Define_cg_motion

chek · October 13, 2013, 02:07

Hi guys,

I'm trying to simulate downwards drop of an object at unit acceleration from air into the water. The tricky part is that the acceleration remains the same 1m/s2 even after interacting with the interface. I have no problems hooking the UDF to fluent.(DEFINE_CG_MOTION and DEFINE_SDOFPROPERTIES). However when i tried to preview mesh motion it doesn't move. Is there something wrong with my udf or is that something i have overlooked? Any advice would be greatly appreciated.

Regards,
Chek

Mehran_A · September 7, 2022, 07:55

Hello,
did you activate also dynamic mesh?
Is your moving part falling or is it also not moving as well?
BR

October 13, 2013, 02:07	Define_cg_motion	#1
chek New Member Join Date: Sep 2013 Posts: 2 Rep Power: 0	Hi guys, I'm trying to simulate downwards drop of an object at unit acceleration from air into the water. The tricky part is that the acceleration remains the same 1m/s2 even after interacting with the interface. I have no problems hooking the UDF to fluent.(DEFINE_CG_MOTION and DEFINE_SDOFPROPERTIES). However when i tried to preview mesh motion it doesn't move. Is there something wrong with my udf or is that something i have overlooked? Any advice would be greatly appreciated. Regards, Chek

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September 7, 2022, 07:55		#2
Mehran_A New Member Mehran Join Date: Sep 2022 Posts: 1 Rep Power: 0	Hello, did you activate also dynamic mesh? Is your moving part falling or is it also not moving as well? BR