[imadzg]

Hello everyone, I trying to find the most suitable solver to run a simulation of 2 gases at different temperatures inside one pipe (one flow of gas A at a high temp, and a sheath flow of gas B at room temp), and see the effect of the temperature on the flow itself becuase of the density differences resulting from the temperature differences. I don't want to simply see how the temperature is changing.
the ultimate goal is to minimize the wall contacts of gas A.
I have basic knowledge in Openfoam, ive only used simplefoam before.

[imadzg]

Originally Posted by imadzg

Hello everyone, I trying to find the most suitable solver to run a simulation of 2 gases at different temperatures inside one pipe (one flow of gas A at a high temp, and a sheath flow of gas B at room temp), and see the effect of the temperature on the flow itself becuase of the density differences resulting from the temperature differences. I don't want to simply see how the temperature is changing.
the ultimate goal is to minimize the wall contacts of gas A.
I have basic knowledge in Openfoam, ive only used simplefoam before.

you can find attached a simple image to explain how my case is

[tomf]

Hi,

Based on your description I guess gas A and gas B have different species as well? In that case I guess you would need to run something with rhoReactingBuoyantFoam to have all physics involved modeled correctly.

Otherwise if it is just a single species but at different temperatures, buoyantSimpleFoam or buoyantPimpleFoam can be used.

Best Regards,
Tom

[Marpole]

You can consider using solver reactingFoam with reaction feature turned off. This allow different species and temperature inlet boundary conditions.