http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
정체수역으로 방류된 수평병합부력제트의 진동운동에 대한 실험적 연구
류시완,서일원 한국수자원학회 2005 한국수자원학회논문집 Vol.38 No.8
본 연구에서는 정체수역으로 방류되는 수평병합부력제트에 대한 실험을 수행하여, 평민제트의 고유한 특징으로만 알려져 왔던 진동운동에 대해 구명하고자 하였다. 연구결과, 진동운동은 병합부력제트에서도 확인되었으며, 특히 병합천이역 시점에서부터 관찰되었다. 흐름의 국부적인 특성치와 진동운동을 야기하는 와의 통과빈도와의 관계를 나타내는 Strouhal수는 병합천이역에서 변화하여 병합이 완전히 이루어진 후에는 일정한 값으로 수렴하는 것으로 관측되었다. 평면제트에 대 A series of experiments has been performed to investigate the flapping motion, which has been generally considered as an intrinsic characteristic of plane flow, of the horizontal merging buoyant jet discharged into stationary ambient water. For Horizontal
류시완,서일원,김영도 대한토목학회 2013 KSCE JOURNAL OF CIVIL ENGINEERING Vol.17 No.7
The behavior of merging buoyant jets discharged from uni-directional diffuser has been examined considering the interaction of individual axi-symmetric jets. Some series of experiments have been performed to define the range of merging transition based on the variations of local flow properties. The properties for the large eddies on the boundaries; passing frequency, vortex spacing, and Strouhal number, are also measured to investigate the evolution of individual jets to a merged flow. The results of this study show that the local flow properties change from those of axi-symmetric to merged flow over a merging transition where b/ps = 0.3 to 1.2. The flapping motion is observed as the individual jets get merged with neighboring ones. After the merging transition (b/ps = 0.3 to 1.2),the flows show a typical behavior of plane flows with a constant value of Strouhal number.
류시완,여홍구 국립7개대학공동논문집간행위원회 2004 공업기술연구 Vol.4 No.-
Spur-dike is the structure, installed at the river side, controlling the velocity and direction of the flow and protecting the bank erosion. caused by the flow. For this, the determination of the distances and spaces between the spur-dikes and the direction against the flow are most important. The objective of this study is to investigate the flow characteristics between the spur-dikes and suggest the optimal design parameters of Spur-dike. From this study, it is found that the distance between structures controls the scale and strength of the eddies between each pair of spur-dikes and the angle against the flow also affects the performance of series of spur-dikes.