Evolution of the Horizontal Mixing Layer In Shallow Water
- 作者: Chesnokov A.1,2, Liapidevskii V.1,2
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隶属关系:
- Lavrentyev Institute of Hydrodynamics, Siberian Branch
- Novosibirsk State University
- 期: 卷 60, 编号 2 (2019)
- 页面: 365-376
- 栏目: Article
- URL: https://journals.rcsi.science/0021-8944/article/view/161506
- DOI: https://doi.org/10.1134/S0021894419020172
- ID: 161506
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详细
Horizontal shear motion of a homogeneous fluid in an open channel is considered in the approximation of the shallow water theory. The main attention is paid to studying the mixing process induced by the development of the Kelvin–Helmholtz instability and by the action of bottom friction. Based on a three-layer flow pattern, an averaged one-dimensional model of formation and evolution of the horizontal mixing layer is derived with allowance for friction. Steady solutions of the equations of motion are constructed, and the problem of the mixing layer structure is solved. The bottom friction produces a stabilizing effect and reduces the growth of the mixing layer. Verification of the proposed one-dimensional model is performed through comparisons with available experimental data and with the numerical solution of the two-dimensional equations of the shallow water theory.
作者简介
A. Chesnokov
Lavrentyev Institute of Hydrodynamics, Siberian Branch; Novosibirsk State University
编辑信件的主要联系方式.
Email: chesnokov@hydro.nsc.ru
俄罗斯联邦, Novosibirsk, 630090; Novosibirsk, 630090
V. Liapidevskii
Lavrentyev Institute of Hydrodynamics, Siberian Branch; Novosibirsk State University
编辑信件的主要联系方式.
Email: liapid@hydro.nsc.ru
俄罗斯联邦, Novosibirsk, 630090; Novosibirsk, 630090