METHOD AND APPARATUS FOR INCREASING THE EFFECTIVENESS AND EFFICIENCY OF MULTIPLE BOUNDARY LAYER CONTROL TECHNIQUES
In an apparatus and method for ejecting an additive for significantly reduci ng the drag of a first fluid moving relative to a wall, a drag-reducing substan ce is conditioned by causing a second fluid (5), which includes the drag-reduci ng substance as a dispersed solid, liquid or gas, to flow throu...
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| creator | MOORE, KENNETH J RYAN, THOMAS D BABENKO, VICTOR V GORBAN, VLADIMIR A |
| description | In an apparatus and method for ejecting an additive for significantly reduci ng the drag of a first fluid moving relative to a wall, a drag-reducing substan ce is conditioned by causing a second fluid (5), which includes the drag-reduci ng substance as a dispersed solid, liquid or gas, to flow through a nozzle (13) . The second fluid is then passed by a vortex chamber (4) prior to ejection of the second fluid into the first fluid via an aperture that includes a Coanda surface (8) on a portion thereof. Additional techniques are also disclosed which increase the effectiveness and efficiency of ejecting a drag-reducing substance into a fluid that is moving relative to a wall, and which thus enable multiple layer to be established withougt the undersirable disruption of the boundary layer and without the rapid diffusion of the additives acros s the boundary layer that occur in prior art ejection techniques. |
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The second fluid is then passed by a vortex chamber (4) prior to ejection of the second fluid into the first fluid via an aperture that includes a Coanda surface (8) on a portion thereof. 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The second fluid is then passed by a vortex chamber (4) prior to ejection of the second fluid into the first fluid via an aperture that includes a Coanda surface (8) on a portion thereof. Additional techniques are also disclosed which increase the effectiveness and efficiency of ejecting a drag-reducing substance into a fluid that is moving relative to a wall, and which thus enable multiple layer to be established withougt the undersirable disruption of the boundary layer and without the rapid diffusion of the additives acros s the boundary layer that occur in prior art ejection techniques.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | EQUIPMENT FOR SHIPPING MARINE PROPULSION OR STEERING PERFORMING OPERATIONS RELATED EQUIPMENT SHIPS OR OTHER WATERBORNE VESSELS TRANSPORTING |
| title | METHOD AND APPARATUS FOR INCREASING THE EFFECTIVENESS AND EFFICIENCY OF MULTIPLE BOUNDARY LAYER CONTROL TECHNIQUES |
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