Have a spinning rotor/impellor with open channels directed radially outward (similiar to a radial vane centrifigal pump with 90 degree straight blades - such as an older automotive heater fan ). The channels have constant area from the inner to outer radius. Realize this isn't a very efficient design but would like to calculate the torque and radial velocity of the fluid leaving the channels. Have tried using the basic equations for turbomachinery but with the pure radial flow (ideal) haven't had much luck. Attached jpg of the layout with dimensions.(adsbygoogle = window.adsbygoogle || []).push({});

Fluid = water

R1 = 1 inch

R2 = 3 inches

RPM = 2400 RPM

Tangential Velocity at R1 = 20.94 feet per sec

Tangential Velocity at R2 = 62.83 feet per sec

Area of each flow channel A1 = .7763 square inches

Thanks for any help.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Torque for a radial vane water pump

Can you offer guidance or do you also need help?

Draft saved
Draft deleted

**Physics Forums | Science Articles, Homework Help, Discussion**