http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
송치성 한국마린엔지니어링학회 1993 한국마린엔지니어링학회지 Vol.17 No.4
It has been a principle research topic on the diesel engine development to increase the efficiency and the performance of engine to satisfy the user's needs for high reliability and durability. However, recently with the worldwide concerns at the global climate change and environmental protection, the main target in the diesel engine research has been changed to solve the exhaust emission problem in order to satisfy the strict emission regulations. To reduce the pollutant for the diesel engine, the researchs on the combustion chamber is the most important and has to be performed first of all. The diesel fuel injection system plays major role to air-fuel mixing process and influences engine output, themal efficiency, reliability, noise, and emissions. The experimental studies were conducted by varying the various parametric conditions and the results were campared with the computation and calculated results by using the fuel injection simulation program developed during previous research. From the experiments, the matching technique of a fuel injection pump and nozzle was conducted to understand under the various parametric conditions. Also, the relations between needle lift and wave propagation characteristics in high pressure pipe were examined. The basic design data from the experimentations and computation works would be applied to actual design works of diesel fuel injection system.
원통형 용기에 담긴 탈지분유 용액의 진공동결건초 : 실험결과와 해석결과의 비교연구
송치성,남진현,김찬중,노승탁,Song, Chi-Seong,Nam, Jin-Hyeon,Kim, Chan-Jung,No, Seung-Tak 대한기계학회 2002 大韓機械學會論文集B Vol.26 No.2
A vacuum freeze drying experiment of skim milk solution in a cylindrical container is conducted to investigate the multi-dimensional drying characteristics of the process during the primary drying stage. Temperature histories at several positions are measured under the same process condition that is carefully controlled. Then the measured temperature histories at different positions are combined to produce instantaneous temperature distribution fields inside the cylindrical container. Along with the temperature measurement, the mass reduction history of the skim milk solution is also measured. From the measured temperature distribution curved configurations of sublimation interfaces and 2-dimensional heat transfer is inferred. The freeze drying under the present experimental setup is simulated with a calculation program that is based on a finite volume method with a moving grid system. Good agreements between the numerical and experimental results are observed. The present experimental results and the numerical approaches can be useful information in developing the analysis tools for practical vacuum freeze drying processes.
송치성 대한영상의학회 1989 대한영상의학회지 Vol.25 No.4
We experienced a rare case of intraductal (common hepatic duct) hepatocellular carcinoma. Review of the literature disclosed 30 cases or less in which common duct involvement was a predominent clincal feature. Well demarcated ovoid filling defect mass in CHD without parenchymal tumor mass was noted in ultrasound PTC& CT study . The liver was cirrhotic but a-fetoprotein level was normal. Differential diagnosis especially with Klatskin tumor is important and thought to be possible
송치성,김재형,손상호,Song, Chi-Seong,Kim, Jae-Hyeong,Son, Sang-Ho 대한기계학회 2011 기계저널 Vol.51 No.7
이 글에서는 한국기계연구원 원자력산업기기연구센터에서 수행하고 있는 원전기기 성능시험을 위한 설비 및 기술개발과 원전기기의 기기검증(Equipment Qualification) 등의 업무에 대해 소개하고자 한다.
디젤엔진 연료계통의 유동 및 압력 변동특성에 관한 이론적 연구
송치성 한국마린엔지니어링학회 1993 한국마린엔지니어링학회지 Vol.17 No.3
Combustion phenomenon in diesel engine is mainly governed by characteristics of fuel injection and fuel spray system affected by its dimensions and operating condition. Fuel supply system is consisted of fuel injection pump, high pressure pipe and injection nozzle. In order to develope the more economical diesel fuel injection system, it is in need to carryout the fairly wide range experiments, which is quite impossible. Therefore, theoretical analysis for the numberous parameters is powerful method in this case. In the present study, equations of continuity of fuel oil in fuel injection system are solved to obtain the flow and pressure variation in diesel fuel system affected by injection pump speed, plunger diameter, pipe length and nozzle opening pressure.
송치성 대한영상의학회 1983 대한영상의학회지 Vol.19 No.1
About 20 or more cases of seminal vesicle cyst were reported up to nowadays, but CT findings are not yet descirbed. Seminal visicle cyst is often associated with ipsilateral renal agenssis, and the mechanism of development is based on embryogenesis. A 26 year old male was confirmed as seminal vesicle cyst in S.N.U.H. in Nov. 1981. CT of the seminal vesicle cyst revealed huge, globular and homogeneous mass with well-circumscribed smooth margin between urinary bladder and rectum. A dilated tubular structure was also found lateral to the huge cystic mass. The ipsilateral kidney was not found in any level of abdomen from the diaphragmatic dome to the symphisis pubis.
고속 PIV계측에 의한 실린더 근접후류 공진 유동 가시화
송치성 한국마린엔지니어링학회 2001 한국마린엔지니어링학회지 Vol.25 No.6
Vortex lock-on or resonance behind a circular cylinder is visualized using a time-resolved PW when a single frequency oscillation is superimposed on the mean incident velocity. For vector processing, a cross-correlation algorithm in conjunction with a recursive correlation and interrogation window shifting techniques is used. Measurements are made of the Karmas and streamwise vertices in the wake-transition regime at Reynolds lumber 360. When lock-on occurs, the vortex shedding frequency is found to be half the oscillation frequency as expected from previous experiments. At the lock-on state, the Karman vortices are observed to be more disordered by the increased strength and spanwise wavelength of the streamwiee vortices, which lead? to a strong three-dimensional motion.