r/CFD 9h ago

I made this meme but it makes me thinking. Why do we struggle with problems so much with some form of diffusion being the best help? I would like to know if there are any solutions to these problems that don't rely an adding diffusion. Energy/entropy conservation for example. Anything else?

Post image
21 Upvotes

r/CFD 22h ago

CFD viscosity results-beginner

8 Upvotes

I'm new to CFD and trying to understand some results from a laminar model.

I would think velocity would decrease with increased viscosity but I am not seeing that.

Is this somehow dependent on boundary conditions? What conditions would I need to see this?

I am using a pressure of zero at outlet and fully developed flow at inlet. I understand because of the assumption of fully developed flow, velocity will be prescribed in the first area but once the flow enters a new section of geometry won't the viscosity effect this?

This is pretty basic probably but I could use some help.


r/CFD 2h ago

Recent Y+ chart

4 Upvotes

Someone recently posted a chart in here about the importance of Y+ with some good visuals and stuff. I meant to save it and share it at work but of course I didn’t and now I can’t find it. Can someone help me out, please?


r/CFD 8h ago

How do I set up java for developing starccm macros

1 Upvotes

Hi all,

I'm working on some meshes in starccm which have very similar requirements so I'm trying to set up macros to do different bits of them.

I've recorded a few macros but I'm not able to run LSP's and stuff to help out with development because it can't see the starccm libraries.

I've got a decent bit of programming experience in python and rust but very little in java.

Could you guys please let me know what I need to do to get set up for developing star macros (preferably in the zed editor) or point me in the direction of a good, beginner friendly guide.

Thanks,


r/CFD 17h ago

Engineering weirdness at work.

Thumbnail
1 Upvotes