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

fengwang · October 24, 2019, 00:17

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.

thunde47 · November 19, 2019, 12:48

Are you using FLOW-3D WELD software?

fengwang · November 19, 2019, 23:06

Quote:

Originally Posted by thunde47

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.

lanran214 · December 5, 2019, 22:22

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)

October 24, 2019, 00:17	how to get the surface normal vector in FLOW-3D	#1
fengwang New Member Join Date: Jan 2019 Posts: 3 Rep Power: 7	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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November 19, 2019, 12:48		#2
thunde47 Senior Member thunde47 Join Date: Dec 2015 Location: India, USA Posts: 133 Blog Entries: 1 Rep Power: 11	Are you using FLOW-3D WELD software?

December 5, 2019, 22:22		#4
lanran214 New Member Zeqi Hu Join Date: Dec 2016 Location: Wuhan City, Hubei Province, China Posts: 9 Rep Power: 10	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)