A combined experimental and computational study of phase-change dynamics and flow inside a sessile water droplet freezing due to interfacial heat transfer

2021 ◽  
Vol 180 ◽  
pp. 121803
Author(s):  
Victor Voulgaropoulos ◽  
Mohammadreza Kadivar ◽  
Mohammad Ardekani Moghimi ◽  
Mohamed Maher ◽  
Hameed Alawadi ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Phase Change ◽  
Water Droplet ◽  
Computational Study ◽  
Interfacial Heat Transfer ◽  
Change Dynamics

Research on the non-eutectic phase-change dynamics with heat transfer and component diffusion

2019 ◽  
Vol 156 ◽  
pp. 230-236 ◽  
Author(s):  
Luteng Zhang ◽  
Zaiyong Ma ◽  
Yapei Zhang ◽  
G.H. Su ◽  
Wan Sun ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Phase Change ◽  
Eutectic Phase ◽  
Change Dynamics

scholarly journals CFD and Experimental Analysis of Phase Change Material Behaviour Encapsulated in Internally Finned Spherical Capsule

2019 ◽  
Vol 128 ◽  
pp. 01002
Author(s):  
G. Kumaresan ◽  
R. Santosh ◽  
H. Revanth ◽  
G. Raju ◽  
S. Bhattacharyya
Keyword(s):  
Heat Transfer ◽  
Phase Change ◽  
Phase Change Material ◽  
Heat Transfer Rate ◽  
Transfer Rate ◽  
Computational Study ◽  
Solidification Process ◽  
Transition Process ◽  
Spherical Capsule ◽  
Change Material

Phase change material (PCM) based Thermal Energy Storage (TES) system is a proven technology to store/release a large amount of energy as latent heat during the phase transition process. In spite of the advantages, a major weakness with PCMs is their low thermal conductivity in both solid and liquid phases which seriously affects the heat transfer rate. Over the past two decades various efforts have taken place to enhance the heat transfer rate during the melting/solidification process of phase change material (PCM) encapsulated in various shape of containers. However, very few attempts have been made on accounting the heat transfer augmentation in internally finned spherical capsule. In the present study, CFD analysis is carried out to explore and report the effect of fin orientation on heat transfer enhancement of a paraffin PCM filled in an internally finned spherical capsule. Keeping the same surface area of fin but oriented differently (orthogonal and circumferential) in spherical capsule is undertaken for the computational analysis. In addition, spherical capsule with no fin configuration is alsoconsidered in the present analysis to compare with finned configuration results. The CFD results showed that the orthogonally finned spherical capsule resulted in appreciable reduction in total time takenfor complete melting/solidification process than the circumferential fin and no fin configuration. Thesame computational study is performed experimentally in order to validate the CFD results.

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