TAILIEUCHUNG - Some results of comparison between numerical and analytic solutions of the one line model for shoreline change

A qualitative understanding of the basic properties of complicated physical phenomena can often be obtained through the study of analytic solutions derived from simplified problems. Analytic solutions of shoreline change model for simple shoreline configurations are derived under idealized wave conditions. | Vietnam Journal of Mechanics, VAST, Vol. 28, No. 2 (2006), pp. 94-102 SOME RESULTS OF COMPARISON BETWEEN NUMERICAL AND ANALYTIC SOLUTIONS OF THE ONE-LINE MODEL FOR SHORELINE CHANGE LE XUAN ROAN Institute of Mechanics, VAST, 264 Doi Can, Hanoi, Vietnam Abstract. A qualitative understanding of the basic properties of complicated physical phenomena can often be obtained through the study of analytic solutions derived from simplified problems. Analytic solutions of shoreline change model for simple shoreline configurations are derived under idealized wave conditions. Both analytic and numerical methods are based on the one-line theory of shoreline change. In this paper some results of comparison of the numerical with analytic solutions are presented. 1. INTRODUCTION Under certain idealized wave conditions and simple shoreline configurations, the equations of one-line theory of shoreline change can be reduced to the one-dimensional equation of heat diffusion type, which in some certain simplified cases can be solved analytically. The analytic solutions are often valuable for giving qualitative insights and investigating the properties of shoreline change. However, it is important to be aware of the limitations of analytic solutions and errors introduced by these limitations. For the real situation, the use of numerical model of shoreline change could be more appropriate. Several authors have presented analytic solutions for certain simplified conditions (. Bakker and Edelman 1965; Bakker 1969; Le Mehaute' and Soldate 1977; Walton and Chiu 1979; Larson, Hanson, and Kraus 1987). In order to describe more realistic situations involving general shoreline configurations, together with time varying wave conditions, ·the one-line theory has been developed using numerical solution techniques (. Price, Tomlinson, and Willis 1973; Sasaki and Sakuramoto 1978; Kraus, Hanson, and Harikai 1985; Hanson and Kraus 1987). Four examples of shoreline evolution for simplified .

• Địa Lý
• Vietnam Journal of Mechanics
• Comparison between numerical
• The one line model for shoreline change
• The one line model
• Complicated physical phenomena
• Dang Dinh Ang
• Nonlinear analysis and mechanics
• Dynamic problems involving stationary cracks
• The Wiener Hopt technique
• Dual integral equations
• Dual integrals in non linear fracture mechanics
• Non linear fracture mechanics
• Energy release rate
• Discuss the obtained
• The alpha finite element method (αFEM)
• Solid mechanics using triangular and tetrahedral elements
• Suitable computational cost
• NS FEM makes
• The upper bound property
• Non linear constitutive problems in solid mechanics
• Non linear constitutive problems
• Languages Gibian and special operators
• The application FEM
• Betts miller janjic convective parameterization scheme
• H14 31 model to forecast heavy rainfall in Vietnam
• Betts Miller Janjic
• Three rain seasons
• Manufacturing dry mixed cement mortar
• High compressive strength
• High flexural strength
• Low shrinkage and high watertightness for restoration
• Damaged hydraulic structures in Vietnam
• Standard gradient models and crack simulation
• Standard gradient models
• The propagation of cracks
• Damage mechanics and crack simulation
• The interaction between two parametric excitations
• The second and third degrees
• The asymptotic method of nonlinear mechanics
• Dynamic system governed
• Comparison of two hydrological model simulations
• Nam and Xinanjiang for Nong Son catchment
• The Central Vietnam
• The runoff components
• 3 D numerical simulation
• The tidal circulation
• The gulf of Tonkin
• The kinetic energy distribution
• Duality in the analysis of responses to nonlinear systems
• The analysis of responses
• The original nonlinear systems
• The study of nonlinear mechanics
• Aerodynamics of a wing in surface effect ship
• Theory and experiment
• Wing in surface effect ship
• The aerodynamic characteristics
• The Institute of Mechanics
• The error estimate
• The convergence rate for h
• p refinement
• The finite element analysis
• Three dimensional elastostatic mechanics problems
• Some initial experimental results
• Free water layer formation in horizontal pipes
• Water layer formation
• Hanoi Institute of Mechanics
• Bending vibration of beam elements under moving loads
• Considering vehicle braking forces
• Fluctuations of structures
• Beam elements according
• Continuous element for vibration analysis
• Thick shells of revolution
• Continous Element Method
• Finite element solutions
• Natural frequencies and harmonic responses
• Cast3m implementation of the extended finite element method
• The extended finite element method for cohesive crack
• Quasi brittle materia
• The proposed implementation
• The displacement discontinuities
• Buckling analysis of simply supported composite laminates subjected
• In plane compression load
• A novel mesh ffree method
• Alternative numerical technique
• Mesh free method
• A three story building
• Hedge algebras based fuzzy controller
• The structural system
• The El Centro earthquake
• Three story building against earthquake
• Laminar separation phenomenon combining with numerical calculations
• The turbulent separation
• The laminar separation
• Experimental study on mechanical properties
• Three phase polymer composite reinforced
• Glass fibers and titanium oxide particles
• Polymer composite reinforced
• Three phase composite
• Dynamic characteristics of elastically supported beam subjected
• A compressive axial force and a moving load
• The implicit Newmark method
• The Galerkin finite element method
• The axial force
• Eccentrically stiffened functionally graded plates and shallow shells
• Von Karman Donnell sense
• The formulation of governing equations
• The classical shell theory
• Mathematical modelling and control of the evolution
• Dynamic systems interacting with medium
• Mathematical modeling evolutional systems interacting
• Two conjugate mechanical subsystems
• Evaluating structural safety based on fuzzy set theory
• Evaluating structural safety
• The fuzzy reliability
• Simple beam structure