COMSOL: Simulation of liquid nitrogen cooling (Help please)

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SUMMARY

The discussion focuses on simulating liquid nitrogen cooling using COMSOL, specifically with an InSb sample measuring 10x10x0.5 mm glued to a cooled copper table. The simulation operates at 300 K and 1 bar pressure, utilizing COMSOL modules including Heat Transfer in Solids, Laminar Flow, and Multiphysics (auto). Participants noted challenges in calculating heating during cooling, particularly with a nitrogen dynamic viscosity of 161.4 E-6 (Pa*s). Successful simulations were reported on more powerful computing systems.

PREREQUISITES
  • COMSOL Multiphysics 5.6 or later
  • Understanding of heat transfer principles
  • Familiarity with laminar flow dynamics
  • Knowledge of material properties, specifically for InSb and liquid nitrogen
NEXT STEPS
  • Explore advanced COMSOL features for heat transfer simulations
  • Research the impact of dynamic viscosity on cooling simulations
  • Learn about optimizing COMSOL simulations for high-performance computing
  • Investigate the effects of electron beam heating on materials
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This discussion is beneficial for materials scientists, thermal engineers, and researchers involved in simulation-based cooling processes, particularly those utilizing COMSOL for thermal management applications.

Engineer_Kosyakova
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TL;DR
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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