Mixed Convection Heat Transfer in a Grooved Channel in the Presence of a Baffle

doi:10.1080/10407782.2014.955359

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Mixed Convection Heat Transfer in a Grooved Channel in the Presence of a Baffle

Journal Article•DOI•

Mixed Convection Heat Transfer in a Grooved Channel in the Presence of a Baffle

Aayush Sharma¹, Pallab Sinha Mahapatra², Nirmal K. Manna¹, Koushik Ghosh¹•Institutions (2)

Jadavpur University¹, Indian Institute of Technology Madras²

12 Feb 2015-Numerical Heat Transfer Part A-applications (Taylor & Francis Group)-Vol. 67, Iss: 10, pp 1097-1118

TL;DR: 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.

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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.

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Journal Article•DOI•

Analysis of heat transfer and pumping power for bottom-heated porous cavity saturated with Cu-water nanofluid

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Nirmalendu Biswas¹, Nirmal K. Manna¹, Priyankan Datta¹, Pallab Sinha Mahapatra²•Institutions (2)

Jadavpur University¹, Indian Institute of Technology Madras²

15 Feb 2018-Powder Technology

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.

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80 citations

Journal Article•DOI•

Enhanced convective heat transfer in lid-driven porous cavity with aspiration

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Nirmalendu Biswas¹, Nirmal K. Manna¹•Institutions (1)

Jadavpur University¹

01 Nov 2017-International Journal of Heat and Mass Transfer

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.

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54 citations

Journal Article•DOI•

Oriented magnetic field effect on mixed convective flow of nanofluid in a grooved channel with internal rotating cylindrical heat source

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Mohammad Mokaddes Ali¹, Md. Abdul Alim², Syed Sabbir Ahmed³•Institutions (3)

Mawlana Bhashani Science and Technology University¹, Bangladesh University of Engineering and Technology², Jahangirnagar University³

01 Feb 2019-International Journal of Mechanical Sciences

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.

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38 citations

Journal Article•DOI•

Thermal management of heating element in a ventilated enclosure

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Nirmalendu Biswas¹, Pallab Sinha Mahapatra, Nirmal K. Manna¹•Institutions (1)

Jadavpur University¹

01 Aug 2015-International Communications in Heat and Mass Transfer

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).

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28 citations

Journal Article•DOI•

Heatlines and other visualization techniques for confined heat transfer systems

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Pallab Sinha Mahapatra¹, Achintya Mukhopadhyay², Nirmal K. Manna², Koushik Ghosh²•Institutions (2)

Indian Institute of Technology Madras¹, Jadavpur University²

01 Mar 2018-International Journal of Heat and Mass Transfer

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.

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22 citations

References

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Book•

Numerical heat transfer and fluid flow

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Suhas V. Patankar

01 Jan 1980

TL;DR: In this article, the authors focus on heat and mass transfer, fluid flow, chemical reaction, and other related processes that occur in engineering equipment, the natural environment, and living organisms.

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Abstract: This book focuses on heat and mass transfer, fluid flow, chemical reaction, and other related processes that occur in engineering equipment, the natural environment, and living organisms. Using simple algebra and elementary calculus, the author develops numerical methods for predicting these processes mainly based on physical considerations. Through this approach, readers will develop a deeper understanding of the underlying physical aspects of heat transfer and fluid flow as well as improve their ability to analyze and interpret computed results.

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21,858 citations

Journal Article•DOI•

Natural convection of air in a square cavity: A bench mark numerical solution

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G. de Vahl Davis¹•Institutions (1)

University of New South Wales¹

01 May 1983-International Journal for Numerical Methods in Fluids

TL;DR: In this paper, the authors used mesh refnement and extrapolation to obtain an accurate solution of the equations describing two-dimensional natural convection in a square cavity with differentially heated side walls.

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Abstract: Details are given of the computational method used to obtain an accurate solution of the equations describing two-dimensional natural convection in a square cavity with differentially heated side walls. Second-order, central difference approximations were used. Mesh refnement and extrapolation led to solutions for 103⩽Ra⩽10 6 which are believed to be accurate to better than 1 per cent at the highest Rayleigh number and down to one-tenth of that at the lowest value.

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2,529 citations

"Mixed Convection Heat Transfer in a..." refers result in this paper

...[24] previously presented code validation against benchmark results of De Valh Devis [25] to investigate the effect of adiabatic and isothermal blocks in a square enclosure undergoing natural convection....
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...Mahapatra et al. [24] previously presented code validation against benchmark results of De Valh Devis [25] to investigate the effect of adiabatic and isothermal blocks in a square enclosure undergoing natural convection....
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Journal Article•DOI•

The “Heatline” Visualization of Convective Heat Transfer

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S. Kimura¹, Adrian Bejan¹•Institutions (1)

University of Colorado Boulder¹

01 Nov 1983-Journal of Heat Transfer-transactions of The Asme

TL;DR: Proposition d'une nouvelle methode de visualisation du transfert de chaleur dans un ecoulement de fluide. Application a la convection naturelle dans une enceinte carree chauffee lateralement

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Abstract: Proposition d'une nouvelle methode de visualisation du transfert de chaleur dans un ecoulement de fluide. Application a la convection naturelle dans une enceinte carree chauffee lateralement

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387 citations

"Mixed Convection Heat Transfer in a..." refers background in this paper

...Kimura and Bejan [26] introduced heat function to include the conductive heat flux as well as convective heat flux, where the net flow of energy becomes zero across each ‘‘constant heat line,’’ similar to the concept of zero flow across streamline....
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Journal Article•DOI•

Mixed convective cooling of a rectangular cavity with inlet and exit openings on differentially heated side walls

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S. Singh¹, Muhammad A. R. Sharif¹•Institutions (1)

University of Alabama¹

01 Aug 2003-Numerical Heat Transfer Part A-applications

TL;DR: In this article, a numerical study is conducted to investigate mixed convective cooling of a two-dimensional rectangular cavity with differentially heated side walls, where cold fluid is blown into the cavity from an inlet in the side wall of the cavity and is exited through an outlet in the opposite side wall.

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Abstract: A numerical study is conducted to investigate mixed convective cooling of a two-dimensional rectangular cavity with differentially heated side walls. The horizontal walls are assumed to be adiabatic. Cold fluid is blown into the cavity from an inlet in the side wall of the cavity and is exited through an outlet in the opposite side wall. This configuration of mixed convective heat transfer has application in building energy systems, cooling of electronic circuit boards, and solar collectors, among others. The objective of the research is to optimize the relative locations of inlet and outlet in order to have most effective cooling in the core of the cavity by maximizing the heat-removal rate and reducing the overall temperature in the cavity. Various placement configurations of the inlet and outlet are examined for a range of Reynolds number and Richardson number. For a given Reynolds number, the Richardson number is varied from 0, which represents pure forced convection, to 10, which implies a dominant b...

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145 citations

"Mixed Convection Heat Transfer in a..." refers background or methods in this paper

...1 of [19] (also shown in the inset of Figure 2 of the present problem) is taken for Re1⁄4 100....
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...It is consistent with earlier studies carried out by Manca et al. [16, 17] and Singh and Sharif [19]....
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...In [18, 19], differentially heated rectangular enclosure was considered without channel and without baffle....
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...Later, Singh and Sharif [19] extended this study to identify the best inlet and outlet placement configuration out of six configurations to obtain a higher efficiency of cooling, while maintaining low temperatures inside the bulk of the cavity....
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...In addition, here another validation is incorporated, especially on mixed convection considering the work of Singh and Sharif [19] as presented in Figure 2....
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Journal Article•DOI•

Effect of heated wall position on mixed convection in a channel with an open cavity

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Oronzio Manca, Sergio Nardini, K. Khanafer¹, Kambiz Vafai¹•Institutions (1)

University of California, Riverside¹

01 Feb 2003-Numerical Heat Transfer Part A-applications

TL;DR: In this article, the authors studied mixed convection in an open cavity with a heated wall bounded by a horizontally insulated plate and showed that the maximum temperature values decrease as the Reynolds and the Richardson numbers increase.

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Abstract: Mixed convection in an open cavity with a heated wall bounded by a horizontally insulated plate is studied numerically. Three basic heating modes are considered: (a) the heated wall is on the inflow side (assisting flow); (b) the heated wall is on the outflow side (opposing flow); and (c) the heated wall is the horizontal surface of the cavity (heating from below). Mixed convection fluid flow and heat transfer within the cavity is governed by the buoyancy parameter, Richardson number (Ri), and Reynolds number (Re). The results are reported in terms of streamlines, isotherms, wall temperature, and the velocity profiles in the cavity for Ri=0.1 and 100, Re=100 and 1000, and the ratio between the channel and cavity heights (H/D) is in the range 0.1-1.5. The present results show that the maximum temperature values decrease as the Reynolds and the Richardson numbers increase. The effect of the H/D ratio is found to play a significant role on streamline and isotherm patterns for differentheating configurations....

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132 citations

"Mixed Convection Heat Transfer in a..." refers background or methods in this paper

...In [16], both assisting and opposing flow situations were numerically analyzed for Re1⁄4 100, 1000, and Ri1⁄4 0....
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...[16, 17] studied mixed convection by applying constant heat flux at one wall of a U-shaped open cavity, in the context of electronic cooling....
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