Hello! I will try to formulate myself as clearly as possible, but english isn't my main language. I'm having trouble solving this problem that should be relatively easy to solve.(adsbygoogle = window.adsbygoogle || []).push({});

Let's say we have a submerged pressure tank, constantly fed with air through a compressor, so it's maintained at a certain pressure P_{tank}. The pressure tank has a hole in it at a known height from the surface, and with a known diameter, so that air will leak out. I want to calculate the volume air flow through the hole [m^{3}/s].

Can I use the formula to conclude if the flow is choked by using

P* = P_{atm}+ rho*g*h

P_{0}= the pressure in the tube (between 1 and 4 bar or something)

gamma = 1,4 for air

If the flow is proven to be choked, does this mean the air speed is 340 m/s through the hole? Can I then just multiply the speed with the area [m^{2}] of the hole to get the volume air flow [m^{3}/s]?

I have tried using this formula but I can't seem to figure out C_{d}.

Thanks in advance!

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# I Air flow through a hole in a submerged pressure tank

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