混流式喷水推进泵导叶的反问题设计及数值验证  

Inverse Design and Numerical Verification of the Guide Vane on Mixed-flow Water Jet Pump

作　　者：王声森 苏石川[1] 冯德胜 曹佳斌 WANG Shengsen;SU Shichuan;FENG Desheng;CAO Jiabin(School of Energy and Power Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003,Jiangsu, China;Nantong Office of Jiangsu Branch of China Classification Society, Nantong 226000, Jiangsu, China)

机构地区：[1]江苏科技大学能源与动力工程学院,江苏镇江212003 [2]中国船级社江苏分社南通办事处,江苏南通226000

出　　处：《机电设备》2019年第2期8-13,共6页Mechanical and Electrical Equipment

摘　　要：采用反问题设计方法,在满足设计流量、转速、扬程、推力等参数的条件下对原始导叶进行重新设计,以提高喷水推进泵导叶性能。通过调整叶片载荷分布,构造了前、中、后3种加载形式,获得了相应的导叶形状。使用计算流体动力学方法,在额定工况下对所得导叶进行数值模拟,选择最优结果并在多工况下进行数值计算并验证推力。计算结果表明:前载型导叶流道较短,可有效抑制角区分离,额定工况下导叶效率达到94.95%,喷泵效率较后载型提升2.14%,扬程高出设计参数3.24 m,变工况条件下推力均高出设计要求。计算结果验证了反问题设计方法的可行性及有效性。In order to improve the performance of the guide vane of water jet pump, the inverse design method is adopted to redesign the original guide vane under the condition that such parameters as flow, speed, head and thrust meet the design requirements. By adjusting the blade loading distribution, three kinds of loading forms, front loading, middle loading and rear loading, are constructed to obtain the corresponding blade shapes. The numerical simulation of the guide vanes under rated conditions is carried out by using the CFD method, and the optimal results are chosen and numerical calculations are carried out under various conditions to verify the thrust. The calculation results show that the passageway of front loading guide vane is short, which can effectively suppress the corner separation. Under the rated condition, the efficiency of the front loading guide vane is 94.95%, the jet pump efficiency is 2.14% higher than that of the rear loading type and the head is 3.24 m higher than the design parameter. The thrust are higher than the design requirements under various conditions. The feasibility and effectiveness of the inverse design method are verified by the calculation results.

关 键 词：船舶 喷水推进泵 导叶 反问题设计 载荷分布 数值验证 

分 类 号：U661.43[交通运输工程—船舶及航道工程]