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기공률에 따른 발포 알루미늄의 열전달 성능 연구

Title
기공률에 따른 발포 알루미늄의 열전달 성능 연구
Other Titles
A study on the heat transfer performance of aluminum foam by pore density
Author
김태원
Keywords
발포 알루미늄; 기공률; 고체 열전도; 유체 열전도; 유효 열전도율; 공학; Aluminum foam; Pore density; Solid conduction; Fluid conduction; Effective thermal conductivity; Engineering
Issue Date
2013-12
Publisher
대한기계학회 / The Korean Society of Mechanical Engineers
Citation
대한기계학회 춘추학술대회, 2013, 2013(12), p.2860-2865(6쪽)
Abstract
Heat transfer performance of an aluminum foam by porosity was investigated. Thermal conductivity was measured by the relative comparison technique which is one of the KS standard thermal conductivity measuring methods. Based on experimental results, modified scaling relationship model, respectively determined from the solid and fluid conduction mechanisms corresponding to the metal-wall and air, was suggested to represent the porosity effect on heat transfer property. By evaluating the effective thermal conductivity of the aluminum foam with pore density of 0.87, the existing scaling relationship model showed 3.83 W/m·K, and newly developed model was 1.14 W/m·K. Based on the prediction with experimental data of 1.40 W/m·K for the case, it was confirmed that the modified scaling relationship model described much more effectively the heat transfer property of the material.
URI
http://www.dbpia.co.kr/Journal/ArticleDetail/NODE02366060http://hdl.handle.net/20.500.11754/56182
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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