UDS diffusivity problem

manar · March 4, 2017, 08:09

Dear Guys
I have a question regarding the UDS diffusivity .

I ran a steady analysis for an electric arc , and used a DEFINE_DIFFUSIVITY(electric conductivity) for a UDS for both fluid and solid and it was working fine . But when I converted to Unsteady analysis it was running but I did not see any diffusion for the UDS for the fluid , the diffusion was defined using data of electrical conductivity dependent on temperature and pressure .

Is there any difference between steady and unsteady analysis regarding the diffusivity ?

manar · March 5, 2017, 04:41

I tried to add unsteady term to the UDS but no change a, I dont know why?

March 4, 2017, 08:09	UDS diffusivity problem	#1
manar New Member manar Join Date: Oct 2016 Posts: 17 Rep Power: 10	Dear Guys I have a question regarding the UDS diffusivity . I ran a steady analysis for an electric arc , and used a DEFINE_DIFFUSIVITY(electric conductivity) for a UDS for both fluid and solid and it was working fine . But when I converted to Unsteady analysis it was running but I did not see any diffusion for the UDS for the fluid , the diffusion was defined using data of electrical conductivity dependent on temperature and pressure . Is there any difference between steady and unsteady analysis regarding the diffusivity ?

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March 5, 2017, 04:41		#2
manar New Member manar Join Date: Oct 2016 Posts: 17 Rep Power: 10	I tried to add unsteady term to the UDS but no change a, I dont know why?