What is velocity diagram of turbine?

In turbomachinery, a velocity triangle or a velocity diagram is a triangle representing the various components of velocities of the working fluid in a turbomachine. Velocity triangles may be drawn for both the inlet and outlet sections of any turbomachine.

What is velocity triangles in pump?

Hydraulic designers refer to this as velocity triangles—one at the impeller blade inlet and another at the exit. A velocity triangle has peripheral velocity (U), absolute velocity (V) and relative velocity (W), with the impeller rotating clockwise (see Figure 1).

What is whirl velocity?

The whirl velocity is the tangential component of absolute velocity at the blade inlet and outlet. This component of velocity is responsible for the whirling or rotating of the turbine rotor.

What is velocity compounding?

In velocity-compound staging a set of stationary nozzles is followed by two sets of moving blades with a stationary row of impulse blades between them to redirect the flow. Ideally this allows twice as much power to be extracted than from a single impulse stage for…

What is pump velocity?

The water in centrifugal pump the water moves radially outward at higher velocity and then it rises to a higher level. Therefore, centrifugal pump is also called as velocity pump. Casing of pump restricts the motion of water and it results into pressure build up.

What is whirl velocity in turbine?

What is the relation between pressure and speed in a turbine?

But the general relation between pressure and speed is right: While no energy is added or removed, the sum of pressure energy and kinetic energy of the flow is constant. While both the compressor and the combustor add energy and the turbine removes it again, the nozzle is such a region of constant energy.

What is the purpose of the stator vanes in a compressor?

In fact the point of the stator vanes and turbine nozzles (turbine vanes) is to turn the airflow to give the proper angle of attack on the blades. The velocity drops in the compressor because the flow area doesn’t decrease as quickly as the air density increases, by design.

How do you find the pressure loss across the turbine?

For an existing engine, the pressure loss across the turbine can be determined by the airflow through the nozzle and the throttle setting Tt4, as shown on a separate slide. From the above equation, we can then determine the compressor pressure ratio. Navigation ..

What is the difference between compressor work CW and turbine work?

The compressor work CW equation is given as: Where cp is the specific heat coefficient at constant pressure, gam is the ratio of specific heats, and nc is the compressor efficiency. The turbine work TW equation is given by: where nt is a turbine efficiency factor. Equating and solving for TPR: