Does Define_Source macro works for multiphase flow?

asifnafi007 · July 3, 2024, 12:43

Hi Everyone

I am a new member here. I am trying to write an UDF for Eulerian Multiphase flow. The UDF is for a porous media model for water-air flow. I have a rectangular domain which is entirely a porous zone. Water enters from one side of the domain and air enters from the opposite side. I am trying to write an UDF that models the drag force between: air-porous zone(solid), water-porous zone, air-water themselves. so I assume it would be 3 UDFs:

air - water interaction UDF will be hooked to phase interactions
fluids - water interactions UDF will be hooked in cell zone conditions for each phase.

I am trying to find online resources that can help me write the UDFs. Till now, no success. If you have something similar, please share. I greatly appreciate your help. Also, does Define_source macro works for multiphase flow (to define momentum sources for fluid-soild interactions)? Have a great day!

asifnafi007 · July 3, 2024, 13:13

Define_source macro fluent udf

This post may help someone. How do I access to velocity of the other phase?

July 3, 2024, 12:43	Does Define_Source macro works for multiphase flow?	#1
asifnafi007 New Member Anonymous Join Date: Jul 2024 Posts: 2 Rep Power: 0	Hi Everyone I am a new member here. I am trying to write an UDF for Eulerian Multiphase flow. The UDF is for a porous media model for water-air flow. I have a rectangular domain which is entirely a porous zone. Water enters from one side of the domain and air enters from the opposite side. I am trying to write an UDF that models the drag force between: air-porous zone(solid), water-porous zone, air-water themselves. so I assume it would be 3 UDFs: air - water interaction UDF will be hooked to phase interactions fluids - water interactions UDF will be hooked in cell zone conditions for each phase. I am trying to find online resources that can help me write the UDFs. Till now, no success. If you have something similar, please share. I greatly appreciate your help. Also, does Define_source macro works for multiphase flow (to define momentum sources for fluid-soild interactions)? Have a great day!

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July 3, 2024, 13:13		#2
asifnafi007 New Member Anonymous Join Date: Jul 2024 Posts: 2 Rep Power: 0	Define_source macro fluent udf This post may help someone. How do I access to velocity of the other phase?