[marialhm]

Hi, dear all,

I would like to do simulations of a convergent-divergent nozzle, and some cases would be supersonic. Up to now, I tried rhoCentralFoam, but I found that this solver is only suitable for laminar inviscid fluid, all of the cases from the tutorial are laminar inviscid, and when I added viscosity in the case, it will have errors.

I also tried sonicFoam, but also couldn't get convergence.

Does anyone have the experience of supersonic simulations with viscid fluid using Openfoam? Could you give some suggestions? Which solver should I use? Or what do I need to take into consideration on the setup?

Many thanks.

Regards,

Maria

[jurich]

Hello Maria,

I have used rhoSimpleFoam to do supersonic nozzle simulation. OF version 5 has some changes to the transonic option in pcEqn.H, which made it more robust for my runs. If you look at the tutorial squareBend for rhoSimpleFoam, you will find the settings for transonic flow.

Best regards

[marialhm]

Originally Posted by jurich

Hello Maria,

I have used rhoSimpleFoam to do supersonic nozzle simulation. OF version 5 has some changes to the transonic option in pcEqn.H, which made it more robust for my runs. If you look at the tutorial squareBend for rhoSimpleFoam, you will find the settings for transonic flow.

Best regards

Thanks very much. Although I'm using OF4, I will try this solver.