[KleinMoretti]

Originally Posted by KleinMoretti

I used "cout" on the 5*5 grid of thermal bath example, h is 1 in 8.0.0, which is agreed with my expectation, because the initial field is given by the free stream condition, the pressure at all points on the grid is the same, so h is 1, but why is it close to 0 in rollback?

From the mathematical perspective, I can't find the difference of the pressure sensor calculations between 8.0.0 and rollback.

[CatarinaGarbacz]

where are you printing h in 8.0.0?

could you send me the file where you're printing and indicate the line, please?

[CatarinaGarbacz]

nevermind I just saw you posted the images of the code

[KleinMoretti]

Originally Posted by CatarinaGarbacz

where are you printing h in 8.0.0?

could you send me the file where you're printing and indicate the line, please?

Sure. The "cout" is at line 614 in 8.0.0 and line 191 in rollback.

[KleinMoretti]

Originally Posted by CatarinaGarbacz

where are you printing h in 8.0.0?

could you send me the file where you're printing and indicate the line, please?

I noticed in your article that it took 80 hours to calculate with 40 cores, was this calculation done under the rollback branch? Can you give me an approximate number of steps when it converges?

It took me 7 hours to calculate 200,000 steps in modified 8.0.0, but it looks particularly far away from converging.

[CatarinaGarbacz]

the AUSM implementation in the rollback and 8.0.0 branches are supposed to give different results, as discussed at the start of this thread.

if h_k / sensor variable is the only variable in the whole AUSM implementation that you found to be different between rollback and 8.0.0 branches, then this is the correction that has been made.

at the moment we are not sure which implementation is correct. some experimental cases agree better with one approach, and vice-versa. more detailed work would have to be done to get to the bottom of this issue.

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about code performance, I have no access to that information as those simulations have been performed too long ago. you mentioned the 7h and 200,000 steps, but what is the number of cores? if using the same number of cores as the paper (40 cores), many more hours are needed to reach convergence since in the paper it took around 80h