摘要
介绍了喷水推进理论,把复杂的喷水推进系统分解成两个主要部件泵体和进水管道进行研究,着重考虑了船体边界层对进口动量和来流动能的影响,并用数学方法表示了这些影响.其次,基于动量守恒和能量守恒,从理论上建立推力与功率、航速的关系式,并用此公式对某喷水推进船的推力进行计算,计算结果和试验曲线能很好地吻合.分析了本计算方法可能出现的误差.
Basic principle of waterjet is cited. Waterjet system is decomposed into two main parts, waterjet itself and duct, in order to calculate waterjet thrust by momentum method. And then mathematical method is used to describe the influence of boundary layer on momentum and energy of the incoming water. After that, the equation of thrust and power, velocity is derived from the conservation laws of momentum and energy respectively. This method is used to calculate a practical water jet vessel and the results from calculation are compared with the test data. It fits well. The error of the method is analyzed in the end.
出处
《武汉理工大学学报（交通科学与工程版）》
2006年第6期1098-1101,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
关键词
喷水推进
推力
动量法
边界层
waterjet thrust momentum method
boundary layer
