Sonic Boom reduction by mesh adapted optimal control

Youssef Mesri Laurent Hascoët Frederic Alauzet Adrien Loseille Alain Dervieux

European project HISAC Research Report (33 pages)

Abstract: The role of INRIA in HISAC is to contribute to the developement of methods for the simulation and reduction of sonic boom. The contribution of INRIA to Task 2.3.2 concerns the application of Optimal Control methods to the optimisation of the nearfield flow around a supersonic aircraft. It is based on the application of an optimisation loop. We describe this optimisation loop, which is based on an Euler model and an adjoint-based gradient descent algorithm. Adjoint and gradients are obtained by applying Automated Differentiation techniques. The main novelty is the combination with a new mesh adaptation technique introduced in Task 2.3.1. This new tool is demonstrated on the supersonic geometry HISAC 2 REF-IT3 provided by Dassault-Aviation.

Keywords: CFD, Sonic Boom, Optimization, Autoamtic Differentiation, Mesh Adaptation

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@techreport{AMD06,
 author = {Alauzet, F. and Mesri, Y. and Dervieux, A.},
 title  = {Sonic Boom reduction by mesh adapted optimal control},
 type = {Research Report},
 number = {European project HISAC 18th Month 2.3},
 year = 2006
}