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Using Sensitivities for Flow Analysis

  • Andrew G. Godfrey
Part of the Progress in Systems and Control Theory book series (PSCT, volume 24)

Abstract

The capabilities of the sensitivity-equation method are presented in context of aerodynamic analysis of hypersonic flight and air-breathing propulsion systems. The method yields stability derivatives, provides parametric guidance, accurately predicts boundary-layer thinning and growth, the onset of flow separation, separation bubbles, and the driving mechanisms in chemically reacting flows. The accuracy of sensitivity-equation calculations are assessed for viscous, chemically reacting flows with comparisons to theoretical and central-difference results. The sensitivity results are used to prioritize design variables by level of relative influence. Being linear, the sensitivity solutions require 10% or less of the computational effort needed to compute flow solutions.

Keywords

Equivalence Ratio Flame Front Separation Bubble Sensitivity Equation Airfoil Surface 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • Andrew G. Godfrey
    • 1
  1. 1.AeroSoft, Inc.BlacksburgUSA

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