摘要
针对σ坐标变换的不足,引入垂向坐标变换系数,通过严密的数学推导,建立了改进的三维水流传质数学模型。给出了改进后的控制方程及相应的边界条件、初始条件。采用有限差分法对模型进行了离散,针对瓯江河口局部海区进行了潮流、盐度过程的验证计算,取得了较好的成果。
A 3-D flow and matter transport numerical model is builded in the improved σ-coordinate system in this paper. A vertical transform coefficient is used in this work. The govern equations, the boundary conditions and the initialization conditions are obtained through the strict calculation. The model is dispersed by finite difference method （FDM）. The computation program is expressed with Fortran. The model and its program are confirmed by the test computation of the flow and the salinity process in part sea area of the Oujiang estuary.
出处
《水科学进展》
EI
CAS
CSCD
北大核心
2007年第5期717-723,共7页
Advances in Water Science
关键词
三维水流
Σ坐标
数学模型
FDM
3-D flow
σ-coordinate system
numerical model
finite difference method
