THE INFLUENCE OF BLUFF BODY SHAPE VARIATIONS ON AERODYNAMIC CHARACTERISTICS IN FLOW AROUND A CYLINDER

Christian Jovie Yudhananta, . (2026) THE INFLUENCE OF BLUFF BODY SHAPE VARIATIONS ON AERODYNAMIC CHARACTERISTICS IN FLOW AROUND A CYLINDER. Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi, 8 (1). pp. 249-262. ISSN 2716-2923

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Abstract

Fluid flow around an object plays an important role in various fields, including aerodynamics, building design, and transportation. This study examines the effect of three two-dimensional bluff body shapes, including Circular, Square, and Diamond, on the flow pattern, drag and lift coefficients, and vortex shedding characteristics. The methodology used is Computational Fluid Dynamics (CFD) simulation for incompressible flow with a Reynolds number of 100. The results show that variations in geometric shapes significantly affect the shape formation, flow stability, and aerodynamic force response. The three bluff body variations were found to produce fluctuating aerodynamic characteristics due to the influence of the von Kármán vortex phenomenon. In the diamond cylinder variation, it was found to be the configuration with the widest shape, having the highest average drag coefficient value of 1.84, and exhibiting the most significant force amplification, with an average lift coefficient value of 0.36 and a Strouhal number (St) of 0.18. Overall, variations in bluff body shapes significantly affect the flow pattern, Vortex Shedding frequency, and the total aerodynamic force acting on the object.

Item Type:	Article
Additional Information:	[No.Panggil:2010311057] [Pembimbing: Fitri Wahyuni] [Penguji 1: Damora Rhakasywi] [Penguji 2: Sigit Pradana]
Uncontrolled Keywords:	Bluff, CFD, drag, vortex, aerodynamic
Subjects:	T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery
Divisions:	Fakultas Teknik > Program Studi Teknik Mesin (S1)
Depositing User:	CHRISTIAN JOVIE YUDHANANTA
Date Deposited:	28 Aug 2026 00:53
Last Modified:	28 Aug 2026 00:53
URI:	http://repository.upnvj.ac.id/id/eprint/52551

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