INVESTIGATION OF IN-LINE OSCILLATIONS AND THE EFFECTS OF MASS RATIO ON SUBMERGED CYLINDERS IN WATER

Authors
  1. Currie, I.G.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Toronto Univ, Toronto ONT (CAN) Dept of Mechanical Engineering
Abstract
With respect to the problem of in-line oscillations, a mathematical model has been developed which is analogous to that which exists for transverse oscillations. In addition, tests were carried out in which the conditions under which such oscillations exist were investigated. Comparison is made between the theoretical results and the experimentally observed results. The effect of such parameters as Reynolds number, reduced velocity, surface roughness, and free-stream turbulence are considered. The questions related to transverse oscillations are tackled on a purely experimental basis. Cylinders of circular, square, triangular and diamond shaped cross-sections were tested over a range of mass ratios which straddle the value of unity. From these results, the effects of mass ratio and of cylinder shape are deduced and discussed. Where possible, comparisons with previously published results are made.
Date of publication
15 Jun 1984
Number of Pages
211
DSTKIM No
85-00854
CANDIS No
45681
Format(s):
Hardcopy;Originator's fiche received by DSIS

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