Issue |
Mechanics & Industry
Volume 21, Number 4, 2020
|
|
---|---|---|
Article Number | 410 | |
Number of page(s) | 31 | |
DOI | https://doi.org/10.1051/meca/2020028 | |
Published online | 15 June 2020 |
Regular Article
Effective factors on thermal conductivity of stochastic structures open cell metal foams
Mechanical Engineering Department, Hormozgan University, Bandar Abbas, Iran
* e-mail: miladsaljooghi10@gmail.com
Received:
7
May
2019
Accepted:
12
March
2020
Effective thermal conductivity (ETC) is a considerable thermo-physical property in design, manufacturing, and usage of multifunctional equipment that benefit cellular structures such as open-cell metal foams. An accurate understanding of key parameters effecting on ETC is classified by: Analytical, Numerical and Experimental approaches. In this study, a comprehensive investigation based on mentioned approaches is presented and a comparison between various factors affecting ETC including porosity, pore size, temperature, pressure and shape factor is made. Porosity and pore size, as main morphological features of open-cell metal foams, indicate structural characterization of them. Increase of porosity and pore size resulted decrease of ETC. The temperature effects on ETC in case of temperatures lower than 250 °C is ignorable although for temperature higher than 500 °C with change of heat transfer mechanism temperature plays a primary role in determining ETC. Few studies have been made on pressure parameter that illustrated its effect on ETC is insignificant. Multiple manufacturing methods produce different topological structures so; the influence of shape factor on ETC requires more efforts to reach a better understanding. Finally, applicable techniques for measuring ETC are briefly discussed.
Key words: Effective thermal conductivity / open cell / metal foam / pore size / porosity / shape factor
© AFM, EDP Sciences 2020
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.