Learning Forum

[Adrian Ee]

Hi!

So i am trying to conduct a DOE study but i started getting crazy results which i should not even be getting. I managed to narrow down the error to that of the parametric analysis portion. Essentially when i change an input parameter from the tab (example from angle 30 degrees to 40 degrees), i start getting the following results in fluent which is not suppose to be the case .

however when i change the same angle from 30 degrees to 40 degrees in design modeller first, then updating the mesh and finally the fluent, all manually, without changing any other parameters, i get a normal result

 

this is the setup of my workbench

 

Assistance is greatly appreciated. Thanks

[Federico]

Hello Adrian, 

In Workbench, looking at the Properties tab of you Fluent Solution cell, what is the Initialization Method that you are using? The default is Program Controlled, which typically will use the solution from the previous design point and interpolate to the new one. This works well for small changes. However, if there are some topological changes in your mesh, it can cause some issues. See if changing it to Solver Controlled helps in your case

[Federico]

This article shows where to find this:

How to set initial condition (temperature) in Parameter Study for individual Design Points. - Ansys Knowledge