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Strain Rate in Non-Isothermal Fluid Physics in COMSOL

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March 12, 2025, 12:49	Strain Rate in Non-Isothermal Fluid Physics in COMSOL	#1
aaljlouni New Member Ahmed Alajlouni Join Date: Mar 2025 Posts: 1 Rep Power: 0	Dear COMSOL Community, I am currently working on a Non-Isothermal Fluid Flow simulation in COMSOL, where I prescribe certain velocity field boundary conditions and solve for the velocity field as a function of time. I would like to plot the normal strain rate over time, but I have been unable to find an appropriate expression for the strain rate within this physics module. Does anyone know how to access or define the normal strain rate in Non-Isothermal Fluid Flow? Any suggestions or insights would be greatly appreciated! Best regards, Ahmed

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