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배관 결빙 과정에서의 상변화 과정과 자연대류현상의 수치적 해석
정기호(GiHo Jeong),안병진(ByungJin Ahn),최병익(ByungIk Choi),김귀순(KuiSoon Kim) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
A numerical analysis is performed in this study to see the characteristics of the ice plug formation and the heat transfer during pipe freezing process. An unsteady three dimensional computer code which solves incompressible Navier-Stokes equations including energy equation has been developed. The computed results for verification including phase interface and flow patterns showed good agreements with previous results. And additional pipe freezing experiments for verification showed that maximum flow rate for the complete plug formation is highly dependent on the pipe diameter and length of jacket containing refrigerant(LN₂). The results of pipe freezing experiments could be also wed as a guideline and to the proper computation.
박영식(Youngsik Park),안병진(Byungjin Ahn),정래혁(Laehyuk Jeong),류성호(Seongho Ryu),김홍희(Honghee Kim) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.11
WASP(Wien Automatic System Planning Package) is utilized to analyze the sensitivity of Loss Of Load Probability(LOLP), WASP-Ⅳ is designed to find the economically optimal generation expansion planning for an electric utility system within user specified constraints.