http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
노용규 空軍士官學校 1999 論文集 Vol.43 No.-
The hot-wire anemometer is used to measure subsonic two-dimensional transitional boundary layer on the smooth and rough flat plate. Both mean velocity and fluctuation velocity are measured in the whole flat plate. The frequency analysis about laminar boundary layer is carried to observe growth rate of turbulence energy. The intermittency factor(the fraction time while the flow remains turbulent) is calculated in the natural boundary layer and forced(laminar reattachment flow and turbulent reattachment flow) one. In addition, the similarity of intermittency development as well as that of mean and fluctuation velocity arhe also found.
김재훈,노용규,전의식,이종현 한국수소및신에너지학회 2011 한국수소 및 신에너지학회논문집 Vol.22 No.4
A fuel cell vehicle using a polymer electrolyte membrane fuel cell (PEM FC) as power source produces electric power by consuming the fuel, hydrogen. The unconsumed hydrogen is recirculated and reused to gain higer stack efficiency and to maintain the humidity in the anode side of the stack. So it is needed considering fuel efficiency to recirculated hydrogen. In this study, the indirect hydrogen recirculation flow rate measurement method for fuel cell vehicle is presented. By modeling of a convergent nozzle ejector and a hydrogen recirculation blower for the hydrogen recirculation of a PEM FC, the hydrogen recirculation flow rate was calculated by means of the mass balance and heat balance at Anode In/Outlet.