Learning Forum

[lzhang]

Hi,I've been having issues using the parameter set in Workbench to change boundary conditions in Fluent. I am able to set geometry parameters in Spaceclaim and update design points. However, when I set boundary conditions in Fluent as input parameters, such as inlet velocity or outlet mass flow rate, there is always a warning Input parameter is not used for this simulation. As a result, I can't get updated results for new design points. I can still run the simulation by manually changing the boundary condition in Fluent, but I can't use the parameter set to update several design points automatically.nI've run into this same issue with different projects I built. What is the reason for it? I've noticed that when I update design points, the Fluent window will close. I guess this is normal since before updating there is a prompt saying some opened editors will close. Is there a way to solve it?nThanks for your help!n

[Keyur Kanade]

Can you please upload some images. nCan you that parameter in parameter window in WB? Can you change DP to current DP and run?nPlease search forum and you will find many posts on parameters like following. nCan you please upload some images. nCan you that parameter in parameter window in WB? Can you change DP to current DP and run?nPlease search forum and you will find many posts on parameters like following. nRegards,nKeyurnHow to access Ansys Online Help DocumentnHow to show full resolution imagenGuidelines on the Student CommunitynHow to use Google to search within Ansys Student Communityn

[lzhang]

Hi Keyur,nThanks for your response. I don't think I have a similar issue as the post you shared. A screenshot is attached below. P1 - P6 are geometry parameters in Spaceclaim, and design points can be updated when I change them (DP0, DP4, DP6, DP8, DP9, DP10). P13 is the outlet mass flow rate in Fluent boundary conditions. When I change P13, for example, DP10 and DP11 have the same geometry but different outlet mass flow rate, the design point can still be updated but I don't get new results. There is always the warning (DP 11) Input parameter Outlet_m is not used for this simulation. :dp11 for each design point.nnWhen I was checking my Fluent model for the current design point DP0, I found that the outlet mass flow rate is still a constant, not the parameter that I used. So I changed it to parameter Outlet_m, and when I pressed save I chose use the current setting for future calculation. Then the issue is gone. So I'm guessing that previously when I set the parameter, although it showed up in the parameter set, it was not saved properly? Whenever setting a parameter in Fluent, it must be saved to use for future calculation? Is that the right way to do it?nThanks!nn

[Keyur Kanade]

You got it right. n