影响某艇喷水推进器推进性能的若干因素

基于某艇的推进性能需求，以喷水推进器设计工况为分析对象，采用计算流体力学（Computational Fluid Dynamics，CFD）方法，建立计算模型，研究叶轮叶顶间隙、流道格栅密度、艇底水底间距、双泵轴间距等工程应用因素对推进性能的影响，可为某艇喷水推进器的设计、安装与使用等提供合理依据。

Several Factors Affecting Propulsion Performance of Water-Jet Propulsor of a Boat

Based on the propulsion performance requirements of a boat, and taken the design working condition of water-jet propulsor as the analysis object, the calculation model is to establish with the Computational Fluid Dynamics (CFD) method. The influences of engineering application factors, such as blade tip clearance of impeller, flow channel grid density, distance between boat bottom and water bottom, and distance between shafts of two pumps on the propulsion performance are studied, which can provide reasonable basis for the design, installation, and use of water-jet propulsor of a boat.