Resin Molding and Rheology: Session 9 "Characteristic Equation of Power Law Fluids"
Explanation using diagrams on the constitutive equations of purely viscous fluids, power law models, and comparison of velocity distributions!
In the case of pure viscous fluids, the equation that represents the quantitative relationship between stress and strain rate is called the constitutive equation or rheological equation. For Newtonian fluids, if temperature and pressure are constant, η becomes a constant. Therefore, the relationship between shear rate and shear stress is linear. On the other hand, for materials like plastics that are in a molten state, the relationship becomes nonlinear, and substances with this characteristic are collectively referred to as non-Newtonian fluids. [Contents] ■ Constitutive equations for pure viscous fluids ■ Power law model ■ Comparison of velocity distributions *For detailed content of the column, please refer to the related links. For more information, feel free to contact us.
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