21st Congress of International Council of the Aeronautical Sciences, Melbourne, Australia, 13-18 September, 1998
Paper ICAS-98-5.4.4

TURBOMACHINERY BLADE DESIGN USING THE NAVIER-STOKES EQUATIONS

Eyi S., Lee K. D.*
Middle East Technical University, Turkey; * University of Illinois, USA

Keywords: turbomachinery blade design, navier-stokes equations

This paper presents a design optimIzation method that couples a Navier-Stokes flow solver and numerical optimization algorithm. The design method improves the performance of a transonic turbine blade subject to specified design objective and constraints. The flow field prediction is based on the Navier-Stokes equations in order to represent the nonlinear, rotational and viscous physics of transonic flows. Sensitivity derivatives are obtained using finite differencing. Effects of different design variables on the performance of design optimization are evaluated. The method is demonstrated with several examples at transonic flow conditions.

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