ESTIMATES FOR THE ADDED MASS OF A MULTI-COMPONENT, DEEPLY SUBMERGED VEHICLE. PART I: THEORY AND PROGRAM DESCRIPTION

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Authors
  1. Watt, G.D.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
An analytic method is presented for estimating all the added mass terms of a deeply submerged, submarine like, rigid body. This body may consist of any number of components (hull, sail, fins, etc.). Each component is represented by an ellipsoid with three independently sized principal axes; this allows the added masses to be calculated analytically. Ellipsoid geometry, orientation, and relative location are chosen so that both added masses and added moments of inertia are optimally modelled. Interference effects between the main hull component and an appendage are approximately accounted for by using the flow field around a replacement ellipsoid for the hull to modify the flow at the appendage; interference effects between appendages are neglected. The analysis uses incompressible potential flow theory. It does not account for any circulation in the flow.
Report Number
DREA-TM-88-213 — Technical Memorandum
Date of publication
15 Oct 1988
Number of Pages
62
DSTKIM No
89-00014
CANDIS No
57960
Format(s):
Hardcopy;Originator's fiche received by DSIS;Document Image stored on Optical Disk

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