Virtual mass in stratified fluids

Download
Author
Loveland, Kenneth Wilder
Date
1968-06Advisor
Sarpkaya, T.
Metadata
Show full item recordAbstract
The virtual mass of circular cylinders immersed in a uniformly
stratified nonhomogeneous fluid medium has been investigated both theoretically
and experimentally. The experimental equipment consisted of
a reservoir filled with one inch thick layers of salt water solution.
The density uniformly decreased with elevation (stable stratification).
The fluid motion about the cylinder was provided by the standing waves
created with a plunger. The resulting velocities and accelerations
about the cylinder were harmonic. The theoretical analysis consisted
of the calculation of the inertia coefficient through the evaluation of
the total kinetic energy of the fluid medium. Use was made of the psuedopotential
flow solution for the stratified flow about a circular cylinder.
The results have shown that the inertia coefficient for circular cylinders
immersed in a uniformly stratified media is about 25% larger than that for
a cylinder immersed in an homogeneous medium.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
Related items
Showing items related by title, author, creator and subject.
-
Added mass of a circular cylinder under a free surface
Gosselin, Richard Leon (Monterey, California; Naval Postgraduate School, 1971-12);When a circular cylinder is immersed in a fluid of infinite extent and oscillated in such a manner that drag effects are negligible, it is well known that the closed form solution gives an added mass coefficient of 1.0. ... -
Forces on cylinders oscillating in water
Driscoll, John Robert, Jr. (Monterey, California. Naval Postgraduate School, 1972-12);A circular cylinder immersed in an infinite fluid and oscillated perpendicular to its axis is acted upon by a fluid dynamic force. This force is generally considered to be composed of two components, a drag and an added ... -
Hydrodynamic Loads Induced By Earthquakes
Garrison, C.J.; Berklite, R.B. (1972);When bottom mounted structures of large displacement are immersed in the sea. earthquake induced hydrodynamic loads may become important design factors. Specifically, as the earth oscillates, a bottom mounted structure is ...