• 대한토목학회논문집
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• 제30권1B호
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• pp.89-100
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• 2010

본 연구에서는 고파랑의 단주기파랑과 고립파를 동시에 저감시키기 위한 저감공으로 단주기파랑에 대해 기연구개발된 공진장치를 기설의 방파제 항구부에 부착하는 공법을 검토하였다. 이와 같은 저감공은 공진현상으로부터 단주기파랑의 입사에너지를 포획하여 기설의 방파제 배후로 전달되는 파랑에너지를 저감시키는 특성을 갖는다. 수치해석에 있어서 단주기파랑에 대해서는 연직선Green함수에 기초한 특이점분포법을, 고립파에 대해서는 3차원수치파동수로를 이용하는 3차원혼상류해석법을 각각 적용하였고, 기존의 수치해석결과 및 실험결과와 비교 분석하여 본 수치해석법의 타당성을 검증하였다. 이로부터 공진장치가 없는 경우와 대비 검토하여 단주기파랑 및 고립파의 제어에 대한 공진장치의 제어능을 다각도로 검토한 결과, 그의 유효성을 충분히 확인할 수 있었다. 그리고, 제어대상의 고립파에 대해 공진장치의 최적치수가 존재한다는 사실을 확인할 수 있었다.

• 대한기계학회논문집
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• 제5권3호
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• pp.238-243
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• 1981

An empirical formula for the mass flow rate in natural convection flume above a spherical heated body which is submerged in a finite fluid contained in a tank was determined. The ratio of depth of submergence to diameter of the sphere for which the sphere sensed as infinite medium was found to be bigger than 7. A dimensionless heat transfer correlation for the natural convection from a sphere was determined for Gr.Prq etween 7x10$\^$7/ and 2x10$\^$8/ also.

• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 2000년도 창립총회 및 춘계학술발표회
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• pp.116-119
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• 2000

There has been a steady increase in geoenvironmental engineering projects where geotechnical engineering has been combined with environmental concerns. Many of these projects involve some investigation on contaminant and leachate flume in the ground and landfill. In this study, investigation and assesment on soil and groundwater around the waste landfill was carried out. Many techniques such as drilling and sampling method were applied. As a result of this study, the concentration of soil and groundwater were investigated and analysed.

• 수산해양기술연구
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• 제31권1호
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• pp.24-28
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• 1995

Exercise physiology of fish was studied by means of Electro-cardio-gram(ECG) technique with wired electrode system. Effects of swimming activity on the heart rate change for carp Cyprinus carpio was observed and analysed under swimming speeds among 1~3 Body Length/s and swimming durations of 10 and 60 minutes in the flume tank. The heart rate increase during swimming activity was observed in higher speed and longer duration conditions. The exercise effect on the heart rate continued even after fish stopped swimming. The time for recovery after exercise was tended to be elongated with the higher exercise condition.

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2003년도 추계 학술대회 논문집
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• pp.27-30
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• 2003

자망이나 삼중자망은 그물에 고기가 꽂히거나 얽히게 하여 어획하는 어법이다. 흐름이 있는 곳에서 어구는 저항을 받게 되고, 이에 따라 형성되는 어구 형상은 유속 세기와 부력 및 사용된 그물의 망지 길이(뻗친 높이)와 관련된다(장ㆍ서, 1982; 천상, 1981; 송전, 2001). 이때 자망의 높이는 어획 효율에 영향을 미치는 매우 중요한 요소이다. 저자망의 경우 뜸줄의 높이는 바다에서 다이버나 자기기록식 기록계에 의해 기록되거나 flume tank에서 여러 가지 망목크기와 길이 및 망사직경에 대해 조사된 바가 있다 (Matuda, 1988; Stewart, 1988). (중략)

• 한국관개배수논문집
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• 제7권2호
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• pp.49-56
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• 2000

A hydraulic model study have been carried out on roughness coefficient of corrugated helical steel pipe. The study was performed in the 0.6m wide flume of Hydraulic Laboratory for the pipe diameter of 0.6m and 1.6m. Additional study was performed in 2m wi

• 한국농공학회지
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• 제28권1호
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• pp.41-50
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• 1986

This paper attempts to qualitatively characterize scour erosion processes near USGS constriction type-I structures with vertical embankments and abutments. The scour dimensions and rates of sand beds around the structure models were measured in a rectangular flume. The test results showed that scour took place at a rapid rate at initial stages, which were followed by a stage of slow and general scour with greater extends. The maximum scour depth was observed near upstream corner of embankments. Empirical relationships for scour dimensions were derived, that were based on the results from a dimensional analysis of scour processes.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2005년도 학술발표논문집
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• pp.417-422
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• 2005

The procedure of investigation and design of the soil contaminated with petroleum was introduced. Soil and water quality analyses were carried out to figure out the type of contaminants and the flume range according to the national regulation. In the investigation, it was verified that the soils in several dispersed locations were contaminated with petroleum. Therefore, in the design process, it was necessary to select a optimal remediation method after making the conception model of the site, and then the treatment method of incineration was selected.

• 한국해안해양공학회:학술대회논문집
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• 한국해안해양공학회 2003년도 한국해안해양공학발표논문집
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• pp.103-109
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• 2003

Wave flumes are usually equipped with a wave generator at one end and a wave absorber at the other end. The absorbers could be broadly classified into two main categories： active and passive wave absorbers. A typical passive wave absorber to eliminate unwanted reflections is the beach of constant or varying slopes reaching the bottom. (omitted)

• 한국관개배수논문집
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• 제3권2호
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• pp.53-56
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• 1996

The purpose of this study is to make it clear that the P. E. strip textile function well as a roughness element in a rather highly distorted scale model. A series of test has been conducted in a flume to measure the effect of P. E. strip textile for the f