CAJ | 학술논문

为研究侧向推进器的水动力性能,采用CFD方法以四叶Ka型螺旋桨侧向推进器模型实验为依据进行了仿真验证,结果吻合度高.在此基础上,模拟和分析零航速时不同螺距比、盘面比、通道长度和船艏两侧倾斜角度对侧向推进器流场和水动力性能的影响.结果表明:侧推器通道长度对侧推器效率影响较大,在2D时,效率最高;侧推器进出口处两侧倾斜角度对性能也有影响,船艏水线与侧推器轴线的夹角大则效率高.另外,研究了有航速时,首侧推器受航速影响的规律并分析了侧推器失效的原理.
위연구측향추진기적수동력성능,채용CFD방법이사협Ka형라선장측향추진기모형실험위의거진행료방진험증,결과문합도고.재차기출상,모의화분석령항속시불동라거비、반면비、통도장도화선수량측경사각도대측향추진기류장화수동력성능적영향.결과표명:측추기통도장도대측추기효솔영향교대,재2D시,효솔최고;측추기진출구처량측경사각도대성능야유영향,선수수선여측추기축선적협각대칙효솔고.령외,연구료유항속시,수측추기수항속영향적규률병분석료측추기실효적원리.
In order to study the hydrodynamic performance of transverse thrusters,by using CFD method,the simulation and verification of thrusters with a four-leaf Ka-type controllable pitch propeller are compared with experimental data and good agreement is obtained.The effects of pitch ratio,expanded area ratio,boss ratio,tunnel length and wall inclination without ship speed are observed on the performance of the transverse thrusters.The results show that tunnel length has great effect on the efficiency and it reaches a maximum at 2D,the tilt angle of the bow sides near the transverse thruster has effect,big angle between water line of bow and axis of the thruster has higher efficiency.In addition,after studying the change of bow thrusters' performance under different ship speeds,the thrusters' failure mechanism is discussed.