Turbine Blade Row Optimization Through Endwall Contouring by an Adjoint Method
Authors:
- 1 March 2015
- journal article
- research article
- Published by American Institute of Aeronautics and Astronautics (AIAA) in Journal of Propulsion and Power
- Vol. 31 (2) , 505-518
Abstract
This paper presents the application of a viscous continuous adjoint method for the optimization of a low-aspect-ratio turbine blade row through endwall contouring. A generalized wall-function method is implemented in a Navier–Stokes flow solver with Menter’s shear-stress transport k-ω turbulence model to simulate the secondary flow with reduced requirements on grid density. Entropy production through the blade row combined with a flow turning constraint is used as the objective function in the optimization. With the viscous adjoint method, at each design cycle, the complete gradient information needed for optimization can be obtained by solving the flow governing equations and their corresponding adjoint equations only once for each cost function, regardless of the number of design parameters. Flow loss through the blade row is minimized while maintaining the same mass-averaged flow turning at the design condition. The performance of the optimized blade at off-design conditions is also evaluated and compa...Keywords
This publication has 44 references indexed in Scilit:
- Interpretation of Adjoint Solutions for Turbomachinery FlowsAIAA Journal, 2013
- Optimization of Nonaxisymmetric Endwalls in Compressor S-Shaped DuctsJournal of Turbomachinery, 2009
- On the Coupling of Inverse Design and Optimization Techniques for the Multiobjective, Multipoint Design of Turbomachinery BladesJournal of Turbomachinery, 2009
- Effect of End Wall Contouring on Performance of Ultra-Low Aspect Ratio Transonic Turbine Inlet Guide VanesJournal of Turbomachinery, 2008
- Multiple Objective Optimization and Inverse Design of Axial Turbomachinery BladesJournal of Propulsion and Power, 2008
- Multiple Surrogate Modeling for Axial Compressor Blade Shape OptimizationJournal of Propulsion and Power, 2008
- Advanced Aerodynamic Optimization System for TurbomachineryJournal of Turbomachinery, 2008
- Studies of the continuous and discrete adjoint approaches to viscous automatic aerodynamic shape optimization2001
- A comparison of the continuous and discrete adjoint approach to automatic aerodynamic optimization2000
- Aerodynamic design via control theoryJournal of Scientific Computing, 1988