- 相关推荐
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 combustion04-28
Improvement of Input Power Dynamic Range for Wavelength Converters Based on Cross-Gain Modulation05-02
Improvement of Renormalization Group for Barenblatt Equation04-29
Combined Density-based and Constraint-based Algorithm for Clustering05-02
Wake up!冬眠的动物醒来啦！05-02
The Effect of Composite Flexures on Aeroelastic Stability of a Hingeless Rotor Blade04-27
基于Quick Capture技术的摄像头驱动方案05-01
Wake-up Call Service 唤醒服务05-04
Adapting Non-Task-Based Materials to Fit a Task-Based Framework04-27
ADVANCED NICKEL-BASED AND NICKEL-IRON-BASED SUPERALLOYS FOR CIVIL ENGINEERING APPLICATIONS04-29