Hi All! I'm starting a thermal analysis and trying to figure out convection coefficient values. For a rectangular box, I'm given a thermal conductivity of 25 W/mK, a length of 5m, a width of 2.5m, a depth of .5m, and a thickness of 1m and I'm a little confused on how to find the convection coefficient value. Any help is much appreciated.

Edu ​​​​​​​3DEXPERIENCE ​​​​​​​SIMULIA Simulation ​​​​​​​