【摘要】 本文用破开算子法对三维泥沙扩散问题建立了数值模型，对破开后的四个微分方程分别采用不同的差分格式进行计算．利用垂向坐标变换技术，使垂直方向网格划分更有利于泥沙扩散物理过程的描述，避免了底边界几何形状不规则所造成的计算复杂和不稳定，该模型应用在镇海某原油码头疏浚引起泥沙扩散对周围地区的影响上．取得有价值的成果．更多还原

【Abstract】 This paper describes the development of a three-dimensional numerical model of dredgedsediment transport.Using a splitting method,the basic equation is splited up into four finitedifference forms.A vertical coordinate transformation is described.This transformation has theadvantages of mapping the free surface and bottom boundaries onto coordinate surfaces and allowing for a uniform vertical grid resolution throughout the modeled region. This model hasbeen applied successfully in simulation of sediment transport caused by a harbor dredging.更多还原