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Old   March 22, 2011, 10:53
Question Satellite Imagery In Fluent
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I am trying to read satellite image data into Fluent that is given to me as a .mat file for MATLAB. This data will serve as the initial conditions for a simulation that I would like to run in FLUENT. The spatially dependent data has no functional form, and that is where the problem is. How should I go about reading this data into FLUENT? Somehow I need to know how each grid cell is accessed by fluent so I can assign the correct value to it in the define_init udf.

I have imported spatially dependent initial conditions on other simulations using DEFINE_INIT udf, but these initial conditions had a functional form, so it was straight forward.

Note, I understand one method would be to fit a polynomial of very high degree to the data in Matlab, then use that polynomial as the functional form in the define_init udf, but I'd like to avoid the error caused by the least squares fitting of the data if possible. Also, I'm not sure Matlab's polyfit would do a good job on all of my datasets as they are quite large.

Thanks so much for any help/ideas!
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Old   March 24, 2011, 11:23
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Or...does anyone know if this sort of thing is just not supported in Fluent?
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define_adjust, define_init, fluent, initial conditions, satellite

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