feat: Add single phase viscosity dependency on temperature#4029
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feat: Add single phase viscosity dependency on temperature#4029
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dkachuma
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OmarDuran,
castelletto1,
herve-gross,
jhuang2601 and
rrsettgast
as code owners
dkachuma
added
type: feature
herve-gross
approved these changes
Apr 14, 2026
jhuang2601
approved these changes
Apr 15, 2026
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| For thermal simulations, the model density and viscosity have a temperature dependency | ||
| expressed as a constant thermal expansion coefficient. |
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| For thermal simulations, the model density and viscosity have a temperature dependency | |
| expressed as a constant thermal expansion coefficient. | |
| For thermal simulations, fluid density and viscosity are temperature-dependent, governed by a constant thermal expansion coefficient. |
| for isothermal cases and, | ||
|
|
||
| .. math:: | ||
| \rho(p,T) = \rho_0 e^{c_\rho(p - p_0)} e^{-\beta_\rho (T - T_0)} |
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| \rho(p,T) = \rho_0 e^{c_\rho(p - p_0)} e^{-\beta_\rho (T - T_0)} | |
| \rho(p,T) = \rho_0 e^{c_\rho(p - p_0)} e^{ - \beta_\rho (T - T_0)} |
jhuang2601
approved these changes
Apr 15, 2026
| TestDeck( | ||
| name="thermalViscosity_1d", | ||
| description='Thermal problem with temperature dependent viscosity', | ||
| partitions=((1, 1, 1)), |
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| partitions=((1, 1, 1)), | |
| partitions=((1, 1, 1),), |
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Adds a viscosity thermal expansion coefficient for single phase fluid. This introduces a simple dependency of the viscosity on temperature.
The documentation has been updated to reflect this addition.
Replaces #3951