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January 10, 2017, 12:00 |
mass flow rate on a patch
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#1 |
New Member
thomas peret
Join Date: Jul 2016
Posts: 6
Rep Power: 10 |
Hi everyone,
I performed a simulation of the flow of a fluid (here water) within a spray gun device with the interFoam solver. I can make a nice video of the evolution of my alpha.water field using paraview but now I'm more interested in getting the outcome mass flow rate with respect to time. I created a patch named "outlet" which denotes the output surface. Basically, what I want is, at each time step, the integral over the surface of (rho*alpha*U.n) where n is the normal vector of the surface, U the velocity, alpha the volumetric rate of water and rho the density of my fluid. I tried to use (without success obviously) the postprocessing tool with those two command lines: 1) postProcess -fields "(alpha.water)" -func "volflowRateSurface(name=outlet)" 2) postProcess -fields "(alpha.water)" -func "flowRatePatch(name=outlet)" Does anybody have a solution or a few advices to solve my problem ? When I looked it up on forums and so on, I saw people getting their "postprocessed" results whilst the computation is running but I didn't make out the explanations at all... Thanks a lot, Thomas |
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April 8, 2020, 02:31 |
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#2 |
Member
Gui Miotto
Join Date: Feb 2020
Posts: 30
Rep Power: 6 |
Last edited by miotto; April 8, 2020 at 17:13. |
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