Adjoint-Based Multi-Point and Multi-Objective Optimization of a Turbocharger Radial Turbine

International Journal of Turbomachinery, Propulsion and Power

Lasse Mueller¹  Tom Verstraete¹ 

[1] Von Karman Institute for Fluid Dynamics, Turbomachinery and Propulsion Department, Waterloosesteenweg 72, 1640 Sint-Genesius-Rode, Belgium;

关键词: adjoint;    multi-objective optimization;    computational fluid dynamics;    inertia;    radial turbines;   

DOI  :  10.3390/ijtpp4020010

来源: DOAJ

【 摘 要 】

This paper presents a gradient-based design optimization of a turbocharger radial turbine for automotive applications. The aim is to improve both the total-to-static efficiency and the moment of inertia of the turbine wheel. The search for the optimal designs is accomplished by a high-fidelity adjoint-based optimization framework using a fast sequential quadratic programming algorithm. The proposed method is able to produce improved Pareto-optimal designs, which are trade-offs between the two competing objectives, in only a few iterations. This is realized by redesigning the blade shape and the meridional flow channel for the respective target while satisfying imposed aerodynamic constraints. Furthermore, a comparative study with an evolutionary algorithm suggests that the gradient-based method has found the global Pareto front at a computational cost which is about one order of magnitude lower.

【 授权许可】

Unknown