沉浮、俯仰及控制面振动引起的跨音速非定常气动载荷计算
Unsteady Transonic Aerodynamic Loadings on the Airfoil Caused by Heaving, Pitching Oscillations and Control Surface
-
摘要: 本文将文献[9]提出改进的通量分裂方法,应用于随时间变化的贴体网格中,建立了可用于求解非定常Euler方程的通量分裂方法.该方法是以连续的特征值分离为基础,它具有方法简单,便于推广使用的特点.同时克服了Steger-Warming通量分裂方法存在的问题.对通量分裂后的Euler方程.利用MUSCL型迎风差分建立了具有二阶精度的有限体积方程.文中以NACA64A—10翼型为例,对其在跨音速流场中进行沉浮、俯仰及带有振动控制面引起的非定常气动载荷进行了计算.部分计算结果与相应的实验结果进行了比较,吻合良好Abstract: An implicit upwind finite volume solver for the Euler equations using the improved flux-splitting method is established and used to calculate the transonic flow past the airfoils with heaving, pitching oscillations and the control surface. Results are given for the NACA64A-10 airfoil which is in harmonic heaving and pitching oscillation and with the control surface in the transonic flow field. Some computational results are compared with the experiment data and the good agreements are shown in the paper.
-
Key words:
- transonic /
- unsteady flow /
- Euler equations /
- heaving oscillation
-
[1] Borland,C.,D.Rizzetta and H.Yoshihara,Numerical solution of three-dimensional unsteady transonic flow over swept wings,AIAA-paper 80-1369,July(1980). [2] Sankar,L.N.,J.B.Malone and Y.Tassa.,An implicit conservative algorithm for steady and unsteady three-dimensional transonic potential flows,Proceedings of the AIAA Fifth Computational Fluid Dynamics Conference,Palo Alto,CA,June(1981),199-212. [3] Jameson,A.and V.Venkatakrishnan,Transonic flow about oscillating airfoils using the Euler equations,AIAA-paper 85-1514(1985). [4] Chyu,W.J.,S.S.Davis and K.S.Chang,Calculation of unsteady transonic flow over an airfoil,AIAA Journal,19,6(1981),684-690. [5] 高正红,跨音速定常与非定常流动的Euler方程解,西北工业大学博士论文(1989). [6] Thomas,J.L.,B.Van Leer and R.W.Walfer,Implicit flux-split schemes for the Euler equations,AIAA-paper 85-1680(1985). [7] Thompson,J.F.,Grid generation techniques on computational fluid dynamics,AIAA Journal,22(1984),1505. [8] 高正红,用多重网格法快速生成随时间变化的贴体网格,航空学报,9(3)(1988). [9] 高正红、刘千刚,一种求解Eulcr方程的改进的通量分裂方法.(待发表). [10] Davis,S.S.and G.N.Malcolm,Experimental unsteady aerodynamics of conventional and super-critical airfoils,NACA TM 81221. [11] Davis,S.S.and G.N.Malcolm,Experiments in unsteady transonic flow,Proceedings of AIAA/ASME/AHS 20th Structures,Structural Dynamics and Matericals Conference,St.Loris,Mo.,April(1979).
点击查看大图
计量
- 文章访问数: 2050
- HTML全文浏览量: 72
- PDF下载量: 430
- 被引次数: 0