聚合多重网格法在旋翼前飞流场计算中的应用

许和勇; 叶正寅; 王刚; 史爱明

聚合多重网格法在旋翼前飞流场计算中的应用

西北工业大学翼型叶栅空气动力学国防科技重点实验室, 西安 710072

基金项目: 航空基础科学基金资助项目(04A53006);高等学校优秀青年教师教学科研奖励计划资助

计量
- 文章访问数: 1708
- HTML浏览量: 122
- PDF量: 468
- 被引次数: 0
出版历程
- 收稿日期: 2006-01-06
- 修回日期: 2006-12-05
- 刊出日期: 2007-02-28

Application of agglomeration multigrid method in calculation of rotor forward flight flow

National Key Laboratory of Aerodynamic Design and Research, Northwestern Polytechnical University, Xi'an 710072, China

摘要

摘要: 基于非结构动态嵌套网格, 将聚合多重网格方法引入到旋翼的前飞流场计算中.从初始的整体非结构网格出发, 快速建立相互重叠的两个子域网格, 同时无需建立背景网格便可以确定初始洞边界和初始插值贡献单元, 且动态嵌套时无需更新洞边界, 并采用了一种无需背景网格便可快速查找新的贡献单元的方法.分区利用聚合法生成多重网格, 利用双时间方法分区运用三层网格V循环求解非定常Euler方程, 两区的流场参数在重叠区实现耦合, 对旋翼的前飞流场进行了计算.结果表明, 多重网格方法能够有效地加快旋翼前飞流场收敛.
- 航空、航天推进系统 /
- 嵌套网格 /
- 多重网格 /
- 双时间方法 /
- 旋翼前飞流场
Abstract: An agglomeration multigrid method was applied to numerical calculation of rotor forward flight flow based upon the unstructured dynamic overset grids.Two overlapping subareas could be generated speedily from original global unstructured mesh,while the original hole fringe and donor elements could be established without using a background grid.And,the hole fringe needn't update during dynamic oversetting,and the new donor elements could be searched quickly by using a new technique without background grid.The agglomeration multigrids were generated separately in each subarea,and a three-level V cycle method was used to solve the unsteady Euler equations by dual time stepping.The flow field parameters were coupled in the overlapping area.Finally,the rotor forward flight flow was calculated.The results show that,the agglomeration multigrid method can facilitate the convergence of rotor forward flight flow effectively.
- aerospace propulsion system /
- dynamic overset grid /
- multigrid /
- dual time stepping /
- rotor forward flight flow

HTML

参考文献(14)

[1]	Jameson A,Yoon S.Lower upper implicit schemes with multiple grids for the Euler equations[J].AIAA Journal,1987,25(7):929-935.
[2]	杨树池.复杂流动空气动力学数值模拟及并行计算研究[D].西安:西北工业大学,1999.
[3]	Connel S D,Holmes D G.A 3D unstructured adaptive multigrid scheme for the Euler equations[J].AIAA Journal,1994,32(8):1626-1632.
[4]	Mavriplis D J.Three-dimensional unstructured multigrid for the Euler equations[J].AIAA.Journal,1992,30(7):1753-1761.
[5]	吕宏强,伍贻兆,夏键.三维非结构聚合多重网格法数值模拟研究[J].力学学报,2003,35(3):337-340.L Hongqiang,WU Yizhao,XIA Jian.Numerical simulation of flowfields with three-dimensional unstructured agglomeration multigrid algorithm[J].ACTA MECHANICA SINICA,2003,35(3):337-340.
[6]	朱培烨.三维非结构网格的欧拉方程聚合多重网格法[J].航空计算技术,2004,34(3):6-9.ZHU Peiye.Three dimensional agglomeration multigrid for the euler equations[J].Aeronautical Computer Technique,2004,34(3):6-9.
[7]	薛海峰,向锦武,张小谷.前飞状态旋翼动稳定性及自由度间相互作用研究[J].航空动力学报,2004,19(5):671-677.XUE Haifeng,XIANG Jinwu,ZHANG Xiaogu.Investigation of rotor dynamic stability and mutual excitation of different degrees of freedoms in forward flight[J].Journal of Aerospace Power,2004,19(5):671-677.
[8]	杨爱明.基于嵌套网格的直升机旋翼流场雷诺平均Navier-Stokes方程数值模拟[D].西安:西北工业大学,2000.
[9]	招启军,徐国华.使用高阶逆风通量差分裂格式的旋翼流场数值模拟[J].航空动力学报,2005,20(2):186-191.ZHAO Qijun,XU Guohua.Numerical simulations for the flow field of helicopter rotors in hovering based on high-order upwind flux-difference splitting scheme[J].Journal of Aerospace Power,2005,20(2):186-191.
[10]	杨爱明,翁培奋,乔志德.用多重网格方法计算旋翼跨声速无粘流场[J].空气动力学学报,2004,22(3):313-318.YANG Aiming,WENG Peifen,QIAO Zhide.Euler solution of transonic flow for a helicopter rotor in hover using multigrid method[J].Acta Aerodynamic Sinica,2004,22(3):313-318.
[11]	李孝伟,范绪箕.基于动态嵌套网格的飞行器外挂物投放的数值模拟[J].空气动力学学报,2004,22(1):114-117.LI Xiaowei,FAN Xuji.Simulation of the release of store based on the moving chimera grid technique[J].Acta Aerodynamic Sinica,2004,22(1):114-117.
[12]	史爱明.非结构动网格下非定常气动力计算和嗡鸣研究[D].西安:西北工业大学,2003.
[13]	Caradonna F X,Tung C.Experimental and analytical studies of a helicopterrotor in hover[R].NASA TM-81232,1981.
[14]	Sheffer S G,Alonso J J,Martinelli L,et al.Time-accurate simulation ofhelicopter rotor flows including aeroelastic effects[R].AIAA Paper 97-0399,1997.