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本文研究了由驳船瞬时倾倒的颗粒状废物所形成的废物云团在海洋环境中的沉降过程,对Koh和Chang的数学模型进行了两点改进,其一为假定废物云团在沉降过程中的形状为单叶玫瑰线旋转体,而不是半球体,其二为给出了合理的浮力方程表达式,借助于改进的模型,可以对废物云团的尺寸、位置以及云团中的颗粒浓度进行预报。将计算结果与实验结果进行了比较,二者吻合甚好,用本文方法对北黄海5~#倾废区倾倒碱渣的情况进行了计算。
This paper studies the sedimentation process of waste cloud formed by the granular waste transiently bargeed by barge in marine environment. Two improvements are made to the mathematical model of Koh and Chang. One is that the waste cloud is assumed to be in the process of settlement The shape is single-leaf rose-line but not hemisphere. The second is to give a reasonable expression of the buoyancy equation. With the help of the improved model, the size and position of the waste cloud and the particle concentration in the cloud can be carried out forecast. The calculated results are compared with the experimental results, which are in good agreement with each other. The method of this paper is used to calculate the dumping of caustic soda in the 5 ~ # dumping area in North Yellow Sea.