Numerical Studies on the Enhancement of Heat Transfer in a Channel through Employment of VG Mechanisms

Compact and passive devices known as VGs have been used for more than 50 years in a variety of industries, including flowinduced vibration and renewable energy. VGs are employed in a variety of settings, such as renewable energy andflow-induced vibration. These apparatuses produce fluid movement pat...

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Bibliographic Details
Published inASHRAE Topical Conference Proceedings pp. 304 - 312
Main Authors Derakhshandeh, Javad Farrokhi, Ali, Seyedeh Fatemeh Al, Dashti, Fajer Ali
Format Conference Proceeding
LanguageEnglish
Published Atlanta American Society of Heating, Refrigeration and Air Conditioning Engineers, Inc 01.01.2023
Subjects
Circular cylinders
Design
Efficiency
Flow separation
Fluid dynamics
Fluid flow
Friction
Heat transfer
Heat transmission
Laminar flow
Numerical analysis
Pressure drop
Renewable energy
Renewable resources
Reynolds number
Turbulence
Turbulent flow
Vibration
Vortices
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Summary:Compact and passive devices known as VGs have been used for more than 50 years in a variety of industries, including flowinduced vibration and renewable energy. VGs are employed in a variety of settings, such as renewable energy andflow-induced vibration. These apparatuses produce fluid movement patterns known as vortices, which help break up the laminar flow and promote turbulence. By increasing the rate of heat transfer between the fluid and the conduit walls, this turbulence can produce more effective and persuasive heat transfer. The main objective of this study is to examine the impact of VGs (VGs) on heat transfer and pressure drop. The efficacy of including a square and circular cylinder with a hydraulic diameter ofD = 0.002 (m) as a VG in laminar flow regimes at Reynolds number 100 to 500 was examined by employing numerical studies, when the cylinder is mounted in a micro channel. The outcomes demonstrated that heat transmission improved in both situations. However, the outcomes of applying square and circular cylinders were contrasted. It is also demonstrated that setting stationary square or circular cylinders improves heat transfer rates, regulates flow separation, and raises flow pressure drops.