@Article{cmes.2020.09009,
AUTHOR = {Yongtong Li, Liang Gong, Hui Lu, Dexin Zhang, Bin Ding},
TITLE = {Thermal Modeling and Analysis of Metal Foam Heat Sink with  Thermal Equilibrium and Non-Equilibrium Models},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {123},
YEAR = {2020},
NUMBER = {2},
PAGES = {895--912},
URL = {http://www.techscience.com/CMES/v123n2/38704},
ISSN = {1526-1506},
ABSTRACT = {In the present study, the thermal performance of metal foam heat sink was 
numerically investigated by adopting the local thermal non-equilibrium (LTNE) model 
and local thermal equilibrium (LTE) model. Temperature field distributions and 
temperature difference field distributions of solid and fluid phases were presented.
Detailed thermal performance comparisons based on the LTE and LTNE models were
evaluated by considering the effects of the relevant metal foam morphological and 
channel geometrical parameters. Results indicate that a distinct temperature difference
exists between the solid and fluid phases when the LTNE effect is pronounced. The 
average Nusselt numbers predicted by both the LTE and LTNE models are approaching 
with the increase of porosity, pore density, Reynolds number, large thermal conductivity 
ratio, and large aspect ratio. This is attributed to the significant reduction of the interstitial 
convective thermal resistance between the solid and fluid phases, as a result, the LTE 
model can replace the LTNE model for thermal modeling in these conditions. In addition,
the overall thermal performance assessment of metal foam heat sink is compared with the 
non-porous heat sink, and it shows that the thermal performance factor of metal foam 
heat sink is approximately two times of the non-porous heat sink.},
DOI = {10.32604/cmes.2020.09009}
}