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Keywords: correlation
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Journal Articles
Article Type: Research-Article
J. Heat Transfer. September 2021, 143(9): 092601.
Paper No: HT-21-1225
Published Online: July 19, 2021
.... Effectiveness of the ribs ( ε rib ) and critical Rayleigh numbers (Ra cr ), corresponding to ε rib = 1, are also calculated. Ribs are more effective in heat dissipation at low Ra and P/D and high R/D. A correlation for the average Nusselt number is also developed in this work, which would help design a better...
Includes: Supplementary data
Journal Articles
Article Type: Research-Article
J. Heat Transfer. August 2021, 143(8): 082101.
Paper No: HT-21-1011
Published Online: June 17, 2021
... of hot exhaust gas from the engine in the cargo/naval ships are done inside the IRS system. The objective is to propose correlations for mass entrainment and outlet temperature for the IRS device with conical funnels. The mass intake rate and funnel exit temperature are determined by a set of relevant...
Includes: Supplementary data
Journal Articles
Article Type: Research-Article
J. Heat Transfer. June 2020, 142(6): 061805.
Paper No: HT-19-1707
Published Online: April 27, 2020
...John H. Lienhard, V The laminar and turbulent regimes of a boundary layer on a flat plate are often represented with separate correlations under the assumption of a distinct “transition Reynolds number.” Average heat coefficients are then calculated by integrating across the “transition point...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. June 2019, 141(6): 062501.
Paper No: HT-18-1095
Published Online: April 17, 2019
... Nusselt numbers. The results show that an increase in Rayleigh number or in heat source length increases the temperature in the core of the cavity. The flow structure shows that turbulent natural convection regime is fully developed for Ra = 10 8 . Correlations for mean Nusselt number as a function...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. September 2014, 136(9): 091501.
Paper No: HT-13-1251
Published Online: May 28, 2014
.... Tao. 20 05 2013 04 04 2014 A critical heat flux (CHF) correlation is developed for jet impingement boiling of a single round jet on a flat circular surface. The correlation is valid for submerged jets as well as for free surface jets with Reynolds numbers (Re) between 4000...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. August 2013, 135(8): 082601.
Paper No: HT-12-1503
Published Online: July 10, 2013
..., the availability of analytical predictive tools is still extremely limited. Recently, Hooman and Merrikh [ 28 ] put forth a very interesting effort to obtain Nusselt versus Rayleigh correlations for predicting the data published in Ref. [ 25 ] for the case of natural convection in laterally heated, square...
Journal Articles
Article Type: Heat Transfer Enhancement
J. Heat Transfer. August 2012, 134(8): 081901.
Published Online: May 31, 2012
... an exciting opportunity to significantly reduce the size of thermal management systems in electronic packages. A number of researchers have shown the implementations of synthetic jets on heat transfer applications; however, there exists no correlation to analytically predict the heat transfer coefficient...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. October 2011, 133(10): 101802.
Published Online: August 11, 2011
... channel. The heat transfer coefficient of the louver fin was about twice as high as that of the plane fin. Empirical correlations proposed by previous researchers were compared with the present experimental data. Correlations of j and f factors were proposed for the present experimental data. The j and f...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. April 2011, 133(4): 041601.
Published Online: January 11, 2011
... particles a new correlation is developed for the Nusselt number versus the Reynolds number ( 5 < Re d h < 280 ) and includes the uncertainty bounds. This new correlation compares well with correlations developed by some other researchers for similar spherical particle beds. 11 01 2010 22 09...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. April 2011, 133(4): 041501.
Published Online: January 6, 2011
..., enhancement of up to 27 times that of an unenhanced surface was obtained at a superheat of 8 K and a pressure of 0.2 atm. Dimensional analysis and multiparameter regression are used to develop a heat transfer correlation that relates the boiling heat transfer coefficient to the lamination geometry. 13 09...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. November 2010, 132(11): 112502.
Published Online: August 13, 2010
... on the heat transfer is demonstrated. A correlation that encompasses all the cases studied herein is obtained, in which the Nusselt number depends on the Rayleigh number, which uses the “clear” spacing between fins as the characteristic length, and on the dimensions of the fins and the base. The obtained...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. April 2010, 132(4): 041004.
Published Online: February 18, 2010
...Hee Joon Lee; Dong Yao Liu; Y. Alyousef; Shi-chune Yao Existing databases and correlations in literature on the microchannel pressure drop and heat transfer are reviewed in this paper. From this review, it is found that none of the existing correlations can cover the wide ranges of working fluids...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. January 2010, 132(1): 012503.
Published Online: November 4, 2009
... an individual fin. By decoupling convection from radiation, a dimensional analysis of the results for natural convection is attempted. A correlation presenting the Nusselt number versus the Rayleigh number is suggested, where the “clear” spacing between fins serves as the characteristic length. The free...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. December 2009, 131(12): 121003.
Published Online: October 15, 2009
... tubes and number of studies focused on rectangular channels is relatively small. Although basic triggering mechanisms, which lead to CHF in thin rectangular channels, are similar to that of tubes, applicability of thermal hydraulic correlations developed for tubes to rectangular channels...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. June 2009, 131(6): 061801.
Published Online: March 30, 2009
...-surface multiplier correlations fit the present database with rms relative residuals of 21.1% and 24.4% for j and f multipliers, respectively. Alternatively, stand-alone Colburn j and f correlations give rms relative residuals of 22.7% and 29.1%, respectively. 20 03 2008 01 12 2008 30 03...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. February 2009, 131(2): 021801.
Published Online: December 11, 2008
... pressure-drop measurements, from nine independent laboratories for 126 sample heat exchangers— j - and f -factor correlations are developed to predict the air-side performance of heat exchangers. The database is analyzed, the form of the curve fits is explored, and the predictive performance...
Journal Articles
Article Type: Research Papers: Special Issue On Boiling And Interfacial Phenomena
J. Heat Transfer. August 2006, 128(8): 761–768.
Published Online: January 5, 2006
... m ) on the heat transfer rate, exit solid temperature, and heat transfer coefficient have been studied. An empirical correlation has been proposed for the prediction of heat transfer coefficients based on the present experimental data. The proposed correlation predicts the heat transfer coefficients...