topic Re: Can Autodesk CFD be used to simulate wind driven rain? in CFD Forum

Can Autodesk CFD be used to simulate wind driven rain?

Anonymous — Tue, 19 Jan 2016 04:56:58 GMT

I want to simulate an open partially covered bus shelter design which has a louvered facade to keep out the rain but allow wind in for natural ventilation. I need to test the effectiveness of the design. Is it possible to visualise wind and rain in separate coloured vectors in Autodesk CFD?

Re: Can Autodesk CFD be used to simulate wind driven rain?

Jon.Wilde — Tue, 19 Jan 2016 08:17:35 GMT

Wind: Yes - very easily

Rain: Sort of. We could model particle traces as a post processing step, giving them a low coefficient of restitution will make them sort of stick to walls. This is not the same as running with rain drops from the beginning of the analysis, capturing air resistance and surface tension etc. but we have used it before and it worked out pretty well.

Something like this:

Re: Can Autodesk CFD be used to simulate wind driven rain?

Anonymous — Fri, 20 Jan 2017 13:54:11 GMT

hello,can you screenshot how to do this？ I do not know how to change coefficient of restitution，air resistance and surface tension. Thanks a lot

Re: Can Autodesk CFD be used to simulate wind driven rain?

Anonymous — Fri, 20 Jan 2017 13:59:06 GMT

and can you give me an example about rain? e-mail 779738947@qq.com

Re: Can Autodesk CFD be used to simulate wind driven rain?

Anonymous — Fri, 20 Jan 2017 14:27:15 GMT

First, you need to simulate your wind flow. If this is done, you can add particles and edit their mass properties to approximate the "rain". Everything of this is well documented in the help system 😉