{"id":168643,"date":"2022-04-19T17:14:42","date_gmt":"2022-04-19T17:14:42","guid":{"rendered":"\/forum\/forums\/topic\/joule-heating-in-fluent-external-resistance\/"},"modified":"2022-05-04T15:01:13","modified_gmt":"2022-05-04T15:01:13","slug":"joule-heating-in-fluent-external-resistance","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/joule-heating-in-fluent-external-resistance\/","title":{"rendered":"Joule Heating in Fluent – External Resistance"},"content":{"rendered":"
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– Hello, I need help to stimulate the healing process of a current of air that flows inside a metal pipe.<\/p>\n

– The pipe is heated by external electrical resistance. Heat is generated in the resistance by joule heating, absorbed by the pipe through primary radiation, conducted through the pipe wall, and then transferred to the air stream. Attached you will find a representation of the process.<\/p>\n

-Both the tube and the resistance are insulated by three layers of material to reduce heat leakage to the outside.<\/p>\n

-I can run the simulation in Fluent by specifying a heat flux on the pipe wall or the wall temperature. I also know how to specify the flow of electricity through a resistor in Fluent. However, I am not sure how to generate the mesh and how to define the boundary conditions for this problem.<\/p>\n

Q1A – 1B – 1C) Do I need to mesh the space between the resistor and the pipe? If so, do I need to specify a material for this gap, for example, air? What boundary conditions would be advisable to use for the space in between?<\/p>\n

Q2) When I set up the S2S radiation model, does it consider the internal and external faces of the pipe?<\/p>\n

Q3A – 3B – 3C) What boundary conditions would be recommended for the air flowing through the pipe? Would mass flow input and pressure output be fine, or would it be better to use velocity input and output? If none, what conditions would you recommend?<\/p>\n

Could you help me with this please? \ud83d\ude42<\/p>\n

Thank you.<\/p>\n

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