LECTURES ON THE HYDRODYNAMICS OF PUMPS

© Christopher Earls Brennen

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LECTURE 1

[1] Introduction
[2] Specific Speed and Pump Design
[3] Non-cavitating performance
[4] Secondary flows including Prerotation

LECTURE 1, Part 1:

LECTURE 1, Part 2:

LECTURE 1, Part 3:

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LECTURE 2

[1] Introduction: Cavitation Parameters. Cavitation Inception and Scaling.
[2] Cavitation Problems in Turbomachines
[3] Critical Cavitation Numbers
[4] Cavitation guidelines
[5] Types of Cavitation in Pumps

LECTURE 2, Part 1:

LECTURE 2, Part 2:

LECTURE 2, Part 3:

Knapp Cavitation Movie

LECTURE 2, Part 4:

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LECTURE 3

[1] Cavitation Inception in Pumps

[2] Cavitation Damage in Pumps

[3] Cavitation Noise in Pumps

[4] More on Cavitation Damage

LECTURE 3, Part 1:

LECTURE 3, Part 2:

LECTURE 3, Part 3:

LECTURE 3, Part 4:

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LECTURE 4

[1] Cavitation and Pump Performance. Performance Examples.

[2] Inducers. Effects of Solidity, Tip Clearance, Leading Edge Geometry, Thermal Effects.

[3] Cavitating Cascade Analyses. Head Loss Correlations.

LECTURE 4, Part 1:

LECTURE 4, Part 2:

LECTURE 4, Part 3:

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LECTURE 5

[1] Instabilities and Unsteady Flows. Types of Problems. Typical Frequencies.

[2] Rotating Stall & Rotating Cavitation. Surge & Cavitation Surge.

[3] Blade Passage Frequencies. Blade Passage Forces.

[4] Blade Flutter.

[5] Partial Cavitation Oscillation.

LECTURE 5, Part 1:

LECTURE 5, Part 2:

LECTURE 5, Part 3:

LECTURE 5, Part 4:

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LECTURE 6

[1] Unsteady Flows in Turbomachines.

[2] Simple Impedance Analyses of stability (Non-cavitating pumps, compressors).

[3] Methods in the time domain (method of characteristics, waterhammer).

[4] Transfer functions. Transfer functions for simple components. Pump transfer functions.

[5] Measurement of cavitating pump transfer functions.

[6] Modelling cavitating pumps.

LECTURE 6, Part 1:

LECTURE 6, Part 2:

LECTURE 6, Part 3:

LECTURE 6, Part 4:

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LECTURE 7

[1] Radial and Rotordynamic Forces. Definitions.

[2] Experimental Facility.

[3] Radial Forces.

[4 Effect of Cavitation.

[5] Adkins Model

[6] Rotordynamic Forces

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Last updated 4/9/04.

Christopher E. Brennen