CaltechTHESIS
  A Caltech Library Service

On the added mass of sphere in a circular cylinder considering real fluid effects

Citation

Mellsen, Stanley Brun (1966) On the added mass of sphere in a circular cylinder considering real fluid effects. Engineer's thesis, California Institute of Technology. http://resolver.caltech.edu/CaltechTHESIS:10052015-161503645

Abstract

An experimental method combined with boundary layer theory is given for evaluating the added mass of a sphere moving along the axis of a circular cylinder filled with water or oil. The real fluid effects are separated from ideal fluid effects.

The experimental method consists essentially of a magnetic steel sphere propelled from rest by an electromagnetic coil in which the current is accurately controlled so that it only supplies force for a short time interval which is within the laminar flow regime of the fluid. The motion of the sphere as a function of time is recorded on single frame photographs using a short-arc multiple flash lamp with accurately controlled time intervals between flashes.

A concept of the effect of boundary layer displacement on the fluid flow around a sphere is introduced to evaluate the real fluid effects on the added mass. Surprisingly accurate agreement between experiment and theory is achieved.

Item Type:Thesis (Engineer's thesis)
Subject Keywords:Mechanical Engineering
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Mechanical Engineering
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Ellis, Albert T. (advisor)
  • Acosta, Allan J. (co-advisor)
Thesis Committee:
  • Wu, Theodore Yao-tsu
  • Housner, George W.
Defense Date:1 January 1966
Funders:
Funding AgencyGrant Number
CaltechUNSPECIFIED
Record Number:CaltechTHESIS:10052015-161503645
Persistent URL:http://resolver.caltech.edu/CaltechTHESIS:10052015-161503645
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:9202
Collection:CaltechTHESIS
Deposited By: Leslie Granillo
Deposited On:06 Oct 2015 17:39
Last Modified:06 Oct 2015 17:39

Thesis Files

[img]
Preview
PDF - Final Version
See Usage Policy.

18Mb

Repository Staff Only: item control page