Some issues in inviscid non-equilibrium simulation of hy2Foam

[LDK29]

Hi Vincent, Thanks to you excellent work, we can use hy2Foam to simulate non-equuilibrium flows now. Recently I am using hy2Foam to simulate inviscid flow over a blunted wedge, but I have found some issues:

1. Like problems posted by @sunny7bit, "when I follow the tutorial (https://hystrath.github.io/guides/fleming/cfd/transport/#1-species-shear-viscosity-and-thermal-conductivity) for inviscid simulation, the simulation always gets stuck on the first iteration." Then I set the mu to very small value like 1e-12, the solver can run successfully. But I am still wondering there may be some modifications should be done to fix this problem.
2. The distribution of Tt and Tv at the wall are shown in the figure below, the Tt and Tv don't tend to be close as the flow developed downstream. In theory, the two temperature should finally be equal to each other as the flow developed downstream. So the results calculated by hy2Foam are very strange.

The case files are also attached. @vincentcasseau If you have time please give me some advice to fix these problems. If anyone have suggestions please also contact me. Thank you very much!

BR, LDK M12_bluntwedge.zip

[sunny7bit]

Why don't you try using a fixed temperature wall? I find that many literatures like to use this temperature boundary condition when calculating hypersonic non-equilibrium flow. In fact, the zero gradient temperature wall is really not suitable, because the calculated temperature is too high.

[LDK29]

Why don't you try using a fixed temperature wall? I find that many literatures like to use this temperature boundary condition when calculating hypersonic non-equilibrium flow. In fact, the zero gradient temperature wall is really not suitable, because the calculated temperature is too high.

Because I just want to investigate the non-equilibrium effects in inviscid flow. So the transport properties should be set as zero. There is no heat transfer at the wall. By the way, are you still using hy2Foam now? May be we can contact by email.