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The results of field hydrodynamic studies of the flow structure in the Ivan'kovo reservoir are analyzed. Lateral and vertical heterogeneity was established in the flow velocity, water temperature, and the concentration of suspended matter; and a near-bottom density-controlled current was revealed. The major portion of the suspended matter was shown to be transported by the near-bottom density-controlled current along the Volga navigable channel. 相似文献
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Samolyubov B. I. Zamarashkin A. L. Shil'nev A. V. Kremenetskii V. V. Silaev A. V. 《Water Resources》2001,28(2):123-128
The results of comprehensive hydrophysical studies of gradient and density-induced gravitational currents with thermal stratification in valley reservoirs are considered. The lengthwise and vertical development of currents as well as their evolution is considered. Local swells are detected in the near-bed nepheloid layer and clouds of suspended materials are found to be ejected from the density-induced current near abrupt changes in the bed relief. The near-bed density-induced current is found to strongly interact with the drift current in the presence of inner wave and variable-direction wind. The measured vertical profiles of velocity in the sections along the axis of the current and the longitudinal distributions of the average flow velocity and suspended material concentration are found to agree with model calculations. 相似文献
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B. I. Samolyubov 《Water Resources》2006,33(4):402-416
Results of field and theoretical studies of suspension transport by density currents are presented. The suspension transport is described by a mathematical model taking into account turbulent roiling and involvement, sedimentation, and bed erosion, variations in the vertical component of mean velocity, the relationship between the particles’ settling velocity and the distribution of their concentrations between the near-bottom and the overlaying water, on the one hand, and flow stability and velocity, on the other hand. The theoretical distributions of suspension concentrations are compared with those measured in 20 flows in nine reservoirs and lakes. 相似文献
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Considered are the regularities of development of a current system including a density flow and the currents caused by internal
seiches in a bay. Given is the analysis of the revealed impact of this current system, found in Petrozavodsk Bay of Lake Onega,
on the suspended solid material transport and turbidity cloud formation. Verified are proposed calculation techniques of the
current velocity distribution and suspended solid material concentration. 相似文献
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