Radial Flow Reaction Turbines

Example: The turbine shown below has the following data. r₁ = 5 ft, r₂ = 3 ft, b₁ = b₂ = 1.5,
β₁ = 60^o , β₂ = 30^o , rotates counterclockwise at N = 64 rpm with a flow rate, Q = 500 ft³/sec.
Find the angle, a₁, for schockless entry, the torque, T developed by the turbine, and the power, P,
generated by the turbine.

Strategy: First plot the vector diagrams showing the velocity vectors at the leading edge of the

vane and at the trailing edge of the vane. Then apply the principles of conservation of mass,

conservation of angular momentum, and conservation of energy to solve for the requested

information.

Step 1: Plot vector diagrams showing velocities.

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