Shape optimization of flow split ducting elements using an improved Box complex method. Issue 2 (1st February 2017)

• Record Type: Journal Article
• Authors: Srinivasan, K.; Balamurugan, V.; Jayanti, S.
• Is Part Of: Engineering optimization. Volume 49:Issue 2(2017)
• Page Start: 199
• Page End: 215
• Publication Date: 2017-02-01
• Subjects: Inverse shape design -- internal flow -- computational fluid dynamics -- search algorithms -- Box complex method -- computational efficiency; Engineering design -- Periodicals; Mathematical optimization -- Periodicals; 620.0042
• DOI: 10.1080/0305215X.2016.1170824
• Languages: English
• ISSNs: 0305-215X

Abstract

ABSTRACT: Iterative search methods, such as the Box complex method, can be used for inverse shape design problems. In the present article, an improved version of the Box complex method is proposed specifically for computational fluid dynamics-based optimization of fluid flow ducting elements. The original Box complex method is improved by (1) assigning non-uniform weights for the estimation of the centroid, (2) using a reduced reflection factor for accelerated convergence, and (3) introducing measures to prevent premature breakdown of the iterative process. The success of the improved Box complex method over the original Box complex method is demonstrated on two benchmark functions and by applying it to two fluid flow problems of engineering. The improved method is shown to substantially accelerate the convergence with approximately 50% reduction in computational effort for the T-junction and manifold problems.