Creating a UDF for heat generation given data points -- CFD Online Discussion Forums

December 5, 2022, 06:09

Creating a UDF for heat generation given data points

amanv

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Aman

Join Date: Dec 2022

Posts: 5

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Hi, I am currently trying to create a UDF for a source term to input into ANSYS FLUENT. I am modeling heat generation within a Li-ion cell and have the current charging profile. The heat generated within the cell is modeled with the equation q = I^2*R where I is current, R is internal resistance and q is the heat generation.

I have this current charging profile which varies over time. The internal resistance value is constant throughout the charging. I would like to know how to write a UDF such that the current changes with time according to this curve (attached image) .

Attached Images

Screenshot_20221205_110515.jpg (103.5 KB, 23 views)

Tags

ansys 2021 r2, fluent - udf, udf and programming

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