Boundary values with entropy filter

Cases
1

Hello everyone,

I tried using solver entropy filter to calculate supersonic flow with shock waves, but strange physical peak values appeared at the inlet boundary.

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I used type = sup-in-fa and type = char-riem-inv methods, but none of them were solved.

Is it a grid problem?

Good wishes.

2

How big are these ‘peak’ values relative to the background?

3

Compared to the environmental background, its magnitude is not very large, about twice that of the background, because the background uses a flow value of 1.0

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Good wishes.

4

What is the initial condition, and what is the condition that you are applying at this boundary?

5

Sorry for my negligence, it should be due to an issue with the initial values. Thank you for your reminder.

Also, I don’t quite understand the meaning of these three variables. How should the minimum values of p and rho be adjusted? Also, etol. Thank you for your suggestion. I am very confused about this.

Does adjusting their values have any impact on capturing shock waves?

6

Can you show the full configuration file for your case?

Regards, Freddie.

7

Thank you for your attention, I understand that my problem is due to an unscientific setting of the initial value, I set the initial value u=0.0, and as time advances the strange spikes near the inlet will be eliminated, but a larger problem has been found, which can be described in detail as seen in one of the new threads I’ve started, thank you for your time.

Regards, Wgbb.

8