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A Experimental and Numerical Studies of Thermal Flow Motion in a Geothermal Chamber  

송원근 (한국시설안전기술공단, 기술개발실)
김영진 (한국건설기술연구원, 토질 및 기초연구그룹)
이형일 (서강대학교 기계공학과)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.16, no.3, 2003 , pp. 219-228 More about this Journal
Abstract
Numerical and experimental studies were conducted on the temperature distribution of a buried steel pipe and surrounding granite frozen soils in the closed system. The relationship between unfrozen water content and temperatures was analysed by laboratory test. The thermal conductivity measurements were made to compare the results with a formula presented by Lachenbruch. A steel container model that consists of a freezing chamber and a buried circular steel pipe was built for the laboratory temperature measurements. The time temperature records were measured experimentally, and those records were compared with numerical results obtained from FEM analysis in order to verify the feasibility. The latent heat effect on the granite frozen soils in the numerical study was considered.
Keywords
frozen soil; closed system; finite element approach; latent heat effect;
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