Dimensionless Numerical Approaches for the Performance Prediction of Marine Waterjet Propulsion Units
One of the key issues at early design stage of a high-speed craft is the selection and the performance prediction of the propulsion system because at this stage only few information about the vessel are available. The objective of this work is precisely to provide the designer, in the case of waterj...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/2012/321306 |
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| author | Marco Altosole Giovanni Benvenuto Massimo Figari Ugo Campora |
| author_facet | Marco Altosole Giovanni Benvenuto Massimo Figari Ugo Campora |
| author_sort | Marco Altosole |
| collection | DOAJ |
| description | One of the key issues at early design stage of a high-speed craft is the selection and the performance prediction of the propulsion system because at this stage only few information about the vessel are available. The objective of this work is precisely to provide the designer, in the case of waterjet propelled craft, with a simple and reliable calculation tool, able to predict the waterjet working points in design and off-design conditions, allowing to investigate several propulsive options during the ship design process. In the paper two original dimensionless numerical procedures, one referred to jet units for naval applications and the other more suitable for planing boats, are presented. The first procedure is based on a generalized performance map for mixed flow pumps, derived from the analysis of several waterjet pumps by applying similitude principles of the hydraulic machines. The second approach, validated by some comparisons with current waterjet installations, is based on a complete physical approach, from which a set of non-dimensional waterjet characteristics has been drawn by the authors. The presented application examples show the validity and the degree of accuracy of the proposed methodologies for the performance evaluation of waterjet propulsion systems. |
| format | Article |
| id | doaj-art-d76e10cd63454c51b41479956b0dbbcd |
| institution | Kabale University |
| issn | 1023-621X 1542-3034 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-d76e10cd63454c51b41479956b0dbbcd2025-02-03T06:13:12ZengWileyInternational Journal of Rotating Machinery1023-621X1542-30342012-01-01201210.1155/2012/321306321306Dimensionless Numerical Approaches for the Performance Prediction of Marine Waterjet Propulsion UnitsMarco Altosole0Giovanni Benvenuto1Massimo Figari2Ugo Campora3Department of Naval Architecture and Electrical Engineering, University of Genoa, 16145 Genoa, ItalyDepartment of Naval Architecture and Electrical Engineering, University of Genoa, 16145 Genoa, ItalyDepartment of Naval Architecture and Electrical Engineering, University of Genoa, 16145 Genoa, ItalyDepartment of Thermal Machines, Energy and Transport Systems, University of Genoa, 16145 Genoa, ItalyOne of the key issues at early design stage of a high-speed craft is the selection and the performance prediction of the propulsion system because at this stage only few information about the vessel are available. The objective of this work is precisely to provide the designer, in the case of waterjet propelled craft, with a simple and reliable calculation tool, able to predict the waterjet working points in design and off-design conditions, allowing to investigate several propulsive options during the ship design process. In the paper two original dimensionless numerical procedures, one referred to jet units for naval applications and the other more suitable for planing boats, are presented. The first procedure is based on a generalized performance map for mixed flow pumps, derived from the analysis of several waterjet pumps by applying similitude principles of the hydraulic machines. The second approach, validated by some comparisons with current waterjet installations, is based on a complete physical approach, from which a set of non-dimensional waterjet characteristics has been drawn by the authors. The presented application examples show the validity and the degree of accuracy of the proposed methodologies for the performance evaluation of waterjet propulsion systems.http://dx.doi.org/10.1155/2012/321306 |
| spellingShingle | Marco Altosole Giovanni Benvenuto Massimo Figari Ugo Campora Dimensionless Numerical Approaches for the Performance Prediction of Marine Waterjet Propulsion Units International Journal of Rotating Machinery |
| title | Dimensionless Numerical Approaches for the Performance Prediction of Marine Waterjet Propulsion Units |
| title_full | Dimensionless Numerical Approaches for the Performance Prediction of Marine Waterjet Propulsion Units |
| title_fullStr | Dimensionless Numerical Approaches for the Performance Prediction of Marine Waterjet Propulsion Units |
| title_full_unstemmed | Dimensionless Numerical Approaches for the Performance Prediction of Marine Waterjet Propulsion Units |
| title_short | Dimensionless Numerical Approaches for the Performance Prediction of Marine Waterjet Propulsion Units |
| title_sort | dimensionless numerical approaches for the performance prediction of marine waterjet propulsion units |
| url | http://dx.doi.org/10.1155/2012/321306 |
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