Rapid approximate determination of nonlinear solutions - Application to aerodynamic flows and design/optimization problemsStahara et al. (1978) have considered the use of an approximation technique which employs two or more nonlinear base solutions determined by the full computational method to predict entire families of related nonlinear solutions. The present investigation provides results for several applications of that method which demonstrate both its accuracy and its utility for engineering applications. Attention is given to the perturbation concept and methods, aspects of coordinate straining, aspects of analytical formulation, and an application to surface properties. In a discussion of the results, single and multiple parameter perturbations are considered along with a combination of the approximation method with optimization procedures. The results show that it is possible to combine in certain cases large savings in computational cost with improved optimization.
Document ID
19820052036
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Stahara, S. S. (Nielsen Engineering and Research, Inc. Mountain View, CA, United States)