Multi-objective optimization of a 3D vaneless diffuser based on fuzzy theory

2008, Volume 2, Issue 1

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Frontiers in Energy >> 2008, Volume 2, Issue 1 doi: 10.1007/s11708-008-0006-5

Multi-objective optimization of a 3D vaneless diffuser based on fuzzy theory

School of Mechanical Engineering, Shanghai Jiao Tong University;

Available online: 2008-03-05

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Abstract

An optimization model based on fuzzy theory was set up and the corresponding Interactive modified simplex (IMS) method was developed to solve it. Both static pressure recovery and total pressure loss were considered in the model. Computational fluid dynamics (CFD) method was applied to solve the Reynolds-Averaged Navier-Stokes equation (RANS) and to find flow field distribution to get the value of the object function. After receiving the new shroud curve, grid movement and redrawing technology were adopted to avoid grid-line crossing and negative cells. The shroud curve was fitted with B-spline. The optimized results concur with the results reported in references.

Keywords

Computational ; pressure recovery ; B-spline ; technology ; corresponding Interactive

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