Rotor free-wake modeling using a pseudoimplicit relaxation algorithm

被引:55
作者
Bagai, A
Leishman, JG
机构
[1] Center for Rotorcraft Education and Research, A. James Clark School of Engineering, Glenn L. Martin Institute of Technology, Department of Aerospace Engineering, University of Maryland, College Park, MD
来源
JOURNAL OF AIRCRAFT | 1995年 / 32卷 / 06期
关键词
D O I
10.2514/3.46875
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
A pseudoimplicit predictor-corrector relaxation algorithm with five-point central differencing in space has been developed for the solution of the governing differential equations of the helicopter rotor free-wake problem. This new approach is compared and contrasted with more conventional explicit-type free-wake algorithms. A convergence analysis shows that the new algorithm provides for much more rapid convergence characteristics compared to explicit methods, with improvements in numerical efficiency and predictive accuracy.
引用
收藏
页码:1276 / 1285
页数:10
相关论文
共 37 条
  • [1] Larin A.V., Vortex wake behind a helicopter, Aviatsiya I Kosmonavtika, 3, pp. 32-33, (1973)
  • [2] Larin A.V., Handbook of Flow Visualization, (1989)
  • [3] Landgrebe A.J., An analytical and experimental investigation of helicopter rotor performance and wake geometry characteristics, U.S. Army Air Mobility Research and Development Lab, (1971)
  • [4] Kocurek J.D., Berkowitz L.F., Velocity Coupling—A New Concept for Hover and Axial Flow Wake Analysis and Design, (1982)
  • [5] Egolf T.A., Landgrebe A.J., –Helicopter Rotor Wake Geometry and Its Influence in Forward Flight, Vol. I-Generalized Wake Geometry and Wake Effect on Rotor Airloads and Performance,—, (1983)
  • [6] Beddoes T.S., A wake model for high resolution airloads, Proceedings of the 2Nd International Conference on Basic Rotorcraft Research (Triangle Park, NC), (1985)
  • [7] Lehman A.F., Model studies of helicopter rotor flow patterns, U.S. Army Aviation Material Lab, (1968)
  • [8] Landgrebe A.J., Bellinger E.D., An investigation of the quantitative applicability of model helicopter rotor wake patterns obtained from a water tunnel, United Aircraft Research Lab, (1971)
  • [9] Clark D.R., Leiper A.C., Handbook of Flow Visualization, (1989)
  • [10] Landgrebe A.J., An analytical method for predicting rotor wake geometry, Journal of the American Helicopter Society, 14, 4, pp. 20-32, (1969)