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2013•Hangkong jice jishuRequires access

Simulative Control on Inlet Duct Cavitations and Flow Separation of Marine Water-jet Propulsor

Wang Shaozeng

Open publisher page 1 citations

Abstract

We made lots of numerical experiments with some type of foreign inlet duct by means of computational fluid dynamics to lessen the adverse effects on the flow performance from inlet duct cavitations and flow separation of marine water-jet propulsion.By changing inlet velocity ratios(IVRs) and navigational speed,we simulated the flow performance under different working conditions.The design performance atlas of this duct was made on base of the simulation results,getting the boundaries between cavitations area,flow separation area and normal working area.The atlas can help control the cavitations and flow separation of inlet duct,and make inlet duct always in normal working conditions.

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What this paper is about

We made lots of numerical experiments with some type of foreign inlet duct by means of computational fluid dynamics to lessen the adverse effects on the flow performance from inlet duct cavitations and flow separation of marine water-jet propulsion.By changing inlet velocity ratios(IVRs) and navigational speed,we simulated the flow performance under different working conditions.The design performance atlas of this duct was made on base of the simulation results,getting the boundaries between cavitations area,flow separation area and normal working area.The atlas can help control the cavitations and flow separation of inlet duct,and make inlet duct always in normal working conditions.

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Available abstract

We made lots of numerical experiments with some type of foreign inlet duct by means of computational fluid dynamics to lessen the adverse effects on the flow performance from inlet duct cavitations and flow separation of marine water-jet propulsion.By changing inlet velocity ratios(IVRs) and navigational speed,we simulated the flow performance under different working conditions.The design performance atlas of this duct was made on base of the simulation results,getting the boundaries between cavitations area,flow separation area and normal working area.The atlas can help control the cavitations and flow separation of inlet duct,and make inlet duct always in normal working conditions.

Key concepts: Inlet, Duct (anatomy), Marine engineering, Mechanics, Flow separation, Propulsion, Propulsor, Materials science

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