大侧斜桨敞水性能及流场数值研究

针对库存大侧斜桨,基于商用RANS代码,利用结构化网格技术和流道计算模型开展了大侧斜桨敞水水动力和流场的数值分析.在进速系数J ε0.33,0.95]范围内,文中计算得到的敞水螺旋桨水动力与试验结果差异在3%以内.通过敞水螺旋桨流场计算和计及粘性影响鼓动盘计算结果比较可知,螺旋桨对桨前流场影响主要是抽吸作用;对桨后近场区域XIDP<4流场影响主要是滑流,轴向速度周向均值沿径向分布主要受桨叶负荷分布控制;到中问区域415,螺旋桨尾流变成了单一的剪切流.

Numerical simulation on the open-water performance and flow fields of the high-skew propeller

Using the structured-grid technology and the flow model around one blade passage,the hydro-dynamic performance and wake characteristics of the high-skew stock propeller were numerically analyzed with commercial RANS methods.Among the advanced ratio J 0.33 to 0.95,the differences between the CFD results and experiments about the open-water performance are within 3%.Through the comparison of the flow fields around the propeller computed by CFD and the actuator-disk theory with viscous effect,it is in-dicated ...