CAJ | 학술논문

为解决某散货船螺旋桨模型空泡试验中发现的桨一船联体涡空泡,以及由此而引起的船体强烈振动,文中通过试验进行了涡流发生器控制桨一船联体涡空泡的应用研究.研究结果表明:船体周围的流动是造成桨一船联体涡空泡的主要原因,通过改变桨的设计不能根本解决问题;通过安装适当的涡流发生器能够成功抑制桨一船联体涡空泡的产生,并使螺旋桨空泡诱导的船体脉动压力减小1/2～1/3左右.
위해결모산화선라선장모형공포시험중발현적장일선련체와공포,이급유차이인기적선체강렬진동,문중통과시험진행료와류발생기공제장일선련체와공포적응용연구.연구결과표명:선체주위적류동시조성장일선련체와공포적주요원인,통과개변장적설계불능근본해결문제;통과안장괄당적와류발생기능구성공억제장일선련체와공포적산생,병사라선장공포유도적선체맥동압력감소1/2～1/3좌우.
During the propeller model cavitation test for a bulk carrier, the severe propeller-hull-vortex (PHV) cavitation was observed and the pressure fluctuations induced by the propeller cavita-tion were much higher than permitted.The application of vortex generator (VG) to eliminate this PHV cavitation is investigated experimentally in this paper.The results show that it is very successful to apply VGs to control PHV and the pressure fluctuations can be reduced by nearly 1/2-1/3.The pri-mary CFD results of the flow around the ship stem with and without VG are also presented and analysed in an attempt to reveal the dependency of PHV on ship wake.