CaltechTHESIS
  A Caltech Library Service

Experiments on the upstream wake in magnetofluid dynamics

Citation

Ahlstrom, Harlow G. (1963) Experiments on the upstream wake in magnetofluid dynamics. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-12082005-111323

Abstract

Measurements have been made of the perturbation magnetic field in front of a semi-infinite Rankine body moving parallel to a uniform impressed magnetic field in a conducting fluid. The purpose of these experiments was to investigate the so-called upstream wake effect which has been predicted by theory. It is believed that these are the first experiments in which the upstream wake was observed. Although the wake was found to exist as predicted when the Alfven number is greater than one, its decay behavior was remarkably different from that which was predicted. The solutions for infinite medium predicted that in the wake the perturbations should decay inversely as the distance from the body. However the experiments showed that the perturbations decayed exponentially. It was finally shown that this change in the decay behavior was an effect of the walls and the conducting material surrounding the fluid.

Item Type:Thesis (Dissertation (Ph.D.))
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Aeronautics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Liepmann, Hans Wolfgang
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1963
Record Number:CaltechETD:etd-12082005-111323
Persistent URL:http://resolver.caltech.edu/CaltechETD:etd-12082005-111323
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4858
Collection:CaltechTHESIS
Deposited By: Imported from ETD-db
Deposited On:09 Dec 2005
Last Modified:26 Dec 2012 03:12

Thesis Files

[img]
Preview
PDF (Ahlstrom_hg_1963.pdf) - Final Version
See Usage Policy.

2816Kb

Repository Staff Only: item control page