Compressible Flow - Part 4 of 4 - Choked Flow

[@danielfoley8902]

For anyone watching this, know that the gamma he is referring to is specific heat ratio, not specific weight. Took me a while to figure that out.

[@abinesha5976]

Hey brother I'm your 1000th subscriber... Keep doing what you love to do... You will definitely end up with success

[@jylee6689]

What a fantastic lecture!

[@anshukumarvikal3184]

Sir this was very informative for me in my 4th sem exam and. Thank you

[@lightsituma4693]

Could you please do a video(lecture) on derivation of equations of total pressure change across a normal shock.

[@saman_ml]

Thank you so much sir. It was such a great help to me

[@ThomasHaberkorn]

how to take into account the pressure loss due to friction along a pipe in compressible flow?

[@samuelashworth10]

I checked some calculations for a project and the engineer had an equation that included the pressure drop across a valve. I thought this wasn't right and he refused to document. I've yet to find anything that includes an upstream dp. Any ideas?

[@santoshkulkarni6085]

How to estimate Mach number. In case we don't have fluid velocity as welll

[@samuelashworth10]

mdot = rho*v*A at any point

[@alekseisorokin4723]

It's better to explain what is Normalized mass flow rate on the graph. It's not the same as real mass flow. And this relation works for converging-diverging nozzle only.

[@TodoRadegast]

Thank you! So the myth is busted: mass flow CAN be increased even under choked conditions if the back pressure increases. Velocity stays constant but higher p0 means higher density therefore higher mass flow

[@jump951]

Can these equations be used for compressors?

[@samuelashworth10]

yes, any gas, any situation where there's a contraction

[@elzahmet]

Can you share with us which books you got those formulations from?

[@PeterKayEngineering]

Ahmt aLgz This part of the course, in part, uses Bernard Massey Mechanics of Fluids as a guide.

[@devrajshellagi9843]

How the length of the pipe plays role here?

[@MrThanoskakourhs]

pressure loss due to friction can choke the flow

[@okkomp]

What is gamma?

[@samuelashworth10]

heat capacity ratio, cp/cv ~ 1.4 for air

[@hardhikgurajala9128]

Really good video. But please speak louda.