Compressible flow through Nozzle

[@muhammedahnuf7914]

Great Video, completely understood the basic concepts of compressible flow in a Nozzle!

[@sagarlokhande6484]

Hi sir, The pressure at the end of nozzle decreased by increasing kinetic energy and this steam enters into the turbine. But my question is we require high pressure and high temperature steam at the inlet of turbine. Please clear my this doubt I can't understand this concept please tell me when u will get time

[@Dr.AmitMandal]

Actually the turbine entrance starts from inlet of nozzle....

[@sagarlokhande6484]

@@Dr.AmitMandal ok got it means in rankine cycle isentropic expansion is combination of nozzle and turbine

[@sagarlokhande6484]

Thanks sir

[@dheerajsharma224]

absolutely amazing lecture sir

[@samgorman5731]

Absolutely fantastic explanation, thank you.

[@author_satpreet_singh]

Very good explanation, but please tell why diverging section is longer than converging.

[@AhmedMohamed-pc7du]

thank you very much ,sir. I had so many benefits from this lecture

[@Naturelobe]

In single divergent nozzle, speed will not be converted to Supersonic.. It will reduce velocity.. If I m not wrong.. Plz it sir

[@Dr.AmitMandal]

if at entrance M is greater than 1 speed will increase

[@sayankumarsaha8705]

nice video very easy to understand

[@hakanegne]

Hi, What happens if (A2-A1 = 0) ? I mean area not change. Will flow turn into wave?

[@Dr.AmitMandal]

it is no more a nozzle then

[@hakanegne]

@@Dr.AmitMandal I am interested in behaviour of flow. how will it move ? continue as flow or as wave?

[@Dr.AmitMandal]

as like a fluid flow through a uniform diameter pipe...

[@hakanegne]

@@Dr.AmitMandal in general, in what condition imcompreseble flows turn in to wave? sorry, I ask many quesiton.

[@Dr.AmitMandal]

pulsating disturbances in fluid

[@feelingzhakkaas]

Respected Sir, Very nice and informative lecture video. Thanks

[@haopuhaokip8986]

Wow...I appreciate.....kept up

[@damiangames1204]

Thank you, indian guy on youtube

[@reflxo]

sir steam power plant se numerical class start kjye na please...

[@abhishekverma20]

Sir, great explanation. But how we can find the length of the converging and diverging nozzle. Is there any method to fing the overall length of the nozzle?

[@Dr.AmitMandal]

+Abhishek Verma , nozzle designing concepts are needed . That too an exclusive theory ...

[@mohithota2198]

VERY NICE SIR. PLEASE UPLOAD VIDEO FOR NORMAL AND SHOCK WAVES IN A PIPE OUTLET DURING A COMPRESSIBLE AND INCOMPRESSIBLE FLOW

[@thomascameron683]

What has been shown in this video is incomplete. Point is, what is the gross pressure (static + dynamic pressure) at the exit. In reality, we have seen that whatever may be the velocity at the exit, the flow continues. That means the gross pressure at the exit is always above the atmospheric pressure level. If not, then the flow wouldn't continue. But, in this video, it hasn't proved that the gross pressure at the exit is greater than the atmospheric pressure i.e. pressure at the entry. In short, it has not been proved that the increase in dynamic pressure is more than the fall in static pressure.

[@Dr.AmitMandal]

P2/ P1 is back peessure ratio, it is included in theory...

[@thomascameron683]

@@Dr.AmitMandal I am not talking about back pressure ratio. I am talking about increase in dynamic pressure and decrease in pressure inside the nozzle in case of subsonic flow through a convergent nozzle.

[@Dr.AmitMandal]

Its theory, at exit the pressure has to be less than inlet, this will make it flow. Atmoshere is practical condition.

[@thomascameron683]

@@Dr.AmitMandal You are talking about static pressure only. I am talking about total pressure i.e. static pressure + dynamic pressure. If the gross pressure (static + dynamic) isn't more than atmospheric at the exit, then the flow will stop. That's basic physics.

[@Dr.AmitMandal]

Atmosphere is not present here, it is in space.

[@tushkimania]

Why in converging nozzle exit can can’t be more than 1 Mach?

[@habibcentermec4793]

sir, i want to know the geometry of the nozzle motive pressure at 6 bar, flow at 400 cfm what is the nozzle throat diameter, air inlet dia is 2 inches.. appreciate your to share some info

[@Dr.AmitMandal]

Some more concepts are required ,stagnation pressure temperature etc

[@Indonesia01ian]

Hi everyone, I am sorry, I still don't get the point what really happens if incompressible fluid flow through the CD nozzle? why the density change can affect the acceleration of the compressible fluid thanks

[@Dr.AmitMandal]

This lecture demonstrates compressible flow, the derivations proves mathematically i.e., what happens theoretically, however the physical realization may be difficult. ..

[@shubhamgautam9649]

thanx.. very nicely explained

[@abhishekverma20]

sir then can u share any link regarding this info where i can study about the Dimensions of the nozzle. thanks

[@shrawankumar9030]

Sir please explain supersaturation flow

[@laughonme2369]

fabulous lecture sir

[@akshaydoke987]

It is useful for student. Tanks sir

[@sumeetmore8807]

sir please clear, 1.does velocity directly prop to area?? 2.does velocity inversely prop to pressure?

[@Dr.AmitMandal]

+sumeet more For the case of steady flow through a duct and compressible fluid with subsonic flow the velocity and pressure both are inversly analogous but for supersonic flow , velocity is directly analogous to area while pressure is still inversly analogous to area.

[@sumeetmore8807]

1.sir how about incompressible fluid?eg-water 2.why we are concern about subsonic and supersonic ,does it has any impression on velocity and pressure of fluid while passing through any vent.(may be im asking wrong but its a doubt,sonic itself is used to count speed/velocity) 3.eg-water dam,while the doors are opened divergently the area increases and hence the velocity of water. (i didn't find why we used sonic factor here.) thanks :)

[@Dr.AmitMandal]

+sumeet more for incompressible fluid area decreases then velocity increases and pressure decreases.

[@Dr.AmitMandal]

+sumeet more super and sub are applicable for compressible fluid only..

[@anuragtripathi2225]

in the case of the diverging nozzle, there is an increase in an area then how come there is an increase in velocity.

[@Dr.AmitMandal]

+anurag tripathi , it's appears unrealistic but it's true for compressible flow and proven mathematically with corresponding context.

[@fiftystate1388]

For hot gasses the conversion of heat to kinetic energy accelerates the flow through the divergent section.

[@joevignolor4u949]

@@fiftystate1388 Does any additional acceleration of the flow occur outside of the divergent part of the nozzle? In other words completely outside of the engine.

[@Dr.AmitMandal]

Ideally no

[@joevignolor4u949]

@@Dr.AmitMandal Thanks. I've always suspected that. It means that all of the thrust is created inside of the engine and that all the opening in the back of the engine does is to allow the expended propellants to escape so fresh propellant can enter the chamber to be burned.

[@ajinkyabadhe4886]

P=f/a and in ventury pressure and area decrease but velocity is increase why give me it's answer

[@Dr.AmitMandal]

+ajinkya badhe its particular phenomenon with compressible fluid which is proven mathematically...

[@alternate_lyrics_telugu]

Thank you Amit

[@noisytube5806]

Starting music feel like Nayak nahi khal nayak hu me

[@prsnthkb]

What will happen if there is reverse flow through Venturi Meter

[@Dr.AmitMandal]

Same effect

[@prsnthkb]

@@Dr.AmitMandal Then how the transmitter would know which is forward flow and which is reverse flow

[@Dr.AmitMandal]

Transmitter?

[@prsnthkb]

A differential pressure sensing device to find differential pressure at reduced area and larger area.

[@Dr.AmitMandal]

It doesn't tells the direction, simply shows pressure difference

[@meetmeghani4280]

What if M=1 and M

[@Dr.AmitMandal]

Foe m=1 it will be indeterminate form, you have to apply concepts of limits

[@r.r.8138]

Really helpful

[@shivasmart967]

tq sir

[@habibcentermec4793]

i want the suction to be at 25inhg

[@AnilKumar-wv8ie]

it is it is so useful

[@debasispanda7579]

Excellent

[@ratnadeepbharate5318]

Tq sir

[@sachinsivadas9022]

Flute ki fluid . 😠😠😠

[@ozairiqbalmughal4442]

Baikar