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Investigation of marine waterjet inlets during turning maneuvers
| Title: | Investigation of marine waterjet inlets during turning maneuvers. |
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| Name(s): |
Duerr, Phillip S., author von Ellenrieder, Karl, Thesis advisor Florida Atlantic University, Degree grantor College of Engineering and Computer Science Department of Ocean and Mechanical Engineering |
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| Type of Resource: | text | |
| Genre: | Electronic Thesis Or Dissertation | |
| Date Created: | 2015 | |
| Date Issued: | 2015 | |
| Publisher: | Florida Atlantic University | |
| Place of Publication: | Boca Raton, Fla. | |
| Physical Form: | application/pdf | |
| Extent: | 235 p. | |
| Language(s): | English | |
| Summary: | Numerical simulations of waterjet inlets have been conducted in order to understand inlet performance during ship turning maneuvers. During turning maneuvers waterjet systems may experience low efficiency, cavitation, vibration, and noise. This study found that during turns less energy arrived at the waterjet pump relative to operating straight ahead, and that the flow field at the entrance of the waterjet pump exhibited a region of both low pressure and low axial velocity. The primary reason for the change in pump inflow uniformity is due to a streamwise vortex. In oblique inflow the hull boundary layer separates when entering the inlet and wraps up forming the streamwise vortex. These changes in pump inflow during turning maneuvers will result in increased unsteady loading of the pump rotor and early onset of pump rotor cavitation. | |
| Identifier: | FA00004364 (IID) | |
| Degree granted: | Dissertation (Ph.D.)--Florida Atlantic University, 2015. | |
| Collection: | FAU Electronic Theses and Dissertations Collection | |
| Note(s): | Includes bibliography. | |
| Subject(s): |
Fluid dynamics Ships--Hydrodynamics Ships--Maneuverability--Simulation methods Ship handling--Simulation methods Ship propulsion Stability of ships Oceanographic instruments--Evaluation |
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| Held by: | Florida Atlantic University Libraries | |
| Sublocation: | Digital Library | |
| Links: | http://purl.flvc.org/fau/fd/FA00004364 | |
| Persistent Link to This Record: | http://purl.flvc.org/fau/fd/FA00004364 | |
| Use and Reproduction: | Copyright © is held by the author, with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder. | |
| Use and Reproduction: | http://rightsstatements.org/vocab/InC/1.0/ | |
| Host Institution: | FAU | |
| Is Part of Series: | Florida Atlantic University Digital Library Collections. |
