全沙数学模型在港口环境评价中的应用  

Application of total sediment mathematical model to assessment of harbor environment

作　　者：李大鸣[1] 李冰绯[1] 吕小海[1] 

机构地区：[1]天津大学建筑工程学院,天津300072

出　　处：《水利学报》2003年第6期37-42,共6页Journal of Hydraulic Engineering

摘　　要：本文提出了用两相流连续方程、运动方程描述底沙推移质运动模型的方法 ,建立了封闭求解的二维全沙数学模型方程组 ,对悬沙与底沙的交换问题进行了讨论。引入了平衡挟沙和非平衡挟沙交替计算的新方法。将此模型初步应用于港口建设的工程环境评价中 ,得到水流泥沙实测资料的验证 ,说明全沙数学模型方法是正确的。The 2 D mathematical model describing the transport of bed load based on continuity and flow equations is proposed.The closed equation group of the model is established.The exchange between suspended and bed sediment is taken into account.A new method for sediment transport by applying equilibrium transport theory and non equilibrium transport theory alternatively is suggested.The model is applied to the assessment of the environment of harbors.The validity of the model is verified by prototype observation data.

关 键 词：两相流 全沙数学模型 港口环境评价 推移质运动 平衡挟沙和非平衡挟沙 

分 类 号：TV149[水利工程—水力学及河流动力学]