Learning Forum

[Kyu]

Hello, everyone.

I'm working on the 12 cells serpentine cooling channel battery pack simulation. In the simulation the fluid(liquid-water)'s temperature doesn't change. In the area-weighted average temeprature graph, it keeps same as inlet temperature. And also in the temperature contour it keep same temperature. How can I fixt it.

I setted up the conditions as below.

[Cell Zone Conditions]

Each battery cells are considered as heat source. 

• Heat generation rate 42400 W/m^3 

[Boundary Conditions]

• velocity 0.3 m/s
• temperature 298.15K

Convection

• Heat transfer coefficient 10 W/m^2*K
• Free stream temperature 300K
• Heat generation rate 42400 W/m^3

• Temperature 298.15K

I attached a image of the model and results.

Thank you!

[Rob]

If you're passing heat from the solid to the fluid there shouldn't be any option for a HTC. The yellow faces in the mesh image imply you have an interface zone, so unless you've set that up you're not going to see heat entering the fluid: I'm not sure how you've got heat leavin the solid though. 

[Kyu]

Thank you for your reply Rob. 

Then If I want the heat passes through solid to fluid, what option do I choose? 

And you mean if there are interface zones, Is it impossible to heat entering to the fluid?: The battery cells generate heat and cool by aluminum channel and the inside the liquid water flows. Then, the water temperautre also change. 

[Kyu]

Thank you for your reply Rob. 

Then If I want the heat passes through solid to fluid, what option do I choose? 

And you mean if there are interface zones, Is it impossible to heat entering to the fluid?: The battery cells generate heat and cool by aluminum channel and the inside the liquid water flows. Then, the water temperautre also change. 

 

[Rob]

You can have a solid-solid interface but the better option would be to connect the zones. Look at share topology in SpaceClaim or Discovery (depending on where you built the geometry).