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Peripheral Velocity at Exit Formula:
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Peripheral Velocity at Exit is the speed that a point in the circumference moves per second at the exit section of a turbomachinery system. It represents the tangential velocity of the blade tips at the outlet of the machine.
The calculator uses the peripheral velocity formula:
Where:
Explanation: The formula calculates the linear velocity at the blade tips by converting rotational speed (RPM) to linear velocity using the circumference of the blade diameter.
Details: Peripheral velocity is crucial in turbomachinery design as it affects efficiency, power output, and stress calculations. It helps determine the energy transfer between the fluid and the rotor blades.
Tips: Enter blade diameter at exit in meters and rotational speed in RPM. Both values must be positive numbers greater than zero for accurate calculation.
Q1: Why is peripheral velocity important in turbomachinery?
A: Peripheral velocity determines the kinetic energy of the fluid and affects the efficiency and performance characteristics of the machine.
Q2: What are typical values for peripheral velocity?
A: Values vary by application but typically range from 50-300 m/s for most turbomachinery applications, depending on the specific machine type and design.
Q3: How does blade diameter affect peripheral velocity?
A: Larger blade diameters result in higher peripheral velocities at the same rotational speed, which increases the energy transfer capability.
Q4: What are the limitations of this calculation?
A: This calculation assumes perfect circular motion and doesn't account for factors like blade shape, fluid dynamics, or mechanical stresses.
Q5: Can this formula be used for both pumps and turbines?
A: Yes, the peripheral velocity calculation applies to both pumps and turbines as it's based on fundamental rotational mechanics.