摘要
采用基于非结构网格的有限体积法对螺旋桨的水动力性能和周围黏性流场进行了大涡模拟,在加权最小二乘法重构流动物理量梯度的基础上,分别以三阶精度的UMUSCL(Unstructured Monotonic Upstream-centered Schemes for Conversation Law)插值方法和方向导数法离散控制方程的对流项和亚格子应力项,计算得到的螺旋桨的定常水动力性能、叶片表面压力和尾流场速度与试验吻合很好。
The cell-centered finite volume method（FVM） with unstructured meshes has been applied to the large eddy simulation（LES） of viscous flow field around marine propeller. Based on gradient reconstruction by the weighted least square method, the inviscid fluxes are interpolated by a third-order unstructured MUCSL-scheme and the viscous fluxes and subgrid scale stress are calculated with the directional derivative method. Numerical results of the hydrodynamic force, the pressure on the blades and the velocity in the weak of propeller are in good agreement with the experimental data.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2008年第4期419-425,共7页
Chinese Journal of Hydrodynamics
关键词
大涡模拟
有限体积法
非结构网格
螺旋桨
Large Eddy Simulation（LES）
Finite Volume Method（FVM）
unstructured mesh
propeller
