Hi I noticed there was a turbulent viscosity ratio warning when you started the simulation. How did you end up dealing with this - My understanding is that you need a custom UDF wall function is that right?
If Uref is changing over time, you will need to create a function that takes “time” as input argument and return the value of Uref. You can refer to the manual here: www.afs.enea.it/project/neptunius/docs/fluent/html/udf/node243.htm
Hi, see the reference: D.M. Hargreaves, N.G. Wright / J. Wind Eng. Ind. Aerodyn. 95 (2007) 355-369, doi:10.1016/j.jweia.2006.08.002 The abl profile in the video is taken from there.
Hi, the requested udf is here: ua-cam.com/users/redirect?v=GZ0yDo2_gbI&redir_token=bB4q3Z2cuBGOrP1c5AWzo8jGT1Z8MTU3NjI4NDA2MEAxNTc2MTk3NjYw&q=https%3A%2F%2Fdrive.google.com%2Fopen%3Fid%3D1OXes8YG2Z-Q9GUqRdkvz35S_xF8wSoQy&event=video_description
Excellent tutorial. Thanks for sharing.
Very helpful tutorial!
Excellent tutorial.
I am trying to use this tutorial to a case of realizable K-epsilon. How can I change the K equation?
you can check this video: ua-cam.com/video/zsoRbyaAeEg/v-deo.html
Hi I noticed there was a turbulent viscosity ratio warning when you started the simulation. How did you end up dealing with this - My understanding is that you need a custom UDF wall function is that right?
Hi, I didn't use UDF to deal with the turbulent viscosity ratio warning. The ratio goes down to 1e5 after some iterations.
Hi, could you please send me the UDF files for inlet velocity, TDR, TKE separately?
Hi, you can get UDF from here:
drive.google.com/file/d/1OXes8YG2Z-Q9GUqRdkvz35S_xF8wSoQy/view
what if uref is changing over time in a transient simulation? how can we do this in the udf? pls any advice
If Uref is changing over time, you will need to create a function that takes “time” as input argument and return the value of Uref. You can refer to the manual here: www.afs.enea.it/project/neptunius/docs/fluent/html/udf/node243.htm
Hello! This case has experimental data to evaluate the simulations?
Hi, see the reference: D.M. Hargreaves, N.G. Wright / J. Wind Eng. Ind. Aerodyn. 95 (2007) 355-369, doi:10.1016/j.jweia.2006.08.002
The abl profile in the video is taken from there.
@@vincentcfd9806 thank you!
where to find the udf file？
Hi, the requested udf is here:
ua-cam.com/users/redirect?v=GZ0yDo2_gbI&redir_token=bB4q3Z2cuBGOrP1c5AWzo8jGT1Z8MTU3NjI4NDA2MEAxNTc2MTk3NjYw&q=https%3A%2F%2Fdrive.google.com%2Fopen%3Fid%3D1OXes8YG2Z-Q9GUqRdkvz35S_xF8wSoQy&event=video_description