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김석범,백세진,임덕재,최해윤,이상섭,박종호 한국에너지학회 1999 에너지공학 Vol.8 No.2
한국표준원전의 원자로용기 단열재 설치시 설계인자에 대한 수치해석적 연구를 전산 유체유동 코드인 FLUENT를 이용하여 해석하였다. 단열재 두께 및 원자로용기 벽과 단열재의 내부표면간의 공간간격에 대한 인자에 대해서 연구를 수행했다. 또한 단열재 설치시 단열재판넬 사이의 틈새 간격 때문에 발생하는 chimney effect으로 인한 단열재의 성능저하를 평가하였다. 수치해석 결과 최적의 공간 간격 및 단열재 두께를 얻을 수 있었다. The design parameter of the reactor vessel insulation for the Korea Standard Power Plant has been studied numerically. The heat loss from the reactor vessel through the insulation is analysed by using the computational fluid dynamics code, FLUENT. Parametric study has been performed on the air gap width between the reactor vessel wall and the inner surface of the insulation, and on the insulation thickness. Also evaluated is the performance degradation due to the chimney effect caused by gaps between the panels during the installation of the insulation system. From the analysis results, the optimal air gap width and the optimal insulation thickness are obtained.
이상섭(Sang-Sud Lee),유성연(Seng-Yeon yOO),김병채(Byeong-Chae Kim),김은기(Eun-Kee Kim),임덕재(Duck-Jae Lim),정장규(Chang-Kyu Chung),김석벙(Seoung-Beom Kim) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
Naphthalene sublimation technique is used to investing the average and local heat transfer from the circular rod, and to determine the average and local heat transfer from the circular rod with and without squarc wing type mixing vane in axial flow. The experiments are performed for a circular rod and flat plate with and without mixing vane in wind tunnel. In comparison with flat plate and circular rod in axial flow, averaged Nusselts namber is increased 2 times as the increase of Reynolds namber with mixing vane. Longitudinal vortex induced by square wing type has the stronger vortex strength. so square wing type vortex generator shows an effect in downstream.