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RISS 인기검색어
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- 저자 : 홍주형(Joo-Hyoung Hong) (검색결과 2 건)
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김군홍(Gun-Hong Kim),홍주형(Joo-Hyoung Hong),박춘수(Chun-Su Park),이명훈(Myung-Hoon Lee),전완호(Wan-Ho Jeon) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
Continuous casting process is widely used for making mid stage of manufactured steel product Characteristics of steel flow in the mold is very important for mold design and SEN(Submerged Entry Nozzle) and Using CFD analysis, numerical approach to molten steel flow can be very useful in understanding its flow characteristics in the mold and also make us easily understand growing of solidification shell thickness near mold wall. This study was done for predicting solidification shell thickness in the beam blank model for continuous casting of steel, using commercial FVM Cartesian Solver, STREAM V6 For considering turbulent flow, the low Reynolds number κ-ε model was used. solidification of molten steel is calculated through the temperature recovery method. And this solidification model was also applied to benchmark cases for validating with experimental and numerical results of other researchers.
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전방 십자 인대 손상 환자에서 인대 재건술 후 정상군과의 보행 양상 비교
이광진,변기용,김봉옥,정현태,홍주형 ( Kwang Jin Rhee,Ki Yong Byun,Bong Ok Kim,Hyun Tae Jung,Joo Hyoung Hong ) 대한슬관절학회 1996 대한슬관절학회지 Vol.8 No.2
Patients with anterior cruciate ligament deficiency typically do not have quadriceps muscle activity during stance and this gait pattem has heen termed quadriceps avoidance gait. We performed physical examination and computerized 3-dimensional motion analysis on 7 normal controls and 7 patients who had anterior cruciate ]igament reconstruction by having the patients walking in 3 different walking velocity, I, e, a self- selected walking velocity which the patients felts comfortable, a velocity set a metronome with a frequency of 108 per minute, and a fast velocity (the norrnal controls walk with a frequency of 126 per minute, the patients walle as fast as possible.) All the 7 patients were male and the average age was 32.1 years. The averge follow up duration after operation was 21.0 months. The measured average points by the modified I.arson scoring scale was 83.14 and the results were 1 excellent, 5 good and 1 fair. In all patients, limping was rarely observed and iitlle Jimitation was observed in stepping, squatting and running. All the patients consplained mild discomfort on the knee joint during exercise. There were also no limitation of range of motion on the knee joint. In all patients. On gait analysis using 3-dimensional motion analysis system, exter- nal flexion mornent of the injured knee joint was decreased compare to normal controls and ivas more clccie,ised when the patients walked in a t'aster walking velocity during the, midstance and the loading response phases. However net external fle.xion moment of the knee joints implying the activity of quadriceps euicle was ohserved. In surnmary, gait analysis using 3-dimensional motion analysis system may help us to evaluate the. Present state, objectively and to anticipate the prognosis of the patients who had anterior cruciate ligament reconstruction.
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