In this paper the velocity field and water level height of two- dimensional unsteady flow in open channel with double-line bridge are modelled with finite difference method of alternate direction.The ADI method is mod...In this paper the velocity field and water level height of two- dimensional unsteady flow in open channel with double-line bridge are modelled with finite difference method of alternate direction.The ADI method is modified according to the rapidly changed speed of the flow.Since empirical formulas are reasonably chosen at the inner-boundary,the calculating steadiness is increased and the calculating results improved. These are closer to real data.展开更多
文摘In this paper the velocity field and water level height of two- dimensional unsteady flow in open channel with double-line bridge are modelled with finite difference method of alternate direction.The ADI method is modified according to the rapidly changed speed of the flow.Since empirical formulas are reasonably chosen at the inner-boundary,the calculating steadiness is increased and the calculating results improved. These are closer to real data.
