Global-scale indefinite region flood routing modeling based on two-dimensional unsteady flow

By choosing numerical method and definite solution conditions of flood fundamental control equations for the Digital Earth platform, establishes a flood routing modeling based on Digital Earth; and on this basis, making use of human-computer interaction and cellular automaton technologies, proposes a method of computational domain extraction; the experiment verifies that the method can effectively solve the closing boundary problems on global-scare indefinite region flood modeling.