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Keywords: Rayleigh number
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Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. September 2022, 144(9): 092601.
Paper No: HT-22-1114
Published Online: June 21, 2022
... differential equations (continuity, momentum, and energy) numerically over wide ranges of the relevant dimensionless parameters, namely, Rayleigh number, 10 4 ≤ Ra ≤ 10 8 ; and height to diameter ratio, 0.15 ≤ h/D ≤ 0.95. The detailed behavior of thermal and flow fields is delineated by suitable visualization...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. February 2020, 142(2): 022601.
Paper No: HT-19-1016
Published Online: January 6, 2020
...Omprakash S. Bharti; Devesh Rajan; Arun K. Saha; Malay K. Das The present research proposes an inverse natural convection algorithm for simultaneous estimation of correct values of Prandtl number (Pr) and Rayleigh number (Ra). The inverse problem is formulated as the minimization of appropriate...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. December 2019, 141(12): 122504.
Paper No: HT-19-1129
Published Online: October 8, 2019
... conductance of the sidewalls. The predictions obtained using this model are found to be in good agreement with the corresponding experimentally determined values. e-mail:  madan016@umn.edu 08 03 2019 12 08 2019 08 10 2019 Rayleigh-Bénard convection Nusselt number Rayleigh number...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. December 2013, 135(12): 122501.
Paper No: HT-12-1495
Published Online: October 14, 2013
... (Bn), Rayleigh number (Ra), and Prandtl number (Pr). It has been observed that with the increase in Bingham number, the buoyancy induced fluid circulation and convection effect decreases inside the enclosure. For each Rayleigh number, there correspond a critical Bingham number for which the heat...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Heat And Mass Transfer
J. Heat Mass Transfer. September 2012, 134(9): 092001.
Published Online: June 29, 2012
... been obtained in the form of series expansions in terms of a thermal Rayleigh number, which is based on the temperature of the heated sphere and the medium permeability. The results are exemplified by drawing the streamlines at various times. Of special significance is the emergence of a downward flow...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Heat Mass Transfer. November 2010, 132(11): 112601.
Published Online: August 13, 2010
... with vibration when g ∗ = ω ∗ 2 X 0 ∗ . The analysis for the large Vadasz number scaling indicates that a frozen time approximation is appropriate where the effect of vibration is modeled as small variations in the Rayleigh number definition. Nield , D. A. , and Bejan , A. , 1995 , Convection...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. June 2007, 129(6): 697–704.
Published Online: September 12, 2006
.... However, for large volume fraction ϕ > 2 % , the convective heat transfer coefficient declines due to reduction in the Rayleigh number caused by increase in kinematic viscosity. Also, an empirical correlation for Nu ϕ as a function of ϕ and Ra has been developed, and it is observed...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. July 2007, 129(7): 835–843.
Published Online: July 12, 2006
... of the critical Rayleigh number is calculated as function of amplitude and frequency of modulation, Chandrasekhar number, Taylor number, porous parameter, Prandtl number, and magnetic Prandtl number. It is found that rotation, magnetic field, and porous medium all have a stabilizing influence on the onset...