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Centrifugal Pumps in Hydraulic Engineering

Dive into the principles of centrifugal pumps in hydraulic engineering, exploring radial flow, axial flow, impeller design, and efficiency contours for optimal pump selection.

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Centrifugal Pumps in Hydraulic Engineering

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  1. CE 356 Elements of Hydraulic Engineering Dr. Ben R. Hodges University of Texas at Austin Pumps

  2. centrifugal pumps Radial flow centrifugal pumps fluid enters at the central axis, then accelerates perpendicular to the axis

  3. impeller acceleration Spinning the flow adds velocity. Why does the exit diameter slowly increase around the impeller?

  4. axial and mixed flow Axial flow pumps accelerate the flow directly across the axis (i.e. a fan or propeller) Mixed flow are a combination of radial and axial flow

  5. efficiency contours

  6. system curve So the system curve must be a quadratic increase in head loss with increasing discharge jargon

  7. shaft hp impeller diameter System curve efficiency contours Possible operating points selection Pump selection diagram impeller speed

  8. selection Figure 15.15

  9. NPSH How high can a pump suck?

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