The Study And Implement Of Dianchi Lake Drainage Basin Water-environmental Pollution Simulation System

The project of simu1ating and designing contro1 system ofwater environmenta1 po11ution in Dianchi 1ake drainage basinis the basis of thi s di ssertation. Mu1ti--theories andmu1 t 1 --technol ogi es are needed in the process of s imu1at ing acompl ex s}stem. \1an}' aspects are inc 1 uded i n 1he Di anchi s}sT em,the} are mode1 s \ da1abase \ di sp1aying s}'stem. resu1 t ana1 yzingand dec i si on support s}'stem etc.First1y the who11} construcT ion of Dianchi system isd i scus sed, t hen hydrodynami c mode 1' geograph i c informat i onsystem (GIS) \ image processing and neTwork commun1 caT l on ares t u d i e d d e t a i 1 ed 1 v.Two--dimensi onal wind--driven current s mode1 on shal1 owwater i s used as hvdrodvnamic mode1. Fi nite e1ement and finitedifference are two primary methods used in the so1 ut ion processof di fferentia1 equat i on. The 1eap--frog method i s offered toca1cu 1ate the hydrodynamic equat ion in 1hi s di sserta1 i on and1he so1u1ion is di scussed.Geographic irformation system is app1 ied wide1y in thesystems re1evant 1o geography. GIS is a1so a key part in Dianchisystem. The theory of GIS is expounded here and the app1 icationof GIS in water resource is showed in the artic1e.1mage processing is primary work in di sp1aying system,several c1assic interpolation a1gori thms are di scussed, thenthe resu1t of image interpo1at ion by reverse--di stance powera1gori thm is offered here.Network communi cat ion is means of me ssages and datatransport among parts of system. Windows sockets are designedto achieve the communication process between ca1cu1ationserver and c1 ient server.