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how to get the surface normal vector in FLOW-3D

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Old   October 23, 2019, 23:17
Default how to get the surface normal vector in FLOW-3D
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Hello, everyone.
I am working on the simulation of laser welding by using the ray tracing method to calculate the multiple-reflection in the keyhole, but I don't know how to get the surface normal vector in FLOW-3D. So how can I know the surface normal vector at the location of reflection?
Thanks in advance.
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Old   November 19, 2019, 11:48
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Adwaith Gupta
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Are you using FLOW-3D WELD software?
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Old   November 19, 2019, 22:06
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Quote:
Originally Posted by thunde47 View Post
Are you using FLOW-3D WELD software?
Thanks for your reply. But I don't use FLOW-3D WELD software to simulate laser welding process, actually, I use FLOW-3D v11.2 to perform this simulation.
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Old   December 5, 2019, 21:22
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Zeqi Hu
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You can use the subrutine srfnorm to obtian the normal vector of the free surface, format:
call srfnorm(f,ijk,snormx,snormy,snormz,sar,leneax,0)
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