【摘要】 在喷水推进器进口流道内外流场数值模拟的基础上，通过在Star CCM+软件中编制宏命令，在一条从获流区顶部中点发出的射线上用二分法取点，生成经过该点的流线，并判断其是否进入流道内部，逐次逼近止于喷水推进器进口唇口的流线，可快速、准确地确定获流区的边界，提高喷水推进器推力预报的精度。考察进口流道几何、来流条件等参数对获流区形状的影响，其中进速比、船底边界层的影响较大。更多还原

【Abstract】 On the basis of the numerically simulated flowfield inside and outside the waterjet intake, the points on the half-line away from the center of the top of the capture area are chosen with the bisection method. By using the macro functions provided by software Star CCM+, from which streamlines through those points are generated and judged if they enter the intake or not. The boundary of capture area can be found quickly and accurately by approaching the streamlines ending at intake lip, which can be used to get more accurate thrust of waterjet. The shape and boundary of capture area are changed with the geometry of watejet intake, inflow velocity ratio and boundary layer on the bottom of ship, etc. The inflow velocity ratio and boundary layer on the bottom are more important to determine the shape of capture area of waterjet intake.更多还原