简介:Themild-slopeequationisfamiliartocoastalengineersasitcaneffectivelydescribewavepropagationinnearshoreregions.However,itscomputationalmethodinCartesiancoordinatesoftenrendersthemodelinaccurateinareaswithirregularshorelines,suchasestuariesandharbors.Basedonthehyperbolicmild-slopeequationinCartesiancoordinates,thenumericalmodelinorthogonalcurvilinearcoordinatesisdeveloped.ThetransformedmodelisdiscretizedbythefinitedifferencemethodandsolvedbytheADImethodwithspace-staggeredgrids.Thenumericalpredictionsincurvilinearcoordinatesshowgoodagreementwiththedataobtainedinthreetypicalphysicalexperiments,whichdemonstratesthatthepresentmodelcanbeusedtosimulatewavepropagation,fornormalincidenceandobliqueincidence,indomainswithcomplicatedtopographyandboundaryconditions.