Journal ArticleDOI
Mixed Convection Heat Transfer in a Grooved Channel in the Presence of a Baffle
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In this article, the authors present a comprehensive investigation of mixed convection in a differentially heated grooved channel in the presence of an adiabatic baffle supported centrally from the top wall.Abstract:
The paper presents a comprehensive investigation of mixed convection in a differentially heated grooved channel in the presence of an adiabatic baffle supported centrally from the top wall. Both assisting and opposing flow configurations are simulated using in-house CFD code for Richardson number 0.001–1000 and Reynolds number 10–200, considering a baffle height of up to 80% of enclosure height and air as working fluid. The flow and heat transfer characteristics have been analyzed using energy flux vectors, isotherms, averaged Nusselt number, and streamlines. The results show remarkable enhancement of heat transfer in the mixed convection regime in the presence of baffle.read more
Citations
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Analysis of heat transfer and pumping power for bottom-heated porous cavity saturated with Cu-water nanofluid
TL;DR: In this article, the analysis of a typical system is demonstrated considering bottom-heating, porous medium and Cu-water nanofluid, and the results reveal that the heat transport of base liquid is greatly influenced by these parameters.
Journal ArticleDOI
Enhanced convective heat transfer in lid-driven porous cavity with aspiration
TL;DR: In this paper, a two-sided lid-driven porous cavity under differential heating, which is expanded into possible four (assisting, opposing, upward and downward) flow configurations, is explored.
Journal ArticleDOI
Oriented magnetic field effect on mixed convective flow of nanofluid in a grooved channel with internal rotating cylindrical heat source
TL;DR: In this paper, the influence of oriented magnetic field on mixed convection flow of water-based nanofluid inside a grooved channel with a rotating heat source is numerically investigated.
Journal ArticleDOI
Thermal management of heating element in a ventilated enclosure
TL;DR: In this article, the entire heating element was divided into multiple equal segments and positioned appropriately on vertical side walls, namely at bottom, middle or top location. And the performance analyses of segmental heating and whole heating were conducted for different Richardson number (0.01-100) and Reynolds number (50-200).
Journal ArticleDOI
Heatlines and other visualization techniques for confined heat transfer systems
TL;DR: In this article, an effort has been made to collate visualization techniques in literature for convective heat transfer system like, heatline, energy streamlines, energy flux vectors, proper orthogonal decomposition (POD), Poincare map etc.
References
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Journal ArticleDOI
Energy flux vectors as a new tool for convection visualization
TL;DR: In this article, a combination of numerical and analytical tools is used to show that, in two-dimensional space, heatlines and energy streamlines are effectively the same, and the energy flux vectors are tracing both of them accurately.
Journal ArticleDOI
Mixed convection heat transfer in ventilated cavities with opposing and assisting flows
A. Raji,M. Hasnaoui +1 more
TL;DR: In this paper, the Navier-Stokes equations with the Boussinesq approximation were used for mixed convection heat transfer in ventilated cavities submitted to a constant heat flux.
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Computational analysis of mixed convection in a channel with a cavity heated from different sides
Md. Mustafizur Rahman,Md. Mustafizur Rahman,Hakan F. Öztop,Hakan F. Öztop,Nasrudin Abd Rahim,Rahman Saidur,Khaled Al-Salem,N. Amin,Mohammad Mamun,Amimul Ahsan +9 more
TL;DR: In this article, the authors performed a computational work to analyze the heat transfer, temperature distribution and flow field in a channel with a cavity heated from different sides, and found that the highest heat transfer is obtained when the isothermal heater is located at the right vertical wall.
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An experimental study on mixed convection in a horizontal rectangular channel heated from a side
Chie Gau,Y. C. Jeng,C. G. Liu +2 more
TL;DR: In this article, the effect of the Reynolds number and the buoyancy parameter on the heat transfer in a horizontal rectangular channel heated from a side is studied, where the channel is made of two vertical parallel plates with one of the plates heated uniformly and the opposite plate well insulated.
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Numerical Predictions of Heat Transfer and Flow Structure in a Square Cross-Section Channel with Various Non-Spherical Indentation Dimples
TL;DR: In this paper, the authors employed arrays of different shapes of surface dimples to determine the most optimal configurations for augmenting surface heat transfer rates, as pressure drop penalties are minimized, where the dimples in these arrays are aligned with each other, as they are located on one surface of a square cross-section channel in six different streamwise rows.