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32.4.3 Solve/Controls/Limits...

The Solve/Controls/Limits... menu item opens the Solution Limits panel.



Solution Limits Panel


The Solution Limits panel allows you to improve the stability of the solution. See Section  25.12 for details about the items below.

figure

Controls

Minimum Absolute Pressure, Maximum Absolute Pressure   set the limiting minimum and maximum allowable values for absolute pressure.

Minimum Static Temperature, Maximum Static Temperature   set the limiting minimum and maximum allowable values for temperature.

Minimum Turb. Kinetic Energy   sets the limiting minimum value of turbulent kinetic energy ( $k$) in the flow field. This parameter appears when one of the $k$- $\epsilon$ or $k$- $\omega$ models or the RSM is used.

Minimum Turb. Dissipation Rate   sets the limiting minimum value of turbulent dissipation rate ( $\epsilon$) in the flow field. This parameter appears when one of the $k$- $\epsilon$ models or the RSM is used.

Minimum Spec. Dissipation Rate   sets the limiting minimum value of specific dissipation rate ( $\omega$) in the flow field. This parameter appears when one of the $k$- $\omega$ models is used.

Maximum Turb. Viscosity Ratio   sets the limiting maximum allowable value of the ratio of turbulent to laminar viscosity ( $\mu_t/\mu$). The turbulent viscosity is reduced to the necessary value so as not to exceed the maximum allowable viscosity ratio.

This parameter appears for all turbulent flows.

Positivity Rate Limit   sets the limiting value for the rate of reduction of temperature. See Section  25.12 for details.

This item appears only when one of the density-based solvers is used.

Default   sets the fields to their default values, as assigned by FLUENT. After execution, the Default button becomes the Reset button.

Reset   resets the fields to their most recently saved values (e.g., the values before Default was selected). After execution, the Reset button becomes the Default button.


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