ROLL DAMPING OF CIRCULAR CYLINDERS WITH AND WITHOUT APPENDAGES.
Abstract
A research program established to provide scaling laws for roll damping involves testing five circular cylinders ranging from 3 in. to 4 ft in diameter. The report presents the results of experiments conducted on the fourth cylinder in the series, which has a 2-ft diameter and which, like those tested before it, was oscillated freely at zero forward speed. The experiments were carried out with the cylinder suspended vertically in the water both with and without appendages, and with the bare cylinder floating horizontally. In this way, the various components of damping can be isolated. Log decrements and energy loss per cycle for the bare cylinder, as well as energy loss and moment coefficients for the appendaged cylinder, are presented herein. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1969
- Accession Number
- AD0700251
Entities
People
- Alvin Gersten