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January 16, 2013, 09:23 |
Wall surface reaction, definition issue
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#1 |
New Member
Gerry Boyce
Join Date: Sep 2012
Posts: 6
Rep Power: 14 |
Hi there,
I was wondering if someone could help me with a problem I am having regarding defining a wall surface reaction UDF. I am trying to model platelet transport in blood and platelet interaction with blood vessel walls. I have defined two platelet species (gas species), Resting Platelets (RP) and Activated Platelets (AP). I have a source term for each of the species and I am trying to define a reactive wall flux term that accounts for platelet deposition on the vessel walls. In the DEFINE_SR_REACTION macro, I have defined 2 wall surface reactions - reaction-1 for RP flux to the wall and reaction-2 for AP flux to the wall In the UDF I am returning a reaction rate value in the pointer *rr (kmole/m^2-s) In the Edit Reactions dialogue box (Problem Setup -> Materials -> mixture-template -> Reactions-Edit) I have set the following parameters: reaction-1: Reactant Specie = RP, Stoic. Coeff. = 1, Rate Exponent = 1 Product Specie = RP, Stoic Coeff. = 1, Rate Exponent = 0 reaction-2: Reactant Specie = AP, Stoic Coeff. = 1, Rate Exponent = 1 Product Specie = AP, Stoic Coeff. = 1, Rate Exponent = 0 When I run the model I see no flux of AP or RP to the wall surface and I'm not quite sure what I'm doing wrong. Any help would be greatly appreciated! Thanks! |
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February 22, 2013, 18:59 |
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#2 |
New Member
Tim Maguire
Join Date: Sep 2009
Posts: 19
Rep Power: 17 |
Gerry:
Did you end up finding a solution to this problem? |
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February 23, 2013, 03:09 |
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#3 |
Senior Member
SSL
Join Date: Oct 2012
Posts: 226
Rep Power: 15 |
I have modeled so many combustion problems. What is the problem. He may have not written the UDF correct.
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