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-   -   Passive scalar-concentration of species (http://www.cfd-online.com/Forums/star-ccm/102692-passive-scalar-concentration-species.html)

itsme_kit May 31, 2012 12:32

Passive scalar-concentration of species
 
Hi
I want to measure the concentration of species in a pipe flow
How can I make the setting in Star-ccm?
Thanks

abdul099 May 31, 2012 15:48

Activate the passive scalar model, set your boundary conditions, run it, create some reports / probes / scenes / sections / streamlines / whatTheF...Ever. Should be pretty straightforward.

itsme_kit June 3, 2012 13:56

Quote:

Originally Posted by abdul099 (Post 364144)
Activate the passive scalar model, set your boundary conditions, run it, create some reports / probes / scenes / sections / streamlines / whatTheF...Ever. Should be pretty straightforward.

hi abdul099
I have enabled the passiva scalar model
How can I set the varial of interest into concentration of species?
I have no idea exactly how to set it
For the concentration of species, should line, point or area be created? which one is correct for vomule concentration?
Thanks

itsme_kit June 16, 2012 11:50

Quote:

Originally Posted by abdul099 (Post 364144)
Activate the passive scalar model, set your boundary conditions, run it, create some reports / probes / scenes / sections / streamlines / whatTheF...Ever. Should be pretty straightforward.

hi absule
what kind of boundary conditions I need to set?
thanks

abdul099 June 18, 2012 16:13

Pretty hard to answer without any background information about your case. First, what do you want to simulate? Second, what is the main effect you want to evaluate?

itsme_kit June 20, 2012 19:00

Quote:

Originally Posted by abdul099 (Post 367074)
Pretty hard to answer without any background information about your case. First, what do you want to simulate? Second, what is the main effect you want to evaluate?

I'm modeling a gas detection unit which chemical reaction takes places in gas sensor
Chemical reaction is not considered in the simulation
The interest point is focused on improving response stability and achieving faster response
So the concentration of fluid close to gas sensor is important to know
Hopefully my statement is clear
Thanks


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