사각 실린더 주위 wave run-up의 수치적 연구
Numerical Analysis on Wave Run-up around a Square Cylinder
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
본 논문은 정사각형 실린더를 관통하는 자유 표면 주변의 wave run-up과 depression 현상을 수치 시뮬레이션을 이용하여 연구하였다. 상용 전산유체역학(CFD) 프로그램인 Star CCM+를 사용하여 Reynolds-averaged Navier-Stokes (RANS) 방정식을 수치적으로 계산하였다. 푸르드 수(Froude number)가 0.4, 0.84 및 1.2인 세 가지 다른 경우를 적용하여 wave run-up과 depression 현상의 특성을 비교하였다. 결과는 이전 실험 및 수치 연구와 비교되었다. 또한, 원형 실린더의 결과와 비교하여 실린더의 단면 모양이 wave run-up과 depression depth에 어떤 영향을 미치는지를 살펴보았다. 논문은 수치 시뮬레이션에 사용된 방법론에 대한 세부 내용뿐만 아니라, 계산 그리드 설정, 경계 조건, 난류 모델 선택 및 후 처리 기술에 대한 내용이 포함되었다. 또한, 수치 시뮬레이션으로부터 얻은 결과에 대해 다양한 푸르드 수에 따른 wave run-up과 depression depth의 변화 및 실린더의 단면 모양이 이러한 현상에 미치는 영향에 대한 토론이 포함되었다.
Abstract
This paper investigates the wave run-up and depression phenomena around a square cylinder using numerical simulations. Specifically, the researchers utilized Star CCM+, a commercial computational fluid dynamics (CFD) program, to numerically solve the Reynolds-averaged Navier-Stokes (RANS) equations. Three different Froude numbers (0.4, 0.84, and 1.2) were employed to study the characteristics of wave run-up and depression. The study aims to compare its findings with previous experimental and numerical investigations. Additionally, the researchers examined how the cross-sectional shape of cylinders, specifically comparing square and circular cylinders, affects the wave run-up and depression heights. The paper likely includes details on the methodology employed in the numerical simulations, such as the computational grid setup, boundary conditions, turbulence model selection, and post-processing techniques. Furthermore, it discusses the results obtained from the simulations, including the wave run-up and depression heights, their variations with different Froude numbers, and the influence of the cylinder's cross-sectional shape on these phenomena.
참고문헌 (11)
- B.W. Nam, "Computation of Nonlinear Wave Run-up around a Semi-submersible platform", PRADS 2013, pp.809~815 (2013)
- S. B. Lee, "Study on Wave Run-Up Phenomenon over Vertical Cylinder", Journal of Ocean Engineering and Technology, 27(4), pp.62~67 (2013)
- B. G. Koo, "A Study on Wave Run-up height and Depression Depth around Air-water Interface-piercing Circular Cylinder", Journal of Korean Society of Marine Environment and Safety, 20(3), pp.312~317 (2014)
- B.G. Koo, "Numerical study of two-phase air-water interfacial flow: Plunging wave breaking and vortex-interface interaction", PhD, pp.2011
- J. Suh, "The effect of air-water interface on the vortex shedding from a vertical circular cylinder", Journal of Fluids and Structure, 27(1), pp.1~22 (2011)
- J.R. Chaplin, "Steady flow past a vertical surface-piercing circular cylinder", Journal of Fluids and Structures, 18, pp.271~285 (2003)
- H.T. Kim, "Benchmark Studies of Wave Run-up", 2013 KTTC Ocean Engineering Committee, pp.1~47 (2014)
- High- Fidelity CFD Simulation of Wave Run-up for Single, "multiple Surface-piercing Cylinders in Regular Head Waves", S. H. Yoon, 2015, pp.1~22
- K. J. Cha, "Numerical Simulation of Wave Run-up Around Circular Cylinders in Waves", Journal of the Korean Society of Marine Environment & Safety, 22(6), pp.750~757 (2016)
- G. J. Ahn, "A Numerical Study on the Flow Characteristics around a Free Surface Piercing Cylinder", J. Comput. Fluids Eng, 27(4), pp.129~136 (2022)
- N. Repalle, "Wave run-up investigation on a square cylinder", 17th Australasia Fluid Mechanics Conference (2010)