Title: Adjoint method-based inverse design of transonic compressor cascade with boundary layer control

Authors: B. Ziegler

Addresses: Chair of Thermal Engineering, Poznan University of Technology, ul. Piotrowo 3, 60-695 Poznań, Poland

Abstract: Gradient-based methods for inverse design and optimisation are powerful tools for CFD-based aerodynamic design. For problems characterised by large number of design variables, the computational effort of gradient-based optimisation can be however prohibitively high. In this work, a numerical approach for which the number of design variables has insignificant effect on computational effort is used. Adjoint approach is a suitable methodology for handling inverse design or optimisation of complex geometries with single objective functional. In this work, inverse design of 2D transonic compressor cascade with target pressure distribution chosen for later use of active boundary layer control is presented. High aerodynamic loading inviscid design is performed and then adapted for viscous flow with steady tangential blowing boundary layer control and investigated with RANS analysis.

Keywords: inverse design; transonic flows; adjoint method; turbomachinery; boundary layer control; BLC; axial compressors; gradient based optimisation.

DOI: 10.1504/PCFD.2017.10009721

Progress in Computational Fluid Dynamics, An International Journal, 2017 Vol.17 No.6, pp.335 - 343

Received: 03 Nov 2016
Accepted: 13 Mar 2017

Published online: 19 Dec 2017 *

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