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Calculation of the Added Mass and Damping Forces on Supercavitating Bodies

Fine, Neal E. and Uhlman, James S. and Kring, David C. (2001) Calculation of the Added Mass and Damping Forces on Supercavitating Bodies. In: CAV 2001: Fourth International Symposium on Cavitation, June 20-23, 2001, California Institute of Technology, Pasadena, CA USA. (Unpublished)

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A linearized formulation for the unsteady forces experienced by supercavitating bodies is developed in terms of their added mass and damping coefficients. The formulation is general, but is applied here using an axisymmetric base flow. Expressions for the added mass, damping and restoring tensors are derived in a form suitable for incorporation in a numerical "flight" simulation tool for supercavitating vehicles. Disk and conical cavitating bodies are investigated. It is found that the added mass in surge can actually be negative for small values of the reduced frequency. The physical interpretation of this phenomenon is provided.

Item Type:Conference or Workshop Item (Lecture)
Subject Keywords:supercavitating vehicles, unsteady forces, added mass and damping forces
Record Number:CAV2001:sessionB3.006
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Usage Policy:The papers of this symposium proceedings are protected by copyright, retained by the authors. Authors control translation and reproduction rights to these works. However, readers are granted permission for individual, educational, research and non-commercial reproduction, distribution, display and performance of this work in any format. This permission is in addition to rights of reproduction granted under Section 107, 108, and other provisions of the U.S. Copyright Act.
ID Code:69
Deposited By: Imported from CAV2001
Deposited On:30 Apr 2001
Last Modified:03 Oct 2019 22:49

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