... = 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...

...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...

...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...

...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...

...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...

...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...

... 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...

... 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...

... 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...

... 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...

...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...

... 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...

...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...

...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...

...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...

..., 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...

... 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...

...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...

... 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...

...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...