Development of waterjet testing techniques
Thesis (M.Eng.)--Memorial University of Newfoundland, 1999. Engineering and Applied Science Bibliography: leaves 207-210 In the last decade, waterjet propulsors have found increasing acceptance as an alternative to marine screws and other propeller types. Over the same interval, waterjets have evolv...
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ftmemorialunivdc:oai:collections.mun.ca:theses3/44739 2023-05-15T17:23:32+02:00 Development of waterjet testing techniques Thornhill, Eric, 1974- Memorial University of Newfoundland. Faculty of Engineering and Applied Science 1999 1 v. (various pagings).: ill. Image/jpeg; Application/pdf http://collections.mun.ca/cdm/ref/collection/theses3/id/44739 eng eng Electronic Theses and Dissertations (24.75 MB) -- http://collections.mun.ca/PDFs/theses/Thornhill_Eric.pdf a1395586 http://collections.mun.ca/cdm/ref/collection/theses3/id/44739 The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries Water jets--Testing Underwater propulsion Text Electronic thesis or diisertation 1999 ftmemorialunivdc 2015-08-06T19:17:53Z Thesis (M.Eng.)--Memorial University of Newfoundland, 1999. Engineering and Applied Science Bibliography: leaves 207-210 In the last decade, waterjet propulsors have found increasing acceptance as an alternative to marine screws and other propeller types. Over the same interval, waterjets have evolved from relatively small, simple propulsors for small recreational craft, to sophisticated engineering systems appropriate for high speed and high power vessels. The continuing development of propulsors for such vessels is aided by research for improvement and evaluation of designs. The development of research capabilities in this field is in progress at the Institute for Marine Dynamics. It has been focusing on the ability to perform experiments of vessels and their propulsors at model scale in order to evaluate the performance of the integrated system. -- Model testing techniques for waterjet propelled craft are reviewed and discussed from various relevant works on the subject. Several types of waterjet propulsors as well as some of the common vessel types are identified with respect to the scope of the testing capabilities of the facility. Two phases of experiments were prepared for a model of a 12 metre recreational craft with simple model jets. The phases consisted of bare hull resistance tests and self-propulsion tests. The experiments were intended as trials for testing techniques and instrumentation since results could be compared with the full scale performance of the vessel. One conclusion drawn from the tests was that a model waterjet propulsor would have to be designed and instrumented specifically for such experiments. -- An experimental waterjet propulsor test platform was then developed to accommodate the requirements derived from the initial test phases. The platform housed a model which employed a modular design allowing variation of internal geometry of the waterjet design if required. The platform was fully instrumented to measure flow speeds and pressures in the nozzle and near the impeller. A transparent impeller region was designed to observe possible cavitation phenomena. Thrust, torque, shaft speed and volume flow rate were also measured. The design, instrumentation, test program and test results of the model waterjet and platform are presented and discussed. Text Newfoundland studies University of Newfoundland Memorial University of Newfoundland: Digital Archives Initiative (DAI) Nozzle ENVELOPE(159.100,159.100,-79.917,-79.917) The Nozzle ENVELOPE(159.100,159.100,-79.917,-79.917) |
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Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
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English |
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Water jets--Testing Underwater propulsion |
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Water jets--Testing Underwater propulsion Thornhill, Eric, 1974- Development of waterjet testing techniques |
topic_facet |
Water jets--Testing Underwater propulsion |
description |
Thesis (M.Eng.)--Memorial University of Newfoundland, 1999. Engineering and Applied Science Bibliography: leaves 207-210 In the last decade, waterjet propulsors have found increasing acceptance as an alternative to marine screws and other propeller types. Over the same interval, waterjets have evolved from relatively small, simple propulsors for small recreational craft, to sophisticated engineering systems appropriate for high speed and high power vessels. The continuing development of propulsors for such vessels is aided by research for improvement and evaluation of designs. The development of research capabilities in this field is in progress at the Institute for Marine Dynamics. It has been focusing on the ability to perform experiments of vessels and their propulsors at model scale in order to evaluate the performance of the integrated system. -- Model testing techniques for waterjet propelled craft are reviewed and discussed from various relevant works on the subject. Several types of waterjet propulsors as well as some of the common vessel types are identified with respect to the scope of the testing capabilities of the facility. Two phases of experiments were prepared for a model of a 12 metre recreational craft with simple model jets. The phases consisted of bare hull resistance tests and self-propulsion tests. The experiments were intended as trials for testing techniques and instrumentation since results could be compared with the full scale performance of the vessel. One conclusion drawn from the tests was that a model waterjet propulsor would have to be designed and instrumented specifically for such experiments. -- An experimental waterjet propulsor test platform was then developed to accommodate the requirements derived from the initial test phases. The platform housed a model which employed a modular design allowing variation of internal geometry of the waterjet design if required. The platform was fully instrumented to measure flow speeds and pressures in the nozzle and near the impeller. A transparent impeller region was designed to observe possible cavitation phenomena. Thrust, torque, shaft speed and volume flow rate were also measured. The design, instrumentation, test program and test results of the model waterjet and platform are presented and discussed. |
author2 |
Memorial University of Newfoundland. Faculty of Engineering and Applied Science |
format |
Text |
author |
Thornhill, Eric, 1974- |
author_facet |
Thornhill, Eric, 1974- |
author_sort |
Thornhill, Eric, 1974- |
title |
Development of waterjet testing techniques |
title_short |
Development of waterjet testing techniques |
title_full |
Development of waterjet testing techniques |
title_fullStr |
Development of waterjet testing techniques |
title_full_unstemmed |
Development of waterjet testing techniques |
title_sort |
development of waterjet testing techniques |
publishDate |
1999 |
url |
http://collections.mun.ca/cdm/ref/collection/theses3/id/44739 |
long_lat |
ENVELOPE(159.100,159.100,-79.917,-79.917) ENVELOPE(159.100,159.100,-79.917,-79.917) |
geographic |
Nozzle The Nozzle |
geographic_facet |
Nozzle The Nozzle |
genre |
Newfoundland studies University of Newfoundland |
genre_facet |
Newfoundland studies University of Newfoundland |
op_source |
Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries |
op_relation |
Electronic Theses and Dissertations (24.75 MB) -- http://collections.mun.ca/PDFs/theses/Thornhill_Eric.pdf a1395586 http://collections.mun.ca/cdm/ref/collection/theses3/id/44739 |
op_rights |
The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. |
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1766113072581181440 |