I am currently working on a car with a large diffuser. I modeled the diffuser and ran it through simscale and I have also run my car through simscale. I was wondering if there was a way for me to measure the amount of air that enters at the mouth of the diffuser to compare it to the diffuser without the whole car around it.
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Hi @cyrus_costa, thanks for posting on the forum
I think a good start might be to take a look at the following documentation article:
Then generate an area integral to calculate the integral of the velocity variable on a given surface. This would produce the following calculation for the volumetric flow:
\displaystyle \mathrm{\dot{V} = \int_S u \; dA} \tag{1}
Since the units of velocity is [m/s] and area [m²] and their product would generate [m³/s] = Flow rate.
Best,
Igor
From what I understand of the article you linked it is for a specific surface. However the issue with my simulation is that it is a hole of sorts that I am trying to calculate the flow rate through. Does this make sense?
Hey @cyrus_costa,
When you have a flow region with one of its ends being the mouth of the diffuser, the ‘hole’ you refer to would be a surface of the flow region, right?
In that case, you can select this face and apply the area integral, in order to calculate the volumetric flow rate on that face.
Does this help?
Best,
Satvik
The face of the diffuser is part way through the car there for it’s not a face. The inlet is way further forward.
Any update on it?
Like have I found a way to do that???