Shock‐free redesign using finite elements
作者:
G. F. Carey,
T. T. Pan,
期刊:
Communications in Applied Numerical Methods
(WILEY Available online 1986)
卷期:
Volume 2,
issue 1
页码: 29-35
ISSN:0748-8025
年代: 1986
DOI:10.1002/cnm.1630020106
出版商: John Wiley&Sons, Ltd
数据来源: WILEY
摘要:
AbstractA finite element formulation and algorithm for calculation of shock‐free compressible flows and design of shockless airfoils is developed. The formulation is conceptually similar to current finite difference methods in that it combines the use of a fictitious gas for a regularized compressible potential flow calculation, together with the method of characteristics in the supersonic pocket. The redesigned shock‐free airfoil surface is determined from a subsidiary streamline calculation. In the present analysis, a variational finite element method is used and optimal control techniques are employed to compute the solution to the discrete problem. Numerical results and comparison studies with finite difference results for a representative case are gi
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