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GIS temperature distribution

Posted 01.04.2016, 01:38 GMT-4 1 Reply

vin Ga
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Hello, ask comsol with thermal and flow fields (laminar flow) how to couple? Specific questions are as follows: gas-insulated GIS enclosed electric device, the current flowing through the heating wire, then thermal diffusion into the surrounding fluid filled sf6 pressure sf6 gas is 0.7MPa, taking into account the gravity of gas, laminar flow. I ask how the two are coupled, and the Joule heat and has a solid laminar flow heat transfer, is a delete, or that reservation?
1 Reply Last Post 27.10.2016, 03:12 GMT-4
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Hello vin Ga

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Majida Wreikat
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Posted: 8 years ago 27.10.2016, 03:12 GMT-4
Hello Vin Ga ;

I worked on a similar model before , unfortunately i cant attach it.
first of all u need to make sure that the material properties you are using (SF6) is a function of Temperature/Pressure.
2nd; start the physics one by one , try first the EC ( electric current ) alone then add the ht ( heat transfer in fluids ) . to couple between ec and ht , use the multiphysics node automatically provided by COMSOL , then add temperature coupling and the heat source which u would like to include .
later add the flow , and add the temperature coupling and flow coupling from the multiphysics node.

i hope this will be helpful.
Hello Vin Ga ; I worked on a similar model before , unfortunately i cant attach it. first of all u need to make sure that the material properties you are using (SF6) is a function of Temperature/Pressure. 2nd; start the physics one by one , try first the EC ( electric current ) alone then add the ht ( heat transfer in fluids ) . to couple between ec and ht , use the multiphysics node automatically provided by COMSOL , then add temperature coupling and the heat source which u would like to include . later add the flow , and add the temperature coupling and flow coupling from the multiphysics node. i hope this will be helpful.

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