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성층화된 유체 내에서 내부파와 표면파의 파형 변화 실험을 위한 수치적 연구
이주한(Ju-Han Lee),김관우(Kwan-Woo Kim),백광준(Kwang-Jun Paik),구원철(Won-Cheol Koo),김영규(Yeong-Gyu Kim) 한국해양공학회 2019 韓國海洋工學會誌 Vol.33 No.3
Internal waves occur at the interface between two layers caused by a seawater density difference. The internal waves generated by a body moving in a two-layer fluid are also related to the generation of surface waves because of their interaction. In these complex flow phenomena, the experimental measurements and experimental set-up for the wave patterns of the internal waves and surface waves are very difficult to perform in a laboratory. Therefore, studies have mainly been carried out using numerical analysis. However, model tests are needed to evaluate the accuracy of numerical models. In this study, the various experimental conditions were evaluated using CFD simulations before experiments to measure the wave patterns of the internal waves and surface waves in a stratified two-layer fluid. The numerical simulation conditions included variations in the densities of the fluids, depth of the two-layer fluid, and moving speed of the underwater body.