Analysis of high-incidence separated flow past airfoilsAn unsteady Navier-Stokes (NS) analysis is developed and used to carefully examine high-incidence aerodynamic separated flows past airfoils. Clustered conformal C-grids are employed for the 12 percent thick symmetric Joukowski airfoil as well as for the NACA 0012 airfoil with a sharp trailing edge. The clustering is controlled by appropriate one-dimensional stretching transformations. An attempt is made to resolve many of the dominant scales of an unsteady flow with massive separation, while maintaining the transformation metrics to be smooth and continuous in the entire flow field. A fully implicit time-marching alternating-direction implicit-block Gaussian elimination (ADI-BGE) method is employed, in which no use is made of any explicit artificial dissipation. Detailed results are obtained for massively separated, unsteady flow past symmetric Joukowski and NACA 0012 airfoils.
Document ID
19900029726
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chia, K. N. (Cincinnati Univ. OH, United States)
Osswald, G. A. (Cincinnati Univ. OH, United States)
Chia, U. (Cincinnati, University OH, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Aerodynamics
Meeting Information
Meeting: Symposium on Numerical and Physical Aspects of Aerodynamic Flows