How to write udf to read electromagnetic data as the source term load to Fluent

maisui1993 · June 12, 2018, 04:04

Hi:
I have a question,
I want to write udf read electromagnetic data (has Coordinates and variables）as the source term load to Fluent，dose everyone know how to that？

`e` · June 13, 2018, 22:07

First, the electromagnetic data should be imported onto the grid using interpolation and stored in memory with C_UDMI (each cell stores its electromagnetic value). Assuming that this electromagnetic data is constant throughout the simulation, this first step should be applied with a macro such as DEFINE_INIT (run once at initialisation), to avoid repeating calculations and I/O to the data file. Second, the electromagnetic values can be retrieved with C_UDMI within the DEFINE_SOURCE macro.

Further reading: Fluent UDF to interpolate material properties from Temp and Pressure dependent table

June 12, 2018, 04:04	How to write udf to read electromagnetic data as the source term load to Fluent	#1
maisui1993 New Member maisui Join Date: Jun 2018 Posts: 7 Rep Power: 8	Hi: I have a question, I want to write udf read electromagnetic data (has Coordinates and variables）as the source term load to Fluent，dose everyone know how to that？

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June 13, 2018, 22:07		#2
`e` Senior Member Join Date: Mar 2015 Posts: 892 Rep Power: 18	First, the electromagnetic data should be imported onto the grid using interpolation and stored in memory with C_UDMI (each cell stores its electromagnetic value). Assuming that this electromagnetic data is constant throughout the simulation, this first step should be applied with a macro such as DEFINE_INIT (run once at initialisation), to avoid repeating calculations and I/O to the data file. Second, the electromagnetic values can be retrieved with C_UDMI within the DEFINE_SOURCE macro. Further reading: Fluent UDF to interpolate material properties from Temp and Pressure dependent table