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Hydrodynamic forces on prolate ellipsoidal bodies


Stallkamp, John A (1954) Hydrodynamic forces on prolate ellipsoidal bodies. Dissertation (Ph.D.), California Institute of Technology.


The hydrodynamic forces and moment on submerged bodies of prolate ellipsoidal shape are investigated for two dimensional motion. The specific motion consisted of constant relative linear velocity of the fluid and body and small angular oscillation of the body about its geometric center. The average position of the long axis of the body was in the direction of constant linear motion. The components of the lateral force and of the moment proportional to angular position, velocity, and acceleration are measured for motion in water. These reactions are compared with the reactions derived from perfect fluid theory. It is concluded that the force proportional to angular position is the principal real fluid reaction not predicted by the perfect fluid theory. The deviations of the other components from the theoretical values are small.

Item Type:Thesis (Dissertation (Ph.D.))
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Electrical Engineering
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Plesset, Milton S.
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1954
Record Number:CaltechETD:etd-12122003-093537
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4954
Deposited By: Imported from ETD-db
Deposited On:15 Dec 2003
Last Modified:26 Dec 2012 03:13

Thesis Files

PDF (Stallkamp_ja_1954.pdf) - Final Version
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