Learning Forum

[veera]

hi gd mrn to every one , i recently i visualized one thing in ansys fluent , actually , when i am running the turbulent model (SA) flow problems , to avoid the temperature limited error and reversed flow errors , i am varied the turbulent intensity in boundary conditions , off course after that its not showed any errors like temperature limited and reversed flow conditions like that , but that results are varied ...., so according to tat , how we can avoid the warning of temperature limited and reversed flow condition for getting converged solution at the same time the results are not varied

[DrAmine]

Via consistent and realistic boundary condition, You can try increasing the temperature limit to something more related to your case.

There is no unique answer to this question but I just recommend using realistic bc.

[veera]

Hi abenhadj , Thank you for your reply

actually in this case i am running with sea level temperature only.

and more over i am comes to know the turbulent intensity is applicable for two equation model , , why not is appropriate for zero equation model

[DrAmine]

zero equation: algebraic model

one or two or more equations: transport equation for the (modified) viscosity or tranport equations to TKE, dissipation or frequency or Reynolds stresses or normal component of the stress.

TI depends on the fluctuation which is set isotropically to square root of 2/3 of TKE. No TKE no intensity.