http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
접촉 표면형상이 마찰열 발생에 미치는 영향에 관한 연구
이상돈(S-D Lee),김태완(T-W Kim),조용주(Y-J Cho) 한국트라이볼로지학회 2004 한국트라이볼로지학회 학술대회 Vol.38 No.-
The surface temperature at the interface of bodies in a sliding contact is one of the most important factors influencing the behavior of machine components. Most surface failure in sliding contact region result from frictional heat generation. The surface temperature rise is not related only to the contact pressure, sliding speed and material properties, but also surface orientation. In this study, the effect of contact surface orientation on frictional heat generation is researched. The longitudinal surface and transversal surface was used in analysis and the test.
이상천,한용운,신현승,이형돈,Lee, S.C.,Han, Y.O.,Shin, H.S.,Lee, H.D. 대한설비공학회 1993 설비공학 논문집 Vol.5 No.1
An experiment has been carried out to identify flow patterns in a horizontal condensing flow with R-113. Characteristics of flow patterns were determined based upon a statistical analysis of differential pressure fluctuations at an orifice. The probability density function and power spectral density function of instantaneous pressure drop curves for various flow conditions were obtained. In comparison to the results of air-water flows, the flow patterns in a condensing flow such as annular, wavy, slug and plug could be identified. The experimental data determined by this technique were compared with the flow pattern maps suggested by other investigators. The result indicates that the statistical characteristics of differential pressure fluctuations at an orifice may be a useful tool for identifying flow patterns both in condensing flows and in adiabatic two-phase flows.