Boussinesq-type model with boundary-fitted coordinate system

An efficient numerical method for improved Boussinesq equations is proposed . Because of the use of the boundary-fitted coordinate system, the method f acilitates the solution of wave problems with complicated boundaries and to pography. The iterative method, combined with an efficient predictor-correc tor scheme, is adopted for the numerical solution of the governing differen tial equations. The proposed numerical scheme is verified by three test cas es where laboratory data were available for comparison. The successful simu lation of wave runup around a circular cylinder and twin-tandem cylinders a nd wave propagation over an elliptical shoal shows that the proposed numeri cal method is both stable and accurate.