한국해안해양공학회지 (Journal of Korean Society of Coastal and Ocean Engineers)

한국해안·해양공학회 (Korean Society of Coastal and Ocean Engineers)
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잠재 평판 주변에서 발생하는 순환류에 대한 실험적 연구

An Experimental Study on Circulating Flow Around a Submerged Horizontal Plate

  • 발행 : 2001.06.01
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초록

잠재된 평판 방파제가 해수 교환에 미치는 영향을 실험적으로 조사하였고 그 결과를 제시한다. 흐름은 PIV 시스템으로 관측되었으며 조화분석으로부터 분리된 평균 흐름과 파랑 타원이 각각 제시된다. 실험결과, 순환유량은 입사파의 체적플럭스와 밀접한 관계가 있으며 쌍와류가 평판 후면에서 관측되었다. 염료추적에 의하면 평판위에서 발생된 제트류로 인한 난류의 영향으로 유입되는 해수와 항내 오염물질이 상당히 잘 섞이고 있음을 보여주고 있다.

This paper describes results of an experimental study to examine the effect of a submerged horizontal breakwater to sea water exchange. Flow measurements were taken by using a PIV(Particie Image Velocimetry) system, and mean currents and wave ellipses extracted through the harmonic analysis are presented. As results, the rates of circulating flow were closely connected with the volume flux of incident waves and the counter-rotating vortex pair was observed at the onshore side of a plate. The dye study showed that incoming sea water and polluted water body mixed up significantly due to turbulent motions induced by a jet-like flow.

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참고문헌

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