Ice loads on propellers under extreme operating conditions
Thesis (M.Eng.)--Memorial University of Newfoundland, 2001. Engineering and Applied Science Bibliography: leaves 78-84 The research focus is on ice-class propellers. Methods exist for predicting hydrodynamic and contact ice loads on conventional ice-class propellers under normal operating conditions...
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ftmemorialunivdc:oai:collections.mun.ca:theses4/139919 2023-05-15T17:23:33+02:00 Ice loads on propellers under extreme operating conditions Varma, Gottumukkala Chandrasekhar, 1975- Memorial University of Newfoundland. Faculty of Engineering and Applied Science. 2000 vii, 84 leaves : ill. Image/jpeg; Application/pdf http://collections.mun.ca/cdm/ref/collection/theses4/id/139919 Eng eng Electronic Theses and Dissertations (8.53 MB) -- http://collections.mun.ca/PDFs/theses/Varma_GottumukkalaChandrasekhar.pdf a1522014 http://collections.mun.ca/cdm/ref/collection/theses4/id/139919 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 Ice breaking operations--Simulation methods Propellers Text 2000 ftmemorialunivdc 2015-08-06T19:22:36Z Thesis (M.Eng.)--Memorial University of Newfoundland, 2001. Engineering and Applied Science Bibliography: leaves 78-84 The research focus is on ice-class propellers. Methods exist for predicting hydrodynamic and contact ice loads on conventional ice-class propellers under normal operating conditions in ice. These have been used to develop a preliminary design and analysis procedure for propeller blade strength. The present research aims to extend these ice load predictions to extreme and transient operating conditions. -- To address these extreme conditions, a numerical model was developed using existing empirical results of ice-structure interaction. This model was incorporated into an existing Fortran code for predicting ice loads on propellers under normal operating conditions. The refined code was used to predict loads on a series of propellers under extreme operating conditions such as when the propeller was stopped and the ship is moving and these results were used to check the design procedure. -- To verify the correctness of the numerical model a series of model scale indentation tests were performed at the Institute of Marine Dynamics, using an MTS machine. A propeller blade shaped indentor with a geometry of that of R-Class propeller was used as an indentor to indent against laboratory grown ice. The tests were performed at high speeds. These results are compared with the numerical simulations. Text Newfoundland studies University of Newfoundland Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
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Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
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English |
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Ice breaking operations--Simulation methods Propellers |
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Ice breaking operations--Simulation methods Propellers Varma, Gottumukkala Chandrasekhar, 1975- Ice loads on propellers under extreme operating conditions |
topic_facet |
Ice breaking operations--Simulation methods Propellers |
description |
Thesis (M.Eng.)--Memorial University of Newfoundland, 2001. Engineering and Applied Science Bibliography: leaves 78-84 The research focus is on ice-class propellers. Methods exist for predicting hydrodynamic and contact ice loads on conventional ice-class propellers under normal operating conditions in ice. These have been used to develop a preliminary design and analysis procedure for propeller blade strength. The present research aims to extend these ice load predictions to extreme and transient operating conditions. -- To address these extreme conditions, a numerical model was developed using existing empirical results of ice-structure interaction. This model was incorporated into an existing Fortran code for predicting ice loads on propellers under normal operating conditions. The refined code was used to predict loads on a series of propellers under extreme operating conditions such as when the propeller was stopped and the ship is moving and these results were used to check the design procedure. -- To verify the correctness of the numerical model a series of model scale indentation tests were performed at the Institute of Marine Dynamics, using an MTS machine. A propeller blade shaped indentor with a geometry of that of R-Class propeller was used as an indentor to indent against laboratory grown ice. The tests were performed at high speeds. These results are compared with the numerical simulations. |
author2 |
Memorial University of Newfoundland. Faculty of Engineering and Applied Science. |
format |
Text |
author |
Varma, Gottumukkala Chandrasekhar, 1975- |
author_facet |
Varma, Gottumukkala Chandrasekhar, 1975- |
author_sort |
Varma, Gottumukkala Chandrasekhar, 1975- |
title |
Ice loads on propellers under extreme operating conditions |
title_short |
Ice loads on propellers under extreme operating conditions |
title_full |
Ice loads on propellers under extreme operating conditions |
title_fullStr |
Ice loads on propellers under extreme operating conditions |
title_full_unstemmed |
Ice loads on propellers under extreme operating conditions |
title_sort |
ice loads on propellers under extreme operating conditions |
publishDate |
2000 |
url |
http://collections.mun.ca/cdm/ref/collection/theses4/id/139919 |
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 (8.53 MB) -- http://collections.mun.ca/PDFs/theses/Varma_GottumukkalaChandrasekhar.pdf a1522014 http://collections.mun.ca/cdm/ref/collection/theses4/id/139919 |
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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