喷速比对浸没式喷水推进器推进性能的影响  

Effects of the jet velocity ratio on the propulsion performance of a submerged waterjet

作　　者：曹玉良[1] 王永生[1] 易文彬[1] 靳栓宝[1] 

机构地区：[1]海军工程大学动力工程学院,湖北武汉430033

出　　处：《哈尔滨工程大学学报》2015年第7期894-898,共5页Journal of Harbin Engineering University

基　　金：国家自然科学青年基金资助项目(51309229)

摘　　要：为了研究喷速比对浸没式喷水推进器性能的影响,选取喷速比分别为1.64和1.7的两型浸没式喷水推进泵,运用三元设计方法对两型浸没式喷水推进泵进行了水力设计。运用计算流体力学(CFD)方法分析了浸没式喷水推进泵的水力性能和空化性能。将这两型浸没式喷水推进泵分别安装在某型船上,对两型浸没式喷水推进泵装船后的推进性能进行了CFD数值模拟。研究表明:在设计航速时,两型浸没式喷水推进泵的空化性能都满足要求,并且推进效率都达到了63%以上,但喷速比为1.64时推进效率较高。In order to analyze the effects of the jet velocity ratio on the performance of a submerged waterjet,two types of submerged waterjet pumps were chosen with jet velocity ratios of 1.64 and 1.7,respectively. The two submerged waterjet pumps were designed by the three-dimensional design method. Hydraulic performance and cavitation performance of the two submerged waterjet pumps were analyzed by the computational fluid dynamics（ CFD）method. The two submerged waterjet pumps were installed on a ship separately and the propulsion performance of the two installed submerged waterjet pumps was numerically simulated by the CFD method. The research demonstrated that at the design speed,the cavitation performance of both the two submerged waterjet pumps meets the demand and the propulsion efficiency of the both is more than 63%. The propulsion efficiency is higher when the jet velocity ratio is 1.64.

关 键 词：浸没式喷水推进泵 喷速比 三元设计方法 计算流体力学 空化性能 推进效率 

分 类 号：U664.33[交通运输工程—船舶及航道工程]