Open AccessMulti-Objective Drag and Sound Optimization of Square Cylinder Retrofitted with Splitter Plate
Publication year - 2019
Publication title -
international journal of recent technology and engineering
Language(s) - English
Resource type - Journals
ISSN - 2277-3878
DOI - 10.35940/ijrte.d1065.1284s219
Subject(s) - drag , splitter plate , splitter , cylinder , acoustics , square (algebra) , reduction (mathematics) , aerodynamics , aerodynamic drag , drag divergence mach number , drag coefficient , flow (mathematics) , sound (geography) , mechanics , physics , engineering , optics , geometry , mathematics , mechanical engineering
The application of a splitter plate on square cylinders to reduce drag in cross-flow is an active research area. However, the associated aeroacoustic sound in the surrounding fluid also undergoes reduction, an aspect which has received less attention. This paper presents a numerical methodology for coupled aerodynamic and aeroacoustic calculations for flow past square cylinders with various splitter plate lengths. Computations are performed at a Re of 22000 using URANS technique and FW-H analogy. Observing that drag reduction and sound reduction occur at different splitter plate lengths, a two-objective optimization problem is posed to minimize the drag and OASPL simultaneously