Moving laser beam

gbrajtm · February 3, 2018, 14:34

Hi All,

How to do a CFD analysis of moving laser beam. Please see attachment.
Please provide some hints.

Thanks

cfdstar · February 6, 2018, 14:35

Quote:

Originally Posted by gbrajtm

Hi All,

How to do a CFD analysis of moving laser beam. Please see attachment.
Please provide some hints.

Thanks

Hi,

You need a UDF to prescribe a moving heat source.

Christophe · February 6, 2018, 18:50

I've used a Gaussian distribution function with a time based mean value parameter to simulate heat from DLD (laser welding) in a structural analysis before, where the laser was welding the outside diameter of the back hub of an impeller. Used the width factor to account for laser beam diameter. Perhaps you can set you UDF up in a similar way.

gbrajtm · February 7, 2018, 03:04

Thanks for the reply,

Could you please provide more info on how to build and UDF.
What should be supposed to do after I meshed the model? Please mention the steps and procedure.

Thanks in advance.

February 6, 2018, 18:50		#3
Christophe Member Join Date: Jan 2015 Posts: 62 Rep Power: 12	I've used a Gaussian distribution function with a time based mean value parameter to simulate heat from DLD (laser welding) in a structural analysis before, where the laser was welding the outside diameter of the back hub of an impeller. Used the width factor to account for laser beam diameter. Perhaps you can set you UDF up in a similar way. gbrajtm likes this.

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February 7, 2018, 03:04		#4
gbrajtm Member Dr Gurubasavaraju Join Date: Dec 2014 Location: Bengaluru India Posts: 78 Rep Power: 12	Thanks for the reply, Could you please provide more info on how to build and UDF. What should be supposed to do after I meshed the model? Please mention the steps and procedure. Thanks in advance.