FVM is applied to the stream tubes, according to mass conservation principle and established the 2-D finite volume model in the contamination concentration field (CCF).

• 对河流污染物迁移扩散机理进行分析,提出将流管划分与有限体积法相结合的方法,利用流管求取河流流场,有限体积法求取污染物的扩散。