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Internal generation of waves on an arc in a rectangular grid system
- Source :
-
Coastal Engineering . Apr2007, Vol. 54 Issue 4, p357-368. 12p. - Publication Year :
- 2007
-
Abstract
- Abstract: This paper presents a technique to generate waves at oblique angles in finite difference numerical models in a rectangular grid system by using internal generation technique [Lee, C., Suh, K.D., 1998. Internal generation of waves for time-dependent mild-slope equations. Coast. Eng. 34, 35–57.] along an arc-shaped line source. Tests were made for four different types of wave generation layouts. Quantitative experiments were conducted under the following conditions: the propagation of waves on a flat bottom, the refraction and shoaling of waves on a planar slope, and the diffraction of waves to a semi-infinite breakwater. Numerical experiments were conducted using the extended mild-slope equations of Suh et al. [Suh, K.D., Lee, C., Park, W.S., 1997. Time-dependent equations for wave propagation on rapidly varying topography. Coast. Eng. 32, 91–117.]. The fourth layout type consisting of two parallel lines connected to a semicircle showed the best solutions, especially for a small grid size. This technique is useful for the numerical simulation of irregular waves with broad-banded directional spectrum using conventional spectral wave models for the reasonable estimation of bottom friction and wave-breaking. [Copyright &y& Elsevier]
- Subjects :
- *FINITE differences
*NUMERICAL analysis
*EQUATIONS
*MATHEMATICS
Subjects
Details
- Language :
- English
- ISSN :
- 03783839
- Volume :
- 54
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Coastal Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 24460478
- Full Text :
- https://doi.org/10.1016/j.coastaleng.2006.11.004