A modified hybrid element method (MHEM) including diffraction, refraction, reflection and dissipa-tion effects is developed to model wave transformation over large complex bathymetry under practical bo-undary conditio...A modified hybrid element method (MHEM) including diffraction, refraction, reflection and dissipa-tion effects is developed to model wave transformation over large complex bathymetry under practical bo-undary conditions. Adoption of a simple functional in the MHEM dispenses with the additional unknownsin simultaneous equations of the conventional hybrid element method (HEM). In this paper incompleteCholeski & conjugate gradients (ICCG) algorithm is used to save computer CPU operation time and storagespace; so calculation of wave information in large an area can be carried out on PC computers. Also, theMHEM grid can be controlled by computer using local wavelength. The validity and efficiency of MHEM areconfirmed by comparisons verifying that the MHEM can proviide numerical solutions with very good accuracy.展开更多
文摘A modified hybrid element method (MHEM) including diffraction, refraction, reflection and dissipa-tion effects is developed to model wave transformation over large complex bathymetry under practical bo-undary conditions. Adoption of a simple functional in the MHEM dispenses with the additional unknownsin simultaneous equations of the conventional hybrid element method (HEM). In this paper incompleteCholeski & conjugate gradients (ICCG) algorithm is used to save computer CPU operation time and storagespace; so calculation of wave information in large an area can be carried out on PC computers. Also, theMHEM grid can be controlled by computer using local wavelength. The validity and efficiency of MHEM areconfirmed by comparisons verifying that the MHEM can proviide numerical solutions with very good accuracy.
