论文标题
粗壁对线性剪切流中椭圆形颗粒的拖放，提升和扭矩的影响
Effect of rough wall on drag, lift, and torque on an ellipsoidal particle in a linear shear flow
论文作者
论文摘要
本研究提供了对粗壁附近椭圆形粒子上力的详细描述。使用车身拟合网格进行三维数值模拟，以估计阻力，升力和扭矩系数。在一系列参数（例如剪切雷诺数（$ 10 \ le re_s \ le 100 $），方向角度（$ 0 \leθ\ le 180 $）和壁式分离距离（$ 0.1 \leδ\ 2.0 $）上，以获取变量的全面描述，进行了大量模拟。使用仿真结果，我们开发了阻力和提升系数的相关性，以描述粗壁，倾斜角和粒子雷诺数对流体动力系数的影响。所提出的相关性可用于使用Eulerian-Lagrangian框架进行两个相流仿真。
The present study provides a detailed description of the forces on an ellipsoidal particle in the vicinity of the rough wall. Three-dimensional numerical simulations are performed using body-fitted mesh to estimate the drag, lift, and torque coefficients. A large number of simulations are conducted %(approximately 2400) over a range of parameters such as shear Reynolds number ($10 \le Re_s \le 100$), orientation angle ($0\leθ\le 180$), and wall-particle separation distance ($0.1\leδ\le2.0$) to get a comprehensive description of variation of the above coefficients. Using the simulation results, we develop the correlations for the drag and lift coefficients to describe the effect of rough wall, inclination angles, and particle Reynolds numbers on the hydrodynamic coefficients. The proposed correlations can be used for two phase flow simulation using Eulerian-Lagrangian framework.
