In this program the voltage and current of simultaneous faults or unbalanced power system are calculated by solving the simultaneous equations of multi-port network and of the fault boundary.
A hydrodynamical model for oilspill simulation in archipelagic waters with multiple open boundary conditions is set up and simulation/forecast tests in Zhoushan dingpu Port are performed.
建立了一个多开边界群岛海域溢油模拟的三维水动力模式，并在舟山定普港域作了模拟和预报试验。
3
The Port is the boundary between the city and the ocean, It has the functions and the characters of the city and the ocean. So Digital Port is also indispensable to Digital Earth.