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논문 기본 정보

자료유형
학술저널
저자정보
오승훈 (한국해양과학기술원) 조석규 (한국해양과학기술원) 정동호 (한국해양과학기술원) 성홍근 (한국해양과학기술원)
저널정보
한국해양공학회 한국해양공학회지 한국해양공학회지 제32권 제6호(통권 제145호)
발행연도
2018.12
수록면
447 - 457 (11page)

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초록· 키워드

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In this study, a two-dimensional fully nonlinear transient wave numerical tank was developed using a desingularized indirect boundary integral equation method. The desingularized indirect boundary integral equation method is simpler and faster than the conventional boundary element method because special treatment is not required to compute the boundary integral. Numerical simulations were carried out in the time domain using the fourth order Runge-Kutta method. A mixed Eulerian-Lagrangian approach was adapted to reconstruct the free surface at each time step. A numerical damping zone was used to minimize the reflective wave in the downstream region. The interpolating method of a Gaussian radial basis function-type artificial neural network was used to calculate the gradient of the free surface elevation without element connectivity. The desingularized indirect boundary integral equation using an isolated point source and radial basis function has no need for information about the element connectivity and is a meshless method that is numerically more flexible. In order to validate the accuracy of the numerical wave tank based on the desingularized indirect boundary integral equation method and meshless technique, several numerical simulations were carried out. First, a comparison with numerical results according to the type of desingularized source was carried out and confirmed that continuous line sources can be replaced by simply isolated sources. In addition, a propagation simulation of a 2nd-order Stokes wave was carried out and compared with an analytical solution. Finally, simulations of propagating waves in shallow water and propagating waves over a submerged bar were also carried and compared with published data.

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ABSTRACT
1. 서론
2. 수학적 정식화 및 수치방법
3. 수치 계산 및 결과
4. 결론
References

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