Effects of splitter geometry as a passive control method on sound pressure level, a mathematical modeling

Amir Bagherzadeh and Forough Abbasi Parizad
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Amir Bagherzadeh: School of Mechanical Engineering, Isfahan University of Technology (IUT), Isfahan, Iran
Forough Abbasi Parizad: Department of Mechanical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, P. O. Box 91775-1111, Mashhad, Iran

International Journal of Modern Physics C (IJMPC), 2023, vol. 34, issue 10, 1-16

Abstract: This study investigates the aeroacoustics of flow around a square cylinder using an in-house OpenFoam solver with Ffowcs Williams’ Hawking methodology and the k − ω SST turbulence model. First, the numerical results were validated against experimental data. Then, the effects of a 1mm thick splitter with different lengths, 2.5 (L/D = 0.25), 5 (L/D = 0.5), 7.5 (L/D = 0.75) and 10 (L/D = 1), were studied as a passive control method. The findings indicate that the splitter suppresses the vortex shedding, a dipole source of aeroacoustic emission, resulting in a reduction of the noise level by up to 7% for L/D = 0.25, 9.7% for L/D = 0.5, 13.65% for L/D = 0.75 and 17.5% for L/D = 1.

Keywords: Sound pressure level; passive control method; splitter geometry; vortex shedding (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1142/S0129183123501395

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