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.
This work was supported by the NASA SBIR program.
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© 1998 Springer Science+Business Media New York
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Godfrey, A.G. (1998). Using Sensitivities for Flow Analysis. In: Borggaard, J., Burns, J., Cliff, E., Schreck, S. (eds) Computational Methods for Optimal Design and Control. Progress in Systems and Control Theory, vol 24. Birkhäuser, Boston, MA. https://doi.org/10.1007/978-1-4612-1780-0_11
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DOI: https://doi.org/10.1007/978-1-4612-1780-0_11
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