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Micro-bubble resistance reduction on a model SES catamaran |
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| Authors: | Robert Latorre Aaron Miller Richard Philips |
| Institution: | a Naval Architecture and Marine Engineering, University of New Orleans, 911 Engineering Building, New Orleans, LA 70148, USA;b Orion Marine Technology, LLC, 2650 Lincoln Ave., Hollywood, FL 33020, USA;c Naval Underwater Warfare Center, Newport, Rhode Island, Building 990/1, Newport, RI 02841, USA |
| Abstract: | The concept of micro-bubble ejection is emerging as an attractive method for viscous drag reduction for high speed craft. Most of the drag reduction literature presents results for micro-bubble ejection above/below horizontal surfaces. Nevertheless, modern high-speed hull forms are slender with vertical surfaces. This paper presents results of model tests with micro-bubble ejection to the vertical sides of a high speed model with a non-wetting coating. The coating yielded drag reduction of 4–6% and micro-bubbles with coating reduced overall drag by 4–11%. The local coefficient of friction with micro-bubbles is analyzed and found comparable to vertical flat plate results of Madavan et al., 1984]. |
| Keywords: | Surface effect ships Drag reduction Micro-bubble drag reduction |
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