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对常物性条件下，水中含有的金属腐蚀产物微小颗粒在管道中的层流与紊流对流传质，在壁面上杂质的质量分数或质流密度为常数的条件下进行了理论分析和数值计算，给出了对流传质问题的理论解及计算关联式。结果表明：Ｌｅ越大，扩散边界层越薄。质量分数的剧烈变化发生在紧靠壁面的一薄层内。对于紊流对流传质，当离管壁的量纲为一的距离小于６时的质量分数分布对传质的影响甚大，因此，对紊流传质必须采用修正的紊流模型，而不能简单地假设紊流施密特数等于１。
Under normal conditions, the laminar and turbulent convection and mass transfer of tiny particles of metal corrosion products contained in the water are theoretically analyzed and numerically calculated when the mass fraction or mass flow density of the wall is constant , Gives the theoretical solution and calculation of the convection mass transfer problem. The results show that the larger Le is, the thinner the diffusion boundary layer. The dramatic change in mass fraction occurs in a thin layer next to the wall. For turbulent convection mass transfer, when the distance from the tube wall is less than 6, the mass fraction distribution has a great influence on the mass transfer. Therefore, the turbulent mass transfer model must adopt a modified turbulence model, not simply Suppose the turbulence Schmidt number is equal to 1.