FsTech List of Products and Services

"CAESES" is optimization and parametric modeling software used in various fields such as shipbuilding, turbo machinery, aerospace, and automotive. It supports 3D full parametric modeling, model deformation control, checking functions based on various constraints, connections to simulation software, optimization, and result post-processing. Through a parametric optimization approach, it enables better product design. 【Features】 ■ 3D parametric modeling and morphing functions ■ Integration with simulation software ■ Optimization algorithms and data analysis/post-processing modules *For more details, please refer to the PDF document or feel free to contact us.

We will introduce efficient optimization using morphing with "CAESES," which we provide. It is mainly used in the shipbuilding and maritime industry, but the majority of users focus on full parametric modeling. In morphing (partial parametric modeling), the deformation of imported existing geometry is performed. Therefore, only the modified parts of the existing shape are defined by parameters, allowing for the creation of various shapes. 【Previous Morphing Features】 ■ Shift transformations ■ Lackenby shift ■ Free-Foam deformation (FFD) ■ Cartesian shifts ■ Spot transformations *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case of parametric modeling of a stator using CAD and the optimization software "CAESES." Basically, the shape of the stator can be designed with many degrees of freedom, and as long as the new design candidates meet a series of geometric constraints, various types of complex free shapes can be realized. The final CAD model is controlled by a series of parameters for the blades and EWC, most of which are linked to distribution functions of cross-sectional profiles such as camber and thickness, defining radial deformations. 【Manufacturing Constraints for the Stator】 ■ 15 blades ■ Constant maintenance of the blade's axial chord ■ Minimum thickness requirements for the leading edge and trailing edge ■ Thickness and distance of two inner holes for fixing the blades ■ Installation constraints regarding plate dimensions ■ Radius reduction limits for the EWC *For more details, please download the PDF or feel free to contact us.

This article introduces FRIENDSHIP SYSTEMS, the developer of the optimization software CAESES, and their modeling request from MTU Friedrichshafen. MTU Friedrichshafen designs large turbochargers for diesel engines and uses CAESES for the design of engine components such as volutes. Some of their impeller designs are created using NUMECA Autoblade, and these models are exported in ASCII format (.vda). This format essentially includes point data for the profiles of the hub and shroud in the meridional direction, as well as the blade shapes. *For more details, you can view the related links. For further information, please download the PDF or feel free to contact us.*

In gas turbines and steam turbines, the design and optimization of blade cooling structures is a very important issue for designers. The first stage of the turbine can achieve high thermal efficiency as it withstands high temperatures, which opens up infinite possibilities for structural design and fine-tuning to prevent turbine damage under high temperatures and high centrifugal forces. One efficient method to solve this design problem is shape optimization, which involves automatically varying the design parameters of the cooling structure. *For more detailed information, please refer to the related link. For further details, you can download the PDF or feel free to contact us.*

FRIENDSHIP SYSTEMS, the developer of CAESES, has collaborated with MTU and Darmstadt University of Technology to develop a robust and variable turbine wheel geometry for turbochargers. The research, called Project GAMMA ("Efficient Gas Engines for Maritime Applications of the Next Generation"), aims to develop and prepare new technologies and interactions within the system for LNG/natural gas, which serves as fuel for efficient ship propulsion systems. *For more detailed information, please refer to the related links. You can download the PDF for more details or feel free to contact us.*

Centrifugal pumps are commonly used in industrial and household applications because their design, manufacturing, and maintenance are relatively simple. They also have the advantage of being efficient and easily adaptable to various sizes. Students from the Department of Transportation Systems at the Technical University of Berlin implemented the design process of a centrifugal water pump that maximizes the capabilities of CAESES as part of an internship project at FRIENDSHIP SYSTEMS, the developer of CAESES. *For more details, you can view the related links. For further information, please download the PDF or feel free to contact us.*

This time, I will introduce parametric modeling, which is part of the gear pump optimization project. This project began with the customer's request to "optimize the design of the gear pump" and has progressed with a focus on gear modeling techniques, aiming to create a more functional and user-friendly model. *For detailed information, you can view it through the related links. For more details, please download the PDF or feel free to contact us.*

In the end wall section of power generation devices that convert the kinetic energy of fluids, such as turbines and compressors, into rotational motion, a secondary flow known as "cross flow" occurs due to the interaction between adjacent blades. To improve the performance of the device, it is crucial to reduce this cross flow and the resulting flow losses. The end wall contouring introduced here is a shape profile that adds irregularities to the end wall to suppress losses caused by cross flow, and it is modeled parametrically using CAESES. With the addition of these shape features and modeling techniques, it has become possible to modify the hub shape, thereby minimizing undesirable secondary flow losses. *For more detailed information, you can view the related links. For further details, please download the PDF or feel free to contact us.*

Cardiovascular diseases are a leading cause of death worldwide, but recent advances in medical technology are allowing many people suffering from heart conditions and injuries to gain a new lease on life. The ventricular assist devices (VADs) relevant to this case are mechanical circulatory support devices that replace the function of a failing heart by pumping blood from the heart's lower chambers (ventricles) into the aorta. There are various types of VADs, including volume pumps that mimic natural heartbeats and continuous flow pumps for patients without a heartbeat. Other differences include the type of pump, such as centrifugal or axial flow, the placement of the pump, and which ventricle is being assisted (right - RVAD, left - LVAD, or both - BiVAD). *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.*

Ansys CFD tools such as Fluent and CFX receive strong support from engineers for evaluating fluid dynamic behavior in design, along with various options and tools used for mesh creation. These tools provide valuable information and insights regarding the performance to be evaluated. Moreover, they enable automated optimization and design exploration workflows that include CFD. In addition to improving design and shortening development time and design cycles, these tools significantly enhance the development process by increasing information about the impact of various design variables on performance (product behavior) during the initial design phase, where there is a high degree of freedom in decision-making. *For more details, you can view the related links. For more information, please download the PDF or feel free to contact us.*

In the shape optimization of water pumps with shrouded impellers, it is important to have an efficient parametric model with numerous design variables. This time, we will introduce the design/modeling of water pumps, which have many shape variations and a high degree of freedom for fine-tuning. With the optimization software CAESES, equipped with CAD functions, robust parametric models can be flexibly created while incorporating the designer's ideas, and it is utilized in various stages of the design process. *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.*

CAESES has been conducting optimization calculations for various types of valves and has implemented projects in collaboration with various companies. In this context, we would like to introduce one of the newly conducted projects, "Shape Optimization of a Globe Valve." This project was carried out in cooperation with GEMÜ Gebr. Müller Apparatebau, a German valve manufacturer and a global company specializing in aseptic valves, and SimScale, a leading engineering simulation company. *For more detailed information, please refer to the related links. You can download the PDF for more details or feel free to contact us.*

The project being introduced this time is "Aerodynamic Optimization of Wind Turbine Blades." The turbine blades of SUZLON, a wind power company in India, underwent aerodynamic optimization using the optimization software CAESES. The goal of this project is to improve the annual energy production (AEP) of wind power through the optimization of turbine blades. *For more details, you can view the related links. For further information, please feel free to download the PDF or contact us.

The French company Parrot, which specializes in the design and development of drones, uses CAESES for the design of drone propellers. The reason Parrot's engineers, who are experts in the drone market, adopted CAESES is to speed up the design process and provide customers with even more suitable products. Here, we will introduce the benefits and applications of CAESES at Parrot. *For detailed information, you can view the related links. For more details, please download the PDF or feel free to contact us.*

In this case, we will introduce the automatic optimization workflow for axial fan rotor blades developed by CFDSupport, the creator of TCAE, and FRIENDSHIP SYSTEMS, the creator of CAESES. The project began in response to requests from designers and manufacturers who have basic designs for axial fans and wish to improve existing products into more optimal shapes. *For detailed content of the article, you can view it through the related links. For more information, please download the PDF or feel free to contact us.*

This article introduces the research and development of a ventricular assist device conducted by researchers at the Penn State College of Medicine using CAESES and CONVERGE. The goal of this research is to reduce the risk of adverse events such as hemolysis, degradation of von Willebrand factor, and thrombosis while minimizing the size of the pumps used in artificial hearts. To efficiently create a wide range of pump designs, CAESES has parameterized the flow path shape of the pump. *For more detailed information, you can view the related links. For further details, please download the PDF or feel free to contact us.*

At the Technical University of Darmstadt in Germany (Institute of Gas Turbines and Aerospace Propulsion), research was conducted on the automatic optimization of the volute of centrifugal compressors and vane diffusers. This project was carried out in collaboration with NUMECA, a German company, and Kompressorenbau Bannewitz GmbH (KBB), a turbo machinery manufacturer. CAESES was used for shape creation, while NUMECA's products were utilized for mesh model creation and CFD analysis. In CAESES, a parametric model was created that allowed for variations in the cross-sectional shape and area distribution of the volute. For the diffuser, a non-axisymmetric design was implemented, enabling quick shape transformations by varying the misalignment angle, blade twist, chord length, pitch, and rotation through a parametric model. *For more detailed information, please refer to the related links. You can download the PDF for more details or feel free to contact us.*

In this case, we will introduce the shape optimization of gas turbine fixed blades, including end wall contouring, which is a joint project with SIEMENS. An efficient workflow using CAESES can provide significant support for design development. The gas turbine, which is the application in this instance, is a type of internal combustion engine used for driving generators, among other purposes. *For more detailed information, you can view it through the related links. For more details, please download the PDF or feel free to contact us.

In this case, we will introduce the optimization calculations for vertical axis wind turbines. FRIENDSHIP SYSTEMS, the developer of the optimization design system CAESES, investigated the aerodynamic behavior of vertical axis wind turbines using the mesh generation software Pointwise. As a first initiative, FRIENDSHIP SYSTEMS connected the automatic mesh generation by Pointwise with CAESES and executed a method to optimize vertical axis wind turbines in 2D using various tools, including analysis software. *For more details, you can view the related links. For further information, please download the PDF or feel free to contact us.*

The Italian company OMIQ SRL, which sells software, conducted research on an automatic design system using the poppet valve of high-pressure pumps developed by the Danish machinery manufacturer Danfoss. In this case, we will introduce the design system that integrates the CFD solver SimericsMP with CAESES based on the research that was actually conducted. The issue in this case is that the poppet valve exhibits unacceptable unstable behavior during operation. It was found that when the poppet valve attempts to open to its maximum displacement (27.5 mm), the instability of the flow increases, resulting in a decrease in pressure on the poppet valve, ultimately preventing the valve from fully opening (closing to about 6 mm remaining). This unstable phenomenon was verified through unsteady analysis using SimericsMP. *For more detailed information, please refer to the related link. For further details, you can download the PDF or feel free to contact us.*

The turbo pump is an important component in the design of launch rockets for space using liquid fuel. It is a component that supplies the necessary fuel flow to achieve a large thrust while maintaining a high combustion chamber pressure, and it is used in rocket engine supply systems. Due to the need for high-precision performance predictions of turbo pumps for launch rockets, as well as designs based on these predictions, resulting from the significant reduction in total rocket engine weight, the very high rotational speed of the turbo pump, and the specifications of the pump in relation to the degree of depressurization in the liquid fuel storage tank, the goal is to maximize total reliability throughout the operational lifecycle. *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.*

The aerodynamic optimization effects on bicycle wheels can lead to dramatic performance improvements. In cycling, it is known that air resistance is the main cause of losses, with 70% to 90% of total losses in road racing on paved roads attributed to aerodynamic drag. Therefore, improving aerodynamic performance is one of the important factors considered by competitors when purchasing new equipment. The lateral forces exerted by strong crosswinds and the moments around the yaw angle are important when selecting equipment, and users may prefer larger rim shapes due to the significant buffeting effect, leading some to choose shallower wheels. *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.*

Predicting transitional boundary layers under arbitrary conditions in fluid mechanics is a very challenging task. A research group at Karlsruhe Institute of Technology conducted tests for predicting transitional boundary layers considering the effects of pressure gradients, mainstream turbulence, and surface roughness, using CAESES and the open-source OpenFOAM for suitable leading-edge shape optimization. *For more details, you can view the related links. For further information, please download the PDF or feel free to contact us.*

In conventional thermal and nuclear power plants, steam and combustion gases are used as working fluids to drive turbines and generate electricity. In this case, we will introduce a design method for axial flow turbines using supercritical carbon dioxide (sCO2) as the working fluid, which reaches a supercritical state under relatively mild conditions using CAESES. The supercritical state exhibits properties that are intermediate between gas and liquid, and due to its high density and heat capacity, it has the potential to improve cycle efficiency compared to using gases below the critical point. *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.*

The optimization of valve design is one of many optimization targets, and by appropriately automating the design change process using CAESES and analyzing the number of implementation cases generated by the CFD solver, it is possible to significantly shorten the time to commercialization while exploring truly suitable designs under constraints. A valve is a device that opens, closes, or partially obstructs various passages to control, direct, or adjust the flow of fluid. In an open valve, fluid flows from high pressure to low pressure. Typically, the main objective of valve optimization is to adjust the flow rate passing through the valve at a specified pressure loss. This is often expressed as a flow coefficient, which serves as a relative measure of flow efficiency. *For more detailed information, please refer to the related links. For more details, you can download the PDF or feel free to contact us.*

Caterpillar Propulsion has implemented CAESES for the design of propeller blades. When we started on a project basis, the overall idea was to implement it as a workbench that integrates and controls mesh generation and simulation software. At the same time, CAESES needs to provide a fully parametric 3D blade design that allows Caterpillar Propulsion's engineers to reconstruct the definitions of existing blades and profiles, while also requiring high flexibility to try out entirely new designs. *For more details, please refer to the related link. For further information, you can download the PDF or feel free to contact us.*

The design of axial flow fans generally needs to consider not only efficiency but also noise reduction. Reducing noise in axial flow fans is a rather complex and difficult issue when considering details, but there are some simple geometric methods that can lower fan noise in standard blade designs. The parametric modeling and optimization software CAESES provides a modeling toolbox for implementing various types of shapes and methods, automating the generation of blade geometry in simulation-driven optimization loops. This case study introduces improvements in noise levels and overall acoustic characteristics of axial flow fans utilizing CAESES. *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.*

The mixer is a widely used device, and its size and shape vary depending on the working environment. The parametric modeling in CAESES makes it easy to adjust its performance and enables optimization. By modeling in CAESES, structural changes can be adjusted by parameters, allowing for the easy acquisition of mixers suitable for various working environments. *For more detailed information, you can view it through the related links. For more details, please download the PDF or feel free to contact us.*

Centrifugal compressors are compact yet feature a high pressure ratio, and they are widely used in systems in the fields of aircraft and marine vessels. Impeller design is a crucial design aspect of centrifugal compressors and has a significant impact on compressor performance. In this case, we conducted automatic performance optimization using CAESES combined with CFD tools on an existing centrifugal compressor impeller model. *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.*

The blades used in aircraft engines and gas turbines become very hot, so cooling air is supplied to the countless holes on the blade surface through cooling passages provided inside the blades. In conventional design methods, automatic optimization was considered difficult due to the complexity of shapes, robustness of mesh generation, and computation time. However, this case presents an example of fully automated optimization using CAESES. *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.*

When designing high-performance engines in the field of motorsports, it is necessary to pay attention to complex duct shapes, intake manifolds, and other uniquely shaped components. To increase the engine's horsepower, it is essential to find the appropriate shapes for these configurations. For example, advanced designs like high-flow turbo ducts can significantly accelerate the entire process through flexible and variable CAD shapes. By using a series of design variables, shape deformation can be performed through automated optimization strategies, allowing for the minimization or achievement of objective functions (such as pressure loss and desired flow characteristics like uniformity). At the same time, it is important to ensure that these do not violate constraints related to the designated space. *For more detailed information, please refer to the related links. For further inquiries, feel free to download the PDF or contact us.*

Designing engine components for automobiles often involves considering many constraints, making it a challenging task within development design work. One example is the duct located just before the catalytic converter. Due to space constraints, this component is often designed to be bent quite sharply, which makes it difficult to ensure that the flow distribution is sufficiently uniform. In other words, if the flow characteristics of the catalytic converter are poor, there is a possibility that performance will decrease and emissions will increase. In this case, optimization of the duct for the catalytic converter will be performed using CAESES. *For more details, please refer to the related links. For further information, feel free to download the PDF or contact us.*

Using the general-purpose optimization software AIPOD, we will optimize the performance of the water cooling plate for battery packs used in new energy vehicles. Under unsteady low-temperature heating conditions and steady flow resistance conditions, when the minimum temperature of the cross-section rises by 5°C, the temperature difference in the Z-direction of the battery cell's 1/2 cross-section decreases, but the pressure loss in the flow path must be less than 25 kPa. The water cooling plate model used here is created with the parametric modeling software CAESES, and only the flow path area inside the water cooling plate will be the target for optimization, while other components and conditions will remain unchanged. *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.

Using the general-purpose optimization platform AIPOD, we will implement the pin layout optimization for heat sinks used for IGBTs in electric systems of new energy vehicles. Heat sinks are components that receive heat from a heat source and release it to the outside air. For this purpose, it is ideal for them to have a shape that maximizes surface area in accordance with constraints. Therefore, optimizing heat sinks is an important factor for the stable performance of electronic components and their long-term operation. *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.*

At FRIENDSHIP SYSTEMS, the developer of the CAD and optimization software CAESES, automatic optimization calculations were performed based on the shape sensitivity calculated by Adjoint Flow Solvers. The open-source optimization toolkit Dakota, integrated into CAESES, provides optimization methods that can directly accept gradient information obtained by combining shape sensitivity with CAD model parameters as input data. Based on this information, the algorithm selects parameters for design candidates created by CAESES, and calculations are performed using Adjoint Flow Solvers. *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.*

The developer of CAESES, FRIENDSHIP SYSTEMS, previously worked on optimizing F1 rear wings. Since the CFD analysis was based on the entire vehicle, it was necessary to import the entire vehicle geometry into CAESES and replace only the initial shape of the rear wing with a parametric model. This case study introduces the parametric model of the rear wing created using CAESES' special CAD features. *For more details, you can view the related links. For more information, please download the PDF or feel free to contact us.*

In 2015, VW introduced a device called an airflow transformer aimed at improving emissions, which was installed in a significant number of diesel engines on the market. FRIENDSHIP SYSTEMS, the developer of CAESES, found this device interesting as a subject for optimization and conducted modeling and simulation. *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.*

One of the components targeted for optimization in diesel engines is the injector. This component is designed with careful consideration of its orientation and dimensions to ensure that fuel is injected appropriately into the combustion chamber, making it highly refined. In this case, we will introduce a method for rapidly deforming the existing nozzle shape of the fuel injection system. Based on the shape data imported into CAESES in STL format, we will use the morphing function to implement shape deformation on the injector nozzle. *For more detailed information, you can view the related links. For further details, please download the PDF or feel free to contact us.*

The intake port is the final part of the engine's air intake system, connecting the intake manifold to the combustion chamber, and is opened and closed by the intake valve. Intake ports exist in various types of engines, but they have a particularly significant impact on the formation of the air/fuel mixture in gasoline (SI) engines. In diesel engines, the piston bowl also plays a role in this. Furthermore, the shape of the port affects the charge motion, and a favorable vortex shape reduces energy dissipation, influences the amount of air entering the combustion chamber, and an increase in air quantity leads to improved engine performance. In this case, we will introduce the design of the intake port using CAESES and the automatic optimization in collaboration with CFD analysis tools. *For more detailed information, please refer to the related links. For further details, you can download the PDF or feel free to contact us.*

FRIENDSHIP SYSTEMS, the developer of CAESES, has actively supported student racing teams such as FaSTTUBe and the Ryerson Formula Racing Team. Among these, CAESES was utilized for the optimization of the rear wing shape of racing cars in the Formula Student Germany (FSG) contest, which gathers students from all over Germany. This case study will introduce the optimization of the rear wing and its results. *For more detailed information, please refer to the related links. For further inquiries, feel free to download the PDF or contact us.*

The development of advanced automotive systems such as electric vehicles, autonomous driving systems, and safety enhancement systems will significantly increase the number of electronic devices added to the vehicle body, including sensors, radars, and cameras. It is crucial for these devices to function reliably while minimizing exposure to water to prevent damage and corrosion. One effective approach to achieve this is to reduce water splashes on the vehicle's body and underbody. This case study introduces simulation-driven optimization to investigate the impact of tire tread patterns on water splashes. *For more detailed information, please refer to the related links. You can download the PDF for more details or feel free to contact us.*

The optimization calculation software CAESES and the thermal fluid analysis software CONVERGE work together as a collaborative optimization system aimed at shape optimization and investigating the effects of design variables, providing support to engineers in the design and development field. In this article, we will introduce the functions that can be effectively utilized in CAESES when collaborating with CONVERGE, using intake port models and piston models. *For detailed content of the article, please refer to the related links. For more information, feel free to download the PDF or contact us.

In this case study, we conducted optimization regarding the drag and downforce (negative lift generated by a moving vehicle) of a sports car's rear wing. For this optimization, a parametric model of the rear wing was created using CAESES, and the adjoint solutions obtained from a commercial CFD tool were mapped to the design variables. *For more details, you can view the related links. Please feel free to download the PDF or contact us for more information.*

A torque converter for automobiles is a type of fluid coupling used in vehicles equipped with automatic transmissions to transmit rotational force from the engine to the drive shaft. Designers of torque converters work to minimize cavitation within the device and ensure good flow behavior of the transmission oil, aiming to maximize efficiency and torque ratio at high speeds. CAESES enables the modeling of such complex shapes and can build an optimization system that incorporates shape data into analysis software. By connecting CFD analysis software and proprietary CFD codes to CAESES, it analyzes flow behavior for each designed shape during optimization calculations and provides users with the optimal shape based on constraints. *For more detailed information, please refer to the related links. For further details, feel free to download the PDF or contact us.*