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Search: Posts Made By: iloc86
Forum: CFX January 5, 2015, 11:51
Replies: 11
Views: 1,428
Posted By iloc86
im trying this: sx=-100000000 [kg m^-3...

im trying this:

sx=-100000000 [kg m^-3 s^-1]*(Velocity u - 0.2 [m s^-1])
sy= 0 cuz i dont want source in that direction
sz= 0 cuz i dont want source in that direction

C=-1e+08

it take...
Forum: CFX January 5, 2015, 10:37
Replies: 11
Views: 1,428
Posted By iloc86
thanks!!. So if i use the Mom Source Coeff. i...

thanks!!. So if i use the Mom Source Coeff. i define too like in the source entry? Is there a way to calculate that coeffcient intead of just "give" a large number?
thanks for advance
Forum: CFX January 3, 2015, 13:44
Replies: 11
Views: 1,428
Posted By iloc86
thanks for your reply. yes i read that. As far as...

thanks for your reply. yes i read that. As far as i know i can model the pump effect like a momentum source, in CFX its a force/volume ok? thats why the unit are Newton/volume or kg m s^-2 m^-3. the...
Forum: CFX January 2, 2015, 17:11
Replies: 11
Views: 1,428
Posted By iloc86
i cant solve this problem =(, i really dont know...

i cant solve this problem =(, i really dont know how to implement C(v2-v1) momentum source in this model. Any ideas?
Forum: CFX December 29, 2014, 12:44
Replies: 11
Views: 1,428
Posted By iloc86
im trying this in momentum source: ...

im trying this in momentum source:

(massFlow()@in*(Velocity u - (0.0001840130728 [m^3 s^-1] /area()@in) ))/volume()@Subdomain 1
Forum: CFX December 27, 2014, 13:05
Replies: 11
Views: 1,428
Posted By iloc86
i have enter this in momentum source ...

i have enter this in momentum source

(Velocity u - (0.0001840130728 [m^3 s-1] /area()@in) )

but i dont know what to do next
Forum: CFX December 27, 2014, 11:40
Replies: 11
Views: 1,428
Posted By iloc86
I really appreciate your response. I saw that the...

I really appreciate your response. I saw that the momentum is entered as c(v2-v1) but i havent used this kind of approach. i have read too that i have to define a user function. i dont know if its...
Forum: CFX December 26, 2014, 11:09
Replies: 11
Views: 1,428
Posted By iloc86
displacemente pump as a momentum source in CFX

im new in CFD simulation in CFX. Im currently simulating a simple pipe system with one displacemente pump. i have read that with a "source" i can model the effect of a pump. i have issues with...
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