Journal of the Computational Structural Engineering Institute of Korea (한국전산구조공학회논문집)

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
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Determination of the Frozen Penetration Depth of a Freezing Soil Medium including a Pipeline in a Closed System

파이프라인이 매설된 폐쇄형 동결토의 동결심도 결정

  • 송원근 (한국시설안전기술공단 기술개발지원실)
  • Published : 2004.12.01
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Abstract

The study was focused on the development of computational scheme in three dimensional configurations by applying effective heat capacity model to the numerical procedure in order to predict the temperature profiles of a buried pipeline and the frozen penetration depth(FPD) of a freezing soil medium. To realize this, the investigator conducted the unsteady state heat transfer analysis, using the commercial code ABAQUS, for the freezing granite soil medium including a pipeline in a closed system. The proposed model took into consideration the phase change effect of in situ pore water in the frozen fringe. The comparison of results obtained by the proposed model and the actual performances was valuable in establishing a level of confidence in the application of introduced theory.

본 연구는 동결토의 동결심도 및 매설된 파이프라인의 온도분포를 예측하기 위하여 유효열용량 개념 반영한 수치해석 모델의 개발에 초점이 맞추어져 있다. 이를 위하여 저자는 사용코드인 ANAQUS를 활용하여 파이프라인이 매설된 폐쇄형 시스템의 화강 동결토에 대하여 비정상 열전달 수치해석을 수행하였다. 제안된 수치해석 모델은 Frozen Fringe에서 간극수의 상변화 효과가 반영되었다. 제안된 수치해석 모델과 실내 실험으로부터 얻어진 결과들을 비교함으로써 유효열용량 모델의 적용성을 검증하였다.

Keywords

References

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