塔甘罗格湾咸水流入顿口过程的数值研究

IF 0.7 Q4 OCEANOGRAPHY
А. L. Chikin, L. Chikina
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引用次数: 0

摘要

意图基于模型实例进行的数值研究旨在考察风涌引起的盐水从Taganrog湾流入Stary Don套管的过程。方法和结果。描述了开阔河床中水流和盐分分布的复杂数学模型。考虑了由Stary Don套筒和一部分主河道组成的Don河河段。盐通过主水库——塔甘罗格湾输送。该模型由圣维南方程组和对流-扩散方程描述。这个问题是用有限差分法解决的。数值研究了塔甘罗格湾海平面对唐三角洲地区水流性质和河流上游盐分渗透程度的影响结果。从数值上确定,流速不会显著影响Don主通道中的盐浓度。结论。计算实验表明,从塔甘罗格湾流入唐三角洲的盐水过程中的决定性因素是极端风暴潮导致的海平面显著上升;而之前的决选进一步增强了这种效果。所代表的模型给出了唐三角洲过程中由于涌浪现象可能导致的盐碱化的总体趋势。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Numerical Study of the Process of Salt Water Inflow to the Don Mouth from the Taganrog Bay
Purpose. Numerical study based on the model example is aimed at examining the process of the salt water inflow to the Stary Don sleeve from the Taganrog Bay due to the wind water surge. Methods and Results. Complex mathematical model of the flow and salt distribution in the open riverbed is described. The section of the River Don, consisting of the Stary Don sleeve and a part of the main channel was considered. Salt is delivered through the host reservoir – the Taganrog Bay. The model is described by the system of Saint-Venant equations and the convection-diffusion equation. The problem is solved by the finite-difference methods. The results of the numerically studied influence of the sea surface level in the Taganrog Bay both on the flow nature in the Don Delta area and the degree of salt penetration upstream of the river are obtained. It was numerically established that the flow rate did not significantly affect salt concentration in the Don main channel. Conclusions. The computational experiments showed that the decisive factor in the process of the salt water inflow to the Don Delta from the Taganrog Bay consisted in the sea level significant increase resulting from extreme wind surges; and the preceding runoffs enhanced this effect even greater. The represented model gives an idea of the general trend in the process of the Don Delta possible salinization as a result of the surge phenomena.
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来源期刊
Physical Oceanography
Physical Oceanography OCEANOGRAPHY-
CiteScore
1.80
自引率
25.00%
发文量
8
审稿时长
24 weeks
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