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Keywords: Melting
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Journal Articles
Article Type: Research-Article
J. Heat Transfer. December 2021, 143(12): 122901.
Paper No: HT-21-1042
Published Online: October 11, 2021
... = specific heat, J kg −1 K −1 D = diameter of the tube, m D i = cell diameter, m f ′ = friction factor f m = local melt fraction G = mass flux, kg m −2 s −1 h = heat transfer coefficient, W m −2 K −1 h sen = sensible enthalpy, J...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. June 2020, 142(6): 062401.
Paper No: HT-19-1692
Published Online: April 8, 2020
...Mohammad Parsazadeh; Xili Duan This research investigates the melting rate of a phase change material (PCM) in the presence of Rayleigh–Benard convection. A scaling analysis is conducted for the first time for such a problem, which is useful to identify the parameters affecting the phase change...
Journal Articles
Article Type: Melting And Solidification
J. Heat Transfer. June 2012, 134(6): 062301.
Published Online: May 2, 2012
...Mehmet Akif Ezan; Aytunc Erek This paper presents experimental investigations of charging ( solidification ) and discharging ( internal/external melting ) periods of an ice-on-coil type latent heat thermal energy storage system. Experimental investigations are performed for various constant heat...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. April 2012, 134(4): 042101.
Published Online: February 16, 2012
...P. S. Wei; C. L. Lin; H. J. Liu; T. DebRoy The molten pool shape and thermocapillary convection during melting or welding of metals or alloys are self-consistently predicted from scale analysis. Determination of the molten pool shape and transport variables is crucial due to their close...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. April 2012, 134(4): 042601.
Published Online: January 26, 2012
...R. R. Kairi; P. V. S. N. Murthy In this paper, we investigate the influence of melting on mixed convection heat and mass transfer from vertical flat plate in a non-Newtonian fluid-saturated non-Darcy porous medium including the prominent Soret effect. The wall and the ambient medium are maintained...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. January 2012, 134(1): 012401.
Published Online: November 21, 2011
...Jing Huang; Yuwen Zhang; J. K. Chen To obtain more in-depth knowledge about the microscopic process during laser sintering, phase change processes including melting, evaporation, and resolidification during the irradiation of femtosecond laser on nanosized gold particles were simulated. The effects...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. December 2011, 133(12): 121702.
Published Online: October 6, 2011
... as long as the MEPCM particles experience phase change. The presence of MEPCM in the working fluid slows the growth of the thermal boundary layer and extends the thermal entry length. The local heat transfer coefficient strongly depends on the corresponding location of the melting zone interface. The heat...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. June 2011, 133(6): 062301.
Published Online: March 8, 2011
... inside the cavity at that moment. The solution is illustrated with numerical examples. 07 05 2010 27 01 2011 08 03 2011 08 03 2011 heat conduction melting shapes (structures) temperature distribution heat conduction moving boundary Stefan problem cylindrical layer...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. March 2011, 133(3): 031010.
Published Online: November 16, 2010
... that include phase changes such as melting of fat and water and evaporation/condensation of water. Evaporation/condensation is considered to be distributed throughout the domain and is described by a novel nonequilibrium formulation whose parameters have been discussed in detail. Two complex food processes...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. March 2011, 133(3): 031003.
Published Online: November 15, 2010
... coupled with interface tracking method is developed to describe the ultrafast melting, vaporization, and resolidification processes. To deal with the large span in time scale, variable time steps are adopted. A laser pulse train consists of several pulse bursts with a repetition rate of 0.5–1 MHz. Each...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. March 2011, 133(3): 031002.
Published Online: November 15, 2010
...Kaushik Saha; Swetaprovo Chaudhuri; Baki M. Cetegen A comprehensive model based on finite volume method was developed to analyze the heat-up and the melting of ceramic particles injected into a microwave excited laminar air plasma flow field. Plasma flow field was simulated as a hot gas flow...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. January 2011, 133(1): 011005.
Published Online: September 27, 2010
... heat transfer melting phase change materials probes surgery temperature distribution inverse problem lethal temperature cooling rate frozen volume Cryosurgery is a medical technique involving the application of extremely low (cryogenic) temperatures with an aim to destroy abnormal...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. June 2010, 132(6): 062301.
Published Online: March 24, 2010
...Zhen Yang; Suresh V. Garimella Melting of phase change materials (PCMs) embedded in metal foams is investigated. The two-temperature model developed accounts for volume change in the PCM upon melting. Volume-averaged mass and momentum equations are solved, with the Brinkman–Forchheimer extension...
Journal Articles
Article Type: Technical Briefs
J. Heat Transfer. January 2010, 132(1): 014501.
Published Online: October 23, 2009
...V. V. Sobha; R. Y. Vasudeva; K. Ramakrishna; K. Hema Latha Thermal dispersion due to local flows is significant in heat transfer with forced convection in porous media. The effects of parametrized melting ( M ) , thermal dispersion ( D ) , inertia ( F ) , and mixed convection (Ra/Pe...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. August 2009, 131(8): 082301.
Published Online: June 5, 2009
...David MacPhee; Ibrahim Dincer This study deals with the process of melting in some typical encapsulated ice thermal energy storage (TES) geometries. Cylindrical and slab capsules are compared with spherical capsules when subjected to a flowing heat transfer fluid (HTF). The effect of inlet HTF...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. August 2009, 131(8): 082401.
Published Online: June 5, 2009
..., the peak electron temperature increases with a decrease in the thickness of the gold film. Both film thickness and laser fluence significantly affect the melting time. For a fluence of 1000 J / m 2 , and a pulse duration of 75 fs, gold films of thickness smaller than 100 nm melt before reaching electron...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. July 2009, 131(7): 072101.
Published Online: May 1, 2009
... between the powder bed and dense material is taken into account. The above conditions correspond to the technology of selective laser melting that is applied to build objects of complicated shape from metallic powder. Complete remelting of the powder in the scanned zone and its good adhesion...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. May 2009, 131(5): 052301.
Published Online: March 20, 2009
...Yuansong Zhao; Wenzhen Chen; Fengrui Sun The problem of contact melting inside an elliptical tube with nonisothermal wall is investigated. A theoretical model, which the inner wall temperature of source varied with angle ϕ , is established by applying film theory. The basic equations of the melting...
Topics: Melting
Journal Articles
Article Type: Research Papers
J. Heat Transfer. November 2008, 130(11): 112101.
Published Online: September 2, 2008
... of PLDM along with the rapid melting and solidification process. Moreover, the interaction between the laser and plasma arc also directly influences the forming quality and precision of the 3D metal components. Therefore, the proposed work is a preliminary attempt to study the transport phenomena...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. June 2008, 130(6): 062401.
Published Online: April 23, 2008
...Yuwen Zhang; J. K. Chen An interfacial tracking method was developed to model rapid melting and resolidification of a freestanding metal film subject to an ultrashort laser pulse. The laser energy was deposited to the electrons near thin film surface, and subsequently diffused into a deeper part...