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An experimental investigation into the performance of a flushwater-jet inlet

Citation

Brandner, PA and Walker, GJ, An experimental investigation into the performance of a flushwater-jet inlet, Journal of Ship Research, 51, (1) pp. 1-21. ISSN 0022-4502 (2007) [Refereed Article]

Abstract

An experimental investigation of the flow within a generic flush type water-jet inlet has been carried out to identify the principal flow features and provide a basis for development of computational fluid dynamics (CFD) models. Tests were performed in a cavitation tunnel with the model inlet fitted to the test section ceiling, and effects of thickening the ingested tunnel wall boundary layer were investigated. The model was fitted with a range of instrumentation to investigate the ramp pressure distribution and boundary layer development, lip incidence, and pump face flow properties. Observations of lip and duct cavitation inception and behavior were also made. The results showed the inlet performance to be generally improved with the ingestion of a thicker boundary layer. The thickened boundary layer significantly reduced ramp boundary layer separation and distortion of flow at the notional pump face. However, a greater range of lip incidence occurred with the thickened boundary layer with consequent greater likelihood of lip separation and cavitation occurrence. Ideal lip incidence and pump face flow uniformity occurred at flow parameters significantly different from those for ideal pump face pressure recovery. Large developed cavities on the inlet lip were observed for a range of conditions typical of conventional high-speed vessel operation.

Item Details

Item Type:Refereed Article
Research Division:Engineering
Research Group:Maritime Engineering
Research Field:Ship and Platform Hydrodynamics
Objective Division:Manufacturing
Objective Group:Transport Equipment
Objective Field:Nautical Equipment (excl. Yachts)
Author:Brandner, PA (Associate Professor Paul Brandner)
Author:Walker, GJ (Professor Greg Walker)
ID Code:51971
Year Published:2007
Web of Science® Times Cited:7
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2007-08-01
Last Modified:2016-01-07
Downloads:0

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