LECTURES ON THE HYDRODYNAMICS OF PUMPS

© Christopher Earls Brennen

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:


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:


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:


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:


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:


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:


LECTURE 7

[1] Radial and Rotordynamic Forces. Definitions.
[2] Experimental Facility.
[3] Radial Forces.
[4 Effect of Cavitation.
[5] Adkins Model
[6] Rotordynamic Forces


Last updated 4/9/04.
Christopher E. Brennen