COMSOL: Simulation of liquid nitrogen cooling (Help please)

[Engineer_Kosyakova]

TL;DR Summary

Simulation of electron beam heating (SEM) of an InSb sample with nitrogen cooling. It is not possible to calculate the heating during cooling in COMSOL. Maybe I'm using the wrong modules for cooling? Without cooling, the heating counts correctly.

The InSb sample (parameters 10x10x0.5 mm) is glued with silver glue to a cooled copper table. Liquid nitrogen passes through the table. While the model is at a temperature of 300 K and at a normal pressure of 1 bar. The sample is affected by a beam of electrons, which causes the surface to heat up. Modules used in COMSOL:
1. Heat transfer in Solids
2. Laminar Flow
3. Multyphysics (auto)
It is not possible to calculate the heating during cooling. Nitrogen Dynamic Viscosity - 161,4 E-6 (Pa*s)

 

[berkeman]

It looks like you have moved on to simulations of heating with COMSOL: https://www.physicsforums.com/threa...ion-from-heated-surfaces-help-please.1051741/

Were you able to get this simulation above for LN2 to work?

 

[Engineer_Kosyakova]

Good afternoon! Yes, it seems that everything turned out on a more powerful computer.