Hi, I intend to check some theoretical heat transfer concepts about external forced convenction and to get a basic knowhow of thermal cases setup in SimScale, using a test body (inteds to be a kind of “simplified” vehicle body)

First I tried and got some more ore less “sensible” results of external incompressible flow simulation in steady state (k-e).

I jump into using the “natural convective heat transfer” steady-state case (k-e model), and a BC set as far as I currently understand. I used as referece the BC setup of the HVAC car interior in the library.

Inlet frontal face: fixed speed 1m/s and Tª (5ºC)

Outlet (rear) face: custom, P=0, k-e inletoutlet, all rest gradient=0

Side faces: custom, speed=slip, all rest gradient=0

Body walls: noslip with wall functions, fixed Tª (15ºC)

Numerics: same config as car HVAC example.

Model: default values as car HVAC example.

3000 steps

In about 4minutes ends with error “Maximum number of iterations exceeded.” No convergece plot is done.

Obviously something basic is wrong and I would like to find out before trying again. I am using k-e as I understood it is a more stable model to get convergence.

Thanks for commenting

https://platform.simscale.com/?publiclink=e32f1745-febb-445a-be70-3aa90a07b5b9