COMSOL: Simulation of liquid nitrogen cooling (Help please)

AI Thread Summary
The discussion centers on simulating liquid nitrogen cooling using COMSOL for an InSb sample attached to a cooled copper table. The setup involves parameters like a sample size of 10x10x0.5 mm, a temperature of 300 K, and normal pressure of 1 bar. Key modules utilized include Heat Transfer in Solids, Laminar Flow, and Multiphysics. Challenges arose in calculating heating during cooling, but successful simulations were achieved on a more powerful computer. The conversation highlights the complexities of thermal dynamics in such cooling systems.
Engineer_Kosyakova
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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)
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Good afternoon! Yes, it seems that everything turned out on a more powerful computer.
 

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