Rotor wake capture improvement based

Rotor wake capture improvement based on high-order spatially accurate schemes and chimera grids

Abstract：A high-order upwind scheme has been developed to capture the vortex wake of a helicopter rotor in the hover based on chimera grids.In this paper,an improved fifth-order weighted essentially non-oscillatory (WENO) scheme is adopted to interpolate the higher-order left and right states across a cell interface with the Roe Riemarm solver updating inviscid flux,and is compared with the monotone upwind scheme for scalar conservation laws (MUSCL).For profitably capturing the wake and enforcing the period boundary condition,the computation regions of flows axe discretized by using the structured chimera grids composed of a fine rotor grid and a cylindrical background grid.In the background grid,the mesh cells located in the wake regions are refined after the solution reaches the approximate convergence.Considering the interpolation characteristic of the WENO scheme,three layers of the hole boundary and the interpolation boundary are searched.The performance of the schemes is investigated in a transonic flow and a subsonic flow around the hovering rotor.The results reveal that the present approach has great capabilities in capturing the vortex wake with high resolution,and the WENO scheme has much lower numerical dissipation in comparison with the MUSCL scheme. 作者： 徐丽[1]  翁培奋[2] Author： Li XU[1]  Pei-fen WENG[2] 作者单位： School of Mathematics and Physics, Shanghai University of Electric Power,Shanghai 200090, P. R. China;Shanghai Institute of Applied Mathematics and Mechanics,Shanghai University, Shanghai 200072, P. R. China 期 刊： 应用数学和力学（英文版）   EISCI Journal： Applied Mathematics and Mechanics 年，卷(期)： 2011, 32(12) 分类号： V211.3 Keywords： hovering rotor,vortex wake    Navier-Stokes equation    chimera grid    weightedessentially non-oscillatory (WENO) scheme    机标分类号： TP3 O1 机标关键词： background grid    upwind scheme    WENO scheme    numerical dissipation    boundary condition    conservation laws    helicopter rotor    high resolution    transonic flow    capabilities    performance    comparison    interface    improved    approach    results    three    paper    cells    based 基金项目： the National Natural Science Foundation of China Rotor wake capture improvement based on high-order spatially accurate schemes and chimera grids[期刊论文]  应用数学和力学（英文版） --2011, 32(12)徐丽  翁培奋A high-order upwind scheme has been developed to capture the vortex wake of a helicopter rotor in the hover based on chimera grids.In this paper,an improved fifth-order weighted essentially non-oscilla...

【Rotor wake capture improvement based】相关文章：

Effect of CuO on the efficiency of sulfur capture of Ca--based compounds during coal combustion10-02

Improvement of Input Power Dynamic Range for Wavelength Converters Based on Cross-Gain Modulation07-30

Improvement of Renormalization Group for Barenblatt Equation07-11

快手截图 FastStone Capture -电脑资料01-01

Combined Density-based and Constraint-based Algorithm for Clustering08-15

Adapting Non-Task-Based Materials to Fit a Task-Based Framework07-05

The Effect of Composite Flexures on Aeroelastic Stability of a Hingeless Rotor Blade07-07

ADVANCED NICKEL-BASED AND NICKEL-IRON-BASED SUPERALLOYS FOR CIVIL ENGINEERING APPLICATIONS10-07

Wake up!冬眠的动物醒来啦！01-21