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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Katsuno, Eduardo Tadashi Dantas, Joao Lucas Dozzi Silva, Emilio Carlos Nelli |
| Copyright Year | 2018 |
| Abstract | This paper aims to perform a numerical analysis of application effects of a superhydrophobic paint by completely coating the blades of a model-scale marine propeller in order to make it a superhydrophobic surface (SHS). First, a two-dimensional study was conducted. Two foils were analyzed for several hydrophobic conditions, varying the slip length. Pressure and skin friction distributions were shown. There is an increase of lift-to-drag ratio with hydrophobicity, but followed by an increase in suction pressure. In three-dimensional case, a propeller was simulated for several hydrophobic conditions, comparing thrust, torque and efficiency coefficients and pressure and friction distribution. Results with propeller showed that an increase in slip length is not always followed by an increase in efficiency, with an apparent efficiency gain limit. For the imposed simulation conditions, from the limit of gain, efficiency no longer increases with hydrophobicity, but its area of low pressure continues to grow. |
| Sponsorship | Ocean, Offshore and Arctic Engineering Division |
| File Format | |
| ISBN | 9780791851272 |
| DOI | 10.1115/OMAE2018-78209 |
| Volume Number | Volume 7B: Ocean Engineering |
| Conference Proceedings | ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering |
| Language | English |
| Publisher Date | 2018-06-17 |
| Publisher Place | Madrid, Spain |
| Access Restriction | Subscribed |
| Subject Keyword | Suction Torque Propellers Blades Hydrophobicity Drag (fluid dynamics) Coatings Pressure Painting Numerical analysis Friction Simulation Skin friction (fluid dynamics) Marine propellers Coating processes Thrust |
| Content Type | Text |
| Resource Type | Article |
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