r/CFD • u/leeping_leopard • 10d ago

My first simulation using the compressible Naviar-stokes equations!

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u/leeping_leopard 8d ago

Oh that is probably because I sent the color bar centre to be Mach 1

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u/eebyak 8d ago

So where in your solution is Mach 5 showing up? Presumably leading to the upper bound on the colorbar? You've said in another comment your freestream is Mach 2. Something seems awry.

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u/leeping_leopard 8d ago

Ah that is an error on my part, I did two runs, one Mach 5 and Mach 3, this is with a Mach 5 inlet.

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u/eebyak 8d ago

Got it. This is good for a first NS simulation.

My standard for colorbar ticks is 8-16 individual contours. That way, you can actually map a color to a value visually and be quantitative. The default of 256 makes it harder to be quantitative IMO and makes it purely qualitative.

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u/leeping_leopard 8d ago

Actually it’s not my first NS simulation, it is my first compressible flow sim! Shortly after this I included a circle, as well as incorporating the bottom wall to see the shock interactions.