topic Re: Anyone know how to simulat biphasic fluid Air-H2 in CFD Forum

Anyone know how to simulat biphasic fluid Air-H2

pedro.castro104 — Thu, 23 Mar 2023 12:43:06 GMT

I want to simulate a biphasic situation but I do not know how to do it. If anyone know something i thank help.

Re: Anyone know how to simulat biphasic fluid Air-H2

karol.suchon — Thu, 23 Mar 2023 12:57:34 GMT

Hello Pedro, could you tell me more details about what you mean by biphase? It is a mixture of gas H2 and Air or some of the gas are in a liquid state?
BR
Karol

Re: Anyone know how to simulat biphasic fluid Air-H2

pedro.castro104 — Thu, 23 Mar 2023 13:07:15 GMT

Yes i want to simulate the mixt of H2 and Air in gas state to show how to behaven. But when i try i have to assing a concrete gas at each part of the model. And if i assign air at the volumen of mixt i do not know if it is proper

Re: Anyone know how to simulat biphasic fluid Air-H2

karol.suchon — Thu, 23 Mar 2023 13:28:28 GMT

You are looking for scalar mixing.
Look into the article and if you will have a question, let me know.
BR
Karol

Re: Anyone know how to simulat biphasic fluid Air-H2

pedro.castro104 — Mon, 27 Mar 2023 12:39:54 GMT

Hello, good afternoon

When I try simulat appear that

Do you know how to solve?

Re: Anyone know how to simulat biphasic fluid Air-H2

karol.suchon — Mon, 27 Mar 2023 13:22:58 GMT

Yep, you should first create the custom material where density and thermal conductivity depends on the scalar value and next apply it to all fluid material parts.
BR
Karol

Re: Anyone know how to simulat biphasic fluid Air-H2

pedro.castro104 — Mon, 27 Mar 2023 13:27:54 GMT

OK.

But all the fluid material must be the same. Is it not possible to simulate with to diferent fluids to see the interaction between the fluids?

Re: Anyone know how to simulat biphasic fluid Air-H2

karol.suchon — Mon, 27 Mar 2023 13:30:41 GMT

The scalar parameter will track which of the fluid is the volume, which will allow also the mixing of the gases.

So scalar 1 means that the cell volume is 100% of 1 fluid, and 0 is 100% of the second fluid.
BR
Karol

Re: Anyone know how to simulat biphasic fluid Air-H2

pedro.castro104 — Mon, 17 Apr 2023 10:18:52 GMT

Thank you varey much. Taht information has been so useful

Another question

Is possible do parametric analysis in CFD autodesk?