An introduction to chaos theory in CFDThe popular subject 'chaos theory' has captured the imagination of a wide variety of scientists and engineers. CFD has always been faced with nonlinear systems and it is natural to assume that nonlinear dynamics will play a role at sometime in such work. This paper will attempt to introduce some of the concepts and analysis procedures associated with nonlinear dynamics theory. In particular, results from computations of an airfoil at high angle of attack which exhibits a sequence of bifurcations for single frequency unsteady shedding through period doublings cascading into low dimensional chaos are used to present and demonstrate various aspects of nonlinear dynamics in CFD.
Document ID
19900052670
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Pulliam, Thomas H. (NASA Ames Research Center Moffett Field, CA, United States)