Waterjet 추진장치의 흡입구유도관 단독성능 시험기법 개발
Development of Stand-alone Performance Test Systemfor an Intake-diffuser of the Waterjet Propulsion
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Abstract
In order to investigate efficiency and flowfield charateristics of the intake-diffuser for the ship waterjet propulsion, new experimental verification technology was set up in the cavitation tunnel. 1-hole and 5-hole pitot tubes were designed and manufactured to measure the pressure and velocity distributions at intake-diffuser entrance and impeller inlet. The calibration of the 5-hole pitot tubes is conducted at the cavitation tunnel. The cavitation inception occurs at the intake lip, and the occurrence position depends on IVR (Inlet Velocity Ratio) condition. The present experimental device will be applied sufficiently for the development of the design and performance improvement technologies.
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