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Cavity Shapes for Circular Disks at Angles of Attack

Waid, R. L. (1957) Cavity Shapes for Circular Disks at Angles of Attack. California Institute of Technology , Pasadena, CA. (Unpublished) http://resolver.caltech.edu/CaltechAUTHORS:20150603-103047421

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Abstract

The shape of the cavity formed in ;·rater by a circular disk at an angle of attack is derived. The empirical evaluation is based on experimental data obtained with air cavities in the Free Surface Water Tunnel. The effects of model size, free stream velocity and cavitation number on cavity shape are presented. The profile shape of the cavity is assumed to be composed of two superposable phenomena: (1) the cavity shape without gravity effects (2) the displacement of the cavity due to gravity An empirical relation is obtained for the buoyant displacement of the cavity centerline. A quasi-elliptical equation is derived which accurately describes the shape of the cavity about its centerline for the disk at zero angle of attack. The equation is modified and applied to the profile shape of a cavity formed by a circular disk at angles of attack up to 30 degrees. All experimental data are presented in both graphic and analytic form.


Item Type:Report or Paper (Technical Report)
Additional Information:Department of the Navy Bureau of Ordnance Contract NOrd-16200 Task 1. Report No. E-73.4.
Group:Hydrodynamics Laboratory
Funders:
Funding AgencyGrant Number
Department of the Navy Bureau of OrdnanceNOrd-16200
Record Number:CaltechAUTHORS:20150603-103047421
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20150603-103047421
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57974
Collection:CaltechAUTHORS
Deposited By: Kristin Buxton
Deposited On:03 Jun 2015 17:49
Last Modified:03 Jun 2015 17:49

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