Wave Loads Assessment on Coastal Structures at Inundation Risk Using CFD Modelling

Wave Loads Assessment on Coastal Structures at Inundation Risk Using CFD Modellin

Ana GomesJosé Pinho

Conference paperFirst Online: 19 November 2021

지난 수십 년 동안 극한 현상은 심각성과 주민, 기반 시설 및 인류 활동에 대한 위험 증가로 인해 우려를 불러일으켰습니다. 오늘날 해안 구조물이 범람하고 해변 침식 및 기반 시설 파괴가 전 세계 해안에서 흔히 발생합니다. 

완화에 효율적으로 기여하고 효율적인 방어 조치를 채택하려면 이러한 영향을 예상하는 것이 매우 중요합니다. 대규모 물리적 모델을 기반으로 하는 이전 실험 작업에서 목조 교각 상단의 고가 해안 구조물의 공극과 그에 따른 수평 및 수직 파도력 사이의 관계가 다양한 파도 하중 조건에 대해 연구되었습니다. 

이러한 실험 결과는 CFD 도구를 사용하여 유체/구조 상호 작용을 시뮬레이션하기 위한 수치 모델에 대한 보정 데이터 역할을 합니다. 주어진 파도 조건에 대해 물과 구조물 베이스 레벨 사이의 공극 높이를 다르게 하여 세 가지 시나리오를 시뮬레이션했습니다. 

수치 결과를 물리적 모델 결과와 비교하면 수치적으로 구한 수평력과 수직력의 최대값은 각각 평균 ​​14.4%와 25.4%의 상대차로 만족할 만합니다. 또한 구조물을 지지하는 교각에 작용하는 압력과 전단응력을 시뮬레이션하기 위해 실제 수치모델을 적용하였으며, 서로 다른 공극의 높이를 고려하고 각각의 CPU 시뮬레이션 시간을 평가하였습니다. 

이러한 방식으로 CFD 모델의 운영 모델링 기능을 평가하여 조기 경보 시스템 내에서 최종 사용에 대한 예측 선행 시간 제한을 결정했습니다.

키워드

Coastal risk, Elevated coastal structure, Numerical simulation, Flow-3D® , 해안 위험, 높은 해안 구조, 수치 시뮬레이션

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