LCT에서 선박용 상호반전 프로펠러 상호작용 특성의 시험적 연구
Experimental Study of the Interaction Characteristics for a Marine CRP in LCT
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초록
In order to develop test and performance analysis techniques for a CRP propulsion, a CRP dynamometer which can be installed inside the model ship was designed and manufactured. The object ship was the 16000TEU container carrier, which has test results for the single propeller. The design concept of the present CRP is that forward & after propellers have the same power ratio and their RPM ratio is 0.75:1. To begin with, we checked the performance of the CRP dynamometer through the calibration and then installed it inside the model ship. After the model ship setup including the design CRP and the rudder in the Large Cavitation Tunnel(LCT), a series of model tests composed of power ratio check, propeller behind wake(PBW) test, cavitation observation and pressure fluctuation tests was conducted. Through the model test and data analysis for CRP, the experimental technique was established and the improved method for CRP design was suggested.
Abstract
In order to develop test and performance analysis techniques for a CRP propulsion, a CRP dynamometer which can be installed inside the model ship was designed and manufactured. The object ship was the 16000TEU container carrier, which has test results for the single propeller. The design concept of the present CRP is that forward & after propellers have the same power ratio and their RPM ratio is 0.75:1. To begin with, we checked the performance of the CRP dynamometer through the calibration and then installed it inside the model ship. After the model ship setup including the design CRP and the rudder in the Large Cavitation Tunnel(LCT), a series of model tests composed of power ratio check, propeller behind wake(PBW) test, cavitation observation and pressure fluctuation tests was conducted. Through the model test and data analysis for CRP, the experimental technique was established and the improved method for CRP design was suggested.
참고문헌 (5)
- 안종우, "대형캐비테이션터널(LCT) 실물 구동펌프 성능시운전", 대한조선학회 논문집, 52(6), pp.428~434 (2015), 대한조선학회
- Kim, K.S., "A propeller cavitation test and PIV measurements method in LCT and MCT of MOERI", IPS'10, pp.6~16 (2010)
- Kim, K.S., "Correlation study on pressure fluctuation measurement at large cavitation tunnel with full-scale data for two container carriers", 12th PRADS (2013)
- 민계식, "Study on the Contra-Rotating Propeller System Design and Full-Scale Performance Prediction Method", International Journal of Naval Architecture and Ocean Engineering, 1(1), pp.29~38 (2009), 대한조선학회
- Van Manen, J.D., "Model tests on contrarotating propellers", 7th Symposium on Naval Hydrodynamics (1968)