当前位置: X-MOL 学术Environ. Model. Assessment › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Numerical Study of Technogenic Thermal Pollution Zones’ Formations in the Water Environment from the Activities of the Power Plant
Environmental Modeling & Assessment ( IF 2.4 ) Pub Date : 2019-04-30 , DOI: 10.1007/s10666-019-09668-8
Alibek Issakhov , Yeldos Zhandaulet

Thermal pollution of water bodies is an inevitable consequence of a thermal or nuclear power plant operation. To minimize the harmful effects, it is necessary to evaluate the different locations for the heated water discharge from the power plant. The most effective approach to solving these problems is a computational experiment. In this paper, the numerical studies of thermal pollution of the Irtysh River as a natural water cooling system from the power plant operation were presented. Such problems are traditionally solved in a two-dimensional formulation by using the “shallow water” approximation. Moreover in this work, a two-dimensional model for the numerical simulation of a flow was used with its characteristics of mixing heated water discharged from lateral protrusions with a transverse flow. Furthermore, experimental data and numerical results of other authors were used in order to check the conformity of the numerical results. The obtained numerical results gave good agreement with the experimental data for selecting the optimal turbulent model, in particular, the jets trajectory, the recirculation zone size, and the dimensionless excess temperature distribution. For this purpose, the turbulent models (k − ε, k − ω) were chosen for the turbulent kinetic energy boundary conditions to match the experimental data. Also, studies were conducted to study thermal pollution under different scenarios, the impact of the heated water discharge from a power plant into the Irtysh River.



中文翻译:

从电厂活动看水环境中技术性热污染区形成的数值研究

水体的热污染是火力发电厂或核电厂运行的必然结果。为了最大程度地减少有害影响,有必要评估从电厂排放热水的不同位置。解决这些问题的最有效方法是计算实验。本文对发电厂运行中作为自然水冷却系统的额尔齐斯河的热污染进行了数值研究。传统上,这些问题是通过使用“浅水”近似值以二维公式解决的。此外,在这项工作中,使用了一个二维的流动数值模拟模型,其特征是将从侧向突起排出的热水与横向流动混合在一起。此外,使用实验数据和其他作者的数值结果来检验数值结果的一致性。所得数值结果与选择最佳湍流模型的实验数据吻合良好,尤其是射流的轨迹,回流区的大小和无因次的温度分布。为此,湍流模型(为湍动能边界条件选择了k  -  εk  -  ω)以匹配实验数据。此外,还进行了研究,以研究在不同情况下的热污染,从电厂排入额尔齐斯河的热水的影响。

更新日期:2020-04-23
down
wechat
bug