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The Radius of Impeller at Inlet is the radius of the impeller at the inlet of the pump. It is a crucial parameter in centrifugal pump design and analysis, determining the fluid entry characteristics and overall pump performance.
The calculator uses the formula:
Where:
Explanation: This formula calculates the impeller radius at the inlet based on the relationship between tangential velocity and angular velocity in rotational systems.
Details: Accurate calculation of impeller radius is essential for proper pump design, performance optimization, and understanding fluid dynamics within centrifugal pumps. It affects flow characteristics, pressure development, and efficiency.
Tips: Enter tangential velocity in m/s and angular velocity in rad/s. Both values must be positive numbers greater than zero for valid calculation.
Q1: Why is impeller radius important in pump design?
A: Impeller radius directly affects the pump's ability to generate pressure and flow, influencing overall pump performance and efficiency.
Q2: What are typical values for tangential velocity?
A: Tangential velocity values vary depending on pump size and application, typically ranging from 5-50 m/s for most industrial centrifugal pumps.
Q3: How is angular velocity measured?
A: Angular velocity is typically calculated from rotational speed (RPM) using the formula ω = 2πN/60, where N is RPM.
Q4: Can this formula be used for other rotational machinery?
A: Yes, this fundamental relationship applies to various rotational systems including turbines, compressors, and fans.
Q5: What factors affect impeller radius selection?
A: Impeller radius selection depends on required flow rate, pressure head, efficiency targets, and mechanical constraints of the pump design.