Conjugate solid-liquid phase change heat transfer in heatsink filled with phase change material-metal foam

2020 ◽  
Vol 146 ◽  
pp. 118832 ◽  
Author(s):  
Mohammad Ghalambaz ◽  
Jun Zhang
Keyword(s):  
Heat Transfer ◽  
Liquid Phase ◽  
Phase Change ◽  
Phase Change Material ◽  
Metal Foam ◽  
Phase Change Heat Transfer ◽  
Solid Liquid ◽  
Change Material

Melting heat transfer of a non-Newtonian phase change material in a cylindrical vertical-cavity partially filled porous media

2019 ◽  
Vol 30 (7) ◽  
pp. 3765-3789 ◽  
Author(s):  
Mohammad Ghalambaz ◽  
Kasra Ayoubi Ayoubloo ◽  
Ahmad Hajjar
Keyword(s):  
Heat Transfer ◽  
Phase Change ◽  
Phase Change Material ◽  
Metal Foam ◽  
Governing Equations ◽  
Melting Front ◽  
Content Type ◽  
Porous Layers ◽  
Phase Change Heat Transfer ◽  
Change Material

Purpose This paper aims to investigate melting heat transfer of a non-Newtonian phase change material (PCM) in a cylindrical enclosure-space between two tubes using a deformed mesh method. Design/methodology/approach Metal foam porous layers support the inner and outer walls of the enclosure. The porous layers and clear space of the enclosure are filled with PCM. The natural convection effects during the phase change are taken into account, and the governing equations for the molten region and solid region of the enclosure are introduced. The governing equations are transformed into non-dimensional form and then solved using finite element method. The results are compared with the literary works and found in good agreement. The non-Newtonian effects on the phase change heat transfer and melting front are studied. Findings The results show that the increase of non-Newtonian effects (the decrease of the power-law index) enhances the heat melting process in the cavity at the moderate times of phase change heat transfer. The temperature gradients in porous metal foam over the hot wall are small, and hence, the porous layer notably increases the melting rate. When the melting front reaches the cold porous layer, strong non-linear behaviors of the melting front can be observed. Originality/value The phase change heat transfer of non-Newtonian fluid in a cylindrical enclosure partially filled with metal foams is addressed for the first time.

Transient phase change heat transfer in a metal foam-phase change material heatsink subject to a pulse heat flux

2020 ◽  
Vol 31 ◽  
pp. 101701
Author(s):  
Ahmad Hajjar ◽  
Esmail Jamesahar ◽  
Hassan Shirivand ◽  
Mohammad Ghalambaz ◽  
Roohollah Babaei Mahani
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Phase Change ◽  
Phase Change Material ◽  
Metal Foam ◽  
Transient Phase ◽  
Pulse Heat ◽  
Phase Change Heat Transfer ◽  
Change Material

Numerical Analysis on Solid-Liquid Phase Change Heat Transfer Process between PCM and FCPCM

2013 ◽  
Vol 732-733 ◽  
pp. 37-41
Author(s):  
Qiang Sheng ◽  
Yu Ming Xing
Keyword(s):  
Phase Change ◽  
Phase Change Material ◽  
Metal Foam ◽  
Storage System ◽  
Heat Transfer Process ◽  
Numerical Comparison ◽  
Foam Composite ◽  
Phase Change Heat Transfer ◽  
Solid Liquid ◽  
Change Material

Due to enthalpy-porosity technique, mathematical models of phase change material (PCM) and foam composite phase change material (FCPCM) in two-dimensional rectangular canister were established in the conditions of gravity and natural convection. It solved phase change problems by the enthalpy method coming from computational fluid dynamics. The numerical results show good agreement with reference findings. The numerical comparison between PCM and FCPCM verifies that metal foam can not only enhance the thermal conductivity of the PCMs but also improve the thermal performance of the heat storage system.

STUDY ON SOLIDIFICATION OF PHASE CHANGE MATERIAL IN FRACTAL POROUS METAL FOAM

Fractals ◽  
2015 ◽  
Vol 23 (01) ◽  
pp. 1540003 ◽  
Author(s):  
CHENGBIN ZHANG ◽  
LIANGYU WU ◽  
YONGPING CHEN
Keyword(s):  
Heat Transfer ◽  
Phase Change ◽  
Pore Structure ◽  
Phase Change Material ◽  
Fractal Structure ◽  
Metal Foam ◽  
Porous Metal ◽  
Solid Matrix ◽  
Transfer Model ◽  
Change Material

The Sierpinski fractal is introduced to construct the porous metal foam. Based on this fractal description, an unsteady heat transfer model accompanied with solidification phase change in fractal porous metal foam embedded with phase change material (PCM) is developed and numerically analyzed. The heat transfer processes associated with solidification of PCM embedded in fractal structure is investigated and compared with that in single-pore structure. The results indicate that, for the solidification of phase change material in fractal porous metal foam, the PCM is dispersedly distributed in metal foam and the existence of porous metal matrix provides a fast heat flow channel both horizontally and vertically, which induces the enhancement of interstitial heat transfer between the solid matrix and PCM. The solidification performance of the PCM, which is represented by liquid fraction and solidification time, in fractal structure is superior to that in single-pore structure.

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