Melting of nano‐enhanced phase change material in a cavity heated sinusoidal from below: Numerical study using lattice Boltzmann method

Natural convection and melting of ice as a phase change material dispersed with copper nanoparticles are numerically investigated. Square cavity filled with nano‐mixture (Cu−ice) subjected to sinusoidal temperature distributions from the hot bottom boundary. The phase change process and heat transfe...

Full description

Saved in:
Bibliographic Details
Published in:Heat transfer (Hoboken, N.J. Print) N.J. Print), 2022-09, Vol.51 (6), p.5952-5970
Main Authors: Laouer, Abdelghani, Al‐Farhany, Khaled
Format: Article
Language:English
Subjects:
lattice Boltzmann method
melting
nanoparticles
natural convection
NePCM
rectangular enclosure
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Natural convection and melting of ice as a phase change material dispersed with copper nanoparticles are numerically investigated. Square cavity filled with nano‐mixture (Cu−ice) subjected to sinusoidal temperature distributions from the hot bottom boundary. The phase change process and heat transfer are formulated and solved using the enthalpy‐based lattice Boltzmann method. Home‐built numerical code is developed and validated. The effect of Rayleigh number (Ra = 104, 105, and 106) and copper nanoparticle concentration (ϕ = 0%, 1%, 3%, and 5%) on the flow characteristics and thermal performance of NePCM during the melting process is examined. According to the numerical results, the melting and charging times decrease by increasing the Rayleigh number. It is also observed that increasing the volume fraction of nanoparticle decrease melting time by up to 10%.
ISSN:2688-4534
2688-4542
DOI:10.1002/htj.22576