[S1mple]

Hello,

I am a graduate student currently working on a simulation using Hy2Foam. My simulation involves high-speed non-equilibrium flow over a sphere. I have set the wall boundary conditions to non-slip with isothermal non-catalytic.

However, I have observed an unexpected property distributions: the temperature gradient from the first grid layer to the wall is significantly larger than the gradient from the second grid layer to the first. This discrepancy is causing very large value of heat flux when manually calculating the heat flux. The problem is we cannot do the calculations with non-slip wall conditions properly, and the jump is not only in the temperature, but in the velocities too.

It's possible that due to my limited experience, I'm unable to diagnose the problem. I would greatly appreciate any insights or advice you might have.

Thank you for your time.

[Iniesta8]

Originally Posted by S1mple

Hello,

I am a graduate student currently working on a simulation using Hy2Foam. My simulation involves high-speed non-equilibrium flow over a sphere. I have set the wall boundary conditions to non-slip with isothermal non-catalytic.

However, I have observed an unexpected property distributions: the temperature gradient from the first grid layer to the wall is significantly larger than the gradient from the second grid layer to the first. This discrepancy is causing very large value of heat flux when manually calculating the heat flux. The problem is we cannot do the calculations with non-slip wall conditions properly, and the jump is not only in the temperature, but in the velocities too.

It's possible that due to my limited experience, I'm unable to diagnose the problem. I would greatly appreciate any insights or advice you might have.

Thank you for your time.

Hello,
Has this problem been solved? I met some similar problems in simulating inviscid non-equilibrium via hy2Foam, the distribution of Tv and Tt at the wall is very strange. If you have time, we could discuss in details.