[hhan]

Dear Fedor，

Thank you for your reply!

Is the SCHMIDT number here physically dimensionless, or is it an empirical parameter?

[hhan]

Dear Adrian,

This is a custom case i created. I found when i use the very small deltaX, the memory allocation problem occurs. So I want to estimate memory cost in Geometry prepare stage.

Thank you for your reply!

[hhan]

Dear Adrian,

Thank you for reply!

I cheak my vtk output and also can’t get results from vtk file. I don’t know what the problem is.

When i don’t use the force coupling and only couple the velocity between AD and NS lattice, I can get seemly right output gif. Can model errors still occur in this case?

I wonder if it is caused by too little coupled force. Hope you can suggest some solutions.

Hope your reply!

[hhan]

Dear TimBingert,

Thank for your reply!

Could you give me an example, I don’t know where should I use the descriptors::EXTERNAL_FORCE to add buoyancy force, the D3Q19<force>?

[hhan]

Dear Adrian,

Thanks for your reply!

I try to modify bifurcation3d case.

I query the source code, replace the dragforce class with class BuoyancyForce class and change the partrho parameter to the methane density which is close to the real density in the converter.

At the same time, I also used a cube as a simulation domain to simulate the phenomenon of gas diffusion. But the program was running with warnings like undefined data, no data present, and the density heat map of the ad lattice was blank.

I’ve tried several simulations and the dragforce in the example seems to be 1-2 orders of magnitude larger than the BuoyancyForce.

Is this the main reason for the errors in the program? And how can I define my own force in the coupling process?

Please help me solve this problem, thank you!

[hhan]

I want to create a scene in which methane gas leaks into the air, NS lattice transmits the speed to AD lattice, and then transmits the buoyancy calculated by the concentration of AD lattice to NS lattice to complete the whole coupling process. Which coupling method do you think is more suitable for me?

Thank you!

[hhan]

Thank you!
And could please tell me how can i run it? Compiling it in cpu model or modifying the post processor parts in this case is optional?

[Author]

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