http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
쑨쉰(Sun Xun),이웅엽(Woong Yup Lee),김현수(Hyun Soo Kim),양승덕(Seung Deok Yang),윤준용(Joon Yong Yun) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
The present paper utilized the CFD (computation fluid dynamics) technique to investigate the bubble flow in a bubble trap. The distributions of bubble and pressure of the flow field resulting from the simulation for various shapes and bubble sizes were studied, respectively. The simulations indicate the basic characteristic and the variation of the bubble flow in the device. The main mechanism which can eliminate the bubbles in the device were illuminated.
최진욱(Jin-Wook Choe),이웅엽(Woong-Yup Lee),남석현(Seok-Hyun Nam),김진규(Jin-Gyu Kim) 대한전기학회 2019 전기학회논문지 Vol.68 No.11
As the competition in the electrical power cable market becomes more intense, not only the quality and the price, but also the ease assembly are becoming important. The failure in the joint and termination were caused by surface discharge along the interface of cable insulation and rubber sleeve for electric field grading. The factors affecting the surface discharge are contamination, interfacial pressure, surface roughness and lubricant. In this paper, the difference of surface roughness was investigated based on the grain size of sandpaper to simplify the cable preparation process. In addition, the influence of the factors was evaluated by the surface discharge test according to the surface roughness, the interface pressure, and the type of the lubricant.
캐비테이션 가열 장치의 로터 면에 위치한 딤플 및 형상에 관한 수치해석적 연구
손손(SUN Xun),신명섭(Myung Seob Shin),이웅엽(Woong Yup Lee),이여진(Yeo Jin Lee),엄애선(Ae Som Om),윤준용(Joon Yong Yun) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.11
This paper presents numerical investigation of local cavitation phenomena of water due to the rotor with highly rotational speed which in the heater. The standard k-epsilon turbulence model, the Mixture multiphase model and the Schnerr ? Sauer cavitation model were selected. The simulations provided insight into the flow field characteristics inside the heater. The pressure fields and the volume fractions of vapor were predicted respectively for different shapes of rotor. Through the comparison of each case, the optimum solution of the generation of vapor was obtained, which means the best design for heating.