The working principle of this turbine

[T C]

TL;DR Summary

Found a video on net and from the video, the working principle that will rotate the turbine can't be understood properly. Want to know how the blades are working.

Found this video on net, but was unable to understand the working principle of the blades. The blades are very much closely packed and that means aerodynamic lift is simply useless here. But, from the video, it seems that the blades are like airfoils. That's why want to know the working principle behind the blades that will rotate the turbine.

 

[Baluncore]

That shows one of the several turbine disk rotors from a gas turbine or a steam turbine. The outer stator blades are not shown.
https://en.wikipedia.org/wiki/Gas_turbine
https://en.wikipedia.org/wiki/Turbojet#Components

 

[T C]

Ok. But, what's the driving principle of this rotor. Is it an impulse type turbine or reaction?

 

[DaveE]

AgentJayZ has some good practical YouTube videos about jet engines that you may like. For example, these:
What makes a Turbine Turn
Compressor Stall

 

[jack action]

The blades are very much closely packed and that means aerodynamic lift is simply useless here. But, from the video, it seems that the blades are like airfoils. That's why want to know the working principle behind the blades that will rotate the turbine.

It might be more helpful to view it as a succession of curved convergent or divergent nozzles that accelerate or decelerate the fluid (depending if you want a turbine or a compressor) rather than a succession of airfoils. Look for velocity triangle.

Example of a "curved divergent nozzle" where velocity goes from ##W_1## to ##W_2##:

The concept of a "curved nozzle" might be clearer on a centrifugal compressor (or turbine when rotating in reversed):

 

[Lnewqban]

Please, see:
https://en.wikipedia.org/wiki/Steam_turbine#Principle_of_operation_and_design

"The law of moment of momentum states that the sum of the moments of external forces acting on a fluid which is temporarily occupying the control volume is equal to the net time change of angular momentum flux through the control volume."

 

[Flyboy]

TL;DR Summary: Found a video on net and from the video, the working principle that will rotate the turbine can't be understood properly. Want to know how the blades are working.

Found this video on net, but was unable to understand the working principle of the blades. The blades are very much closely packed and that means aerodynamic lift is simply useless here. But, from the video, it seems that the blades are like airfoils. That's why want to know the working principle behind the blades that will rotate the turbine.

From what I'm seeing, they're using hybrid blades. Hybrids use impulse blade design closer to the root and reaction blade design closer to the tip.

Impulse blades are like a classic Pelton turbine design, where you're simply redirecting the flow and getting your force from the flow turning. Reaction blades use the turning force and the velocity changes to produce their force. By mixing the two, you get a mix of their best attributes where they're needed most. The strength and starting torque of the impulse blades at the root and the efficiency and light weight of the reaction blades near the tips.