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박홍철,변기택,곽호영,Park, Hong-Chul,Byun, Gi-Taek,Kwak, Ho-Young 대한기계학회 2003 大韓機械學會論文集B Vol.27 No.9
The maximum temperature limit at which liquid boils explosively is called the superheat limit of liquids. The superheat limits of hydrocarbon liquids and their mixtures were measured by the droplet explosion technique. Also the fully evaporated droplet at the superheat limit and subsequent bubble evolution from the fully evaporated droplet were visualized. The pressure wave emanating from the evaporating droplet and subsequent bubble evolution process were measured by a piezoelectric transducer.
양협(Hyup Yang),변기택(Gi-Taek Byun),권용호(Yong-Ho Kwon),곽호영(Ho-Young Kwak) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
The cost structure of the CGAM system, a predefined cogeneration system suggested to unify the different<br/> methodologies of thermoeconomic analysis, was investigated by using a thermoeconomic method called<br/> MOPSA(Modified Productive Structure Analysis). An emphasis has been specially put on how the cost<br/> structure of the system is affected by the chosen level of aggregation that specifies the subsystems. It has<br/> been found that the unit cost of products is dependent on the chosen level of aggregation of the system only<br/> when one consider the negentropy flow as one of the parameters to determine the unit cost of products.
강상우(Sarng Woo Karng),변기택(Gi-Taek Byun),곽호영(Ho-Young Kwak) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
The bubble behavior and the radiation mechanism from a laser-induced bubble have been studied<br/> theoretically. The calculated time dependent bubble radius is in good agreement with observed ones. The half<br/> width of the luminescence pulse at the collapse point, which was calculated with an assumption of black body<br/> source turned out to be good agreement with observed value of several nanoseconds.