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August 14, 2014, 02:55 |
CFX Particle Injection time
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#1 |
New Member
Thanathat
Join Date: Mar 2009
Posts: 7
Rep Power: 17 |
Dear All
I would like to ask you about the problem about the solid particle injection, my problem is the solid particle inject in rectangular pipe from t=0 [s] to 0.25 [s] and my total simulation time is 2 [s], so what should I do to stop particle injection at t = 0.25 [ s ] because right now every time step are injected the particle. Thank you |
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August 14, 2014, 07:49 |
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#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,871
Rep Power: 144 |
Are the solid particle lagrangian particles?
Can you make the particle flow rate a CEL expression? Something like if(t<0.25[s],10[kg/s],0[kg/s]) |
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August 14, 2014, 11:47 |
CFX Injection error
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#3 |
New Member
Thanathat
Join Date: Mar 2009
Posts: 7
Rep Power: 17 |
Hi ,
Thank you for your information, I try as your suggest but still have the error | ERROR #001100279 has occurred in subroutine ErrAction. | | Message: | | Floating point exception: Invalid number also I try to reduce the time step but still have probles, so, do you have any suggestion Note : I use Lagrange particle model. |
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August 14, 2014, 19:35 |
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#4 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,871
Rep Power: 144 |
It probably does not like a zero flow rate. Try 0.001[kg/s] (or some other small number) rather than zero.
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