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引入摄动分析的理论,尝试定量地描述紊动水流和悬移质泥沙之间的相互作用.应用悬移质泥沙浓度垂线分布公式[1],分析由此产生的附加雷诺应力,得出了被摄动的速度分布,统一了现有挟沙水流速度分布的两种模式,与文献[2]中已经过验证的速度分布规律十分吻合.用这种分析方法得到的结果是对文献[2]中结果的理论解释,它不仅有助于我们理解低浓度固液两相流流动的复杂机理,而且为进一步的分析和研究提供了一个有益的框架和思路.
The introduction of the theory of perturbation analysis attempts to quantitatively describe the interaction between turbulent water flow and suspended sediment. Using the vertical distribution formula of suspended sediment concentration [1], the resulting additional Reynolds stress is analyzed and the perturbed velocity distribution is obtained, and the two models of velocity distribution of sediment-laden flow are unified with the literature The verified velocity distribution in [2] is very consistent. The result obtained by this method is a theoretical explanation of the result in [2], which not only helps us to understand the complicated mechanism of the flow of low-concentration solid-liquid two-phase flow but also provides a benefit for further analysis and research Frame and ideas.