How to solve a Poisson's equation in the beginning of each time step

Von_karman · April 5, 2019, 10:18

Hi all.

I need to solve a Poisson's equation with determined coefficients before the solution iterations in the beginning of each time step and then some parameter outputs is to be assigned as the input for main equations (U,V,...).
Is that possible in Ansys Fluent?

Thanks for any attentions.
M. Vonkarman

AlexanderZ · April 8, 2019, 02:06

Ansys Fluent Customization manual
look for DEFINE_ADJUST macro

best regards

Von_karman · April 14, 2019, 04:51

Sure,I will study and assign your recommendation.

Thank you very much.

ronak · July 8, 2019, 03:44

Hi everybody
Do you know how I should fix this error about a define_adjust UDF
'motion_spec' : is not a member of 'tv_cell_struct'
thanks in advance

April 5, 2019, 10:18	How to solve a Poisson's equation in the beginning of each time step	#1
Von_karman New Member Mari vonkarman Join Date: Apr 2019 Posts: 4 Rep Power: 7	Hi all. I need to solve a Poisson's equation with determined coefficients before the solution iterations in the beginning of each time step and then some parameter outputs is to be assigned as the input for main equations (U,V,...). Is that possible in Ansys Fluent? Thanks for any attentions. M. Vonkarman

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April 8, 2019, 02:06		#2
AlexanderZ Senior Member Alexander Join Date: Apr 2013 Posts: 2,363 Rep Power: 34	Ansys Fluent Customization manual look for DEFINE_ADJUST macro best regards

April 14, 2019, 04:51		#3
Von_karman New Member Mari vonkarman Join Date: Apr 2019 Posts: 4 Rep Power: 7	Sure,I will study and assign your recommendation. Thank you very much.

July 8, 2019, 03:44		#4
ronak Member Hanye Azimi Join Date: Oct 2016 Posts: 42 Rep Power: 10	Hi everybody Do you know how I should fix this error about a define_adjust UDF 'motion_spec' : is not a member of 'tv_cell_struct' thanks in advance