Structure of River Turbulence behind Warm‐Water Discharge
Structure of River Turbulence behind Warm‐Water Discharge
复制标题
温水排放背后的河流湍流结构
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
D. Krasuski
中科院分区：
文献类型：
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作者：
V. Nikora;P. Rowiński;Aleksander Suchodolov;D. Krasuski
本文介绍了热电厂排温后河段紊流特性的特殊测量。瞬时纵向速度值的测量是在54个不同的垂直（同时在垂直的六个点）用特殊的微型螺旋桨米。计算了该河段的主要紊动特性、基本水力学量和形态学量，分析了该河段的各种物理现象。分析涉及的空间分布的速度和水温值，动能的湍流，湍流强度，和能量耗散率。在频谱分析、自相关分析和结构函数分析的基础上，对湍流尺度进行了定量估计。推导并检验了各种经验公式。
The paper presents special measurements of the turbulence characteristics in the river reach just behind the discharge of warm water from a thermal-electric power plant. The measurements of the values of instantaneous longitudinal velocities were taken with special micropropeller meters in 54 different verticals (simultaneously in six points at a vertical). The main characteristics of turbulence and basic hydraulic and morphometric quantities are computed and the analysis of different physical phenomena in the river reach is presented. The analysis concerns the spatial distributions of velocity and water-temperature values, kinetic energy of turbulence, turbulence intensity, and the dissipation rate of energy. The quantitative estimations of the scales of turbulence were carried out on the basis of analysis of frequency spectra, autocorrelation, and structural functions. Various empirical formulas were derived and checked.