Volume 15, Issue 1 (2015)                   MCEJ 2015, 15(1): 109-119 | Back to browse issues page

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nazari N. Simulation of Sediment Transport at Straight channel and Lateral Intake. MCEJ. 2015; 15 (1) :109-119
URL: http://mcej.modares.ac.ir/article-16-6728-en.html
Abstract:   (3737 Views)
In this paper, the Lagrangian tracking of individual particles was performed at the straight channel and the lateral intake. This study is conducted for the aim of investigation of Discrete Phase Model )DPM (for simulation of tracking of individual sediment particles and also estimation of the rate of bed load at the entrance of intake related to the main channel. The Reynolds stress transport model )RSM) of the FLUENT software was used for evaluating the turbulent flow characteristics. The study was conducted in two parts. At the first part, the particle movement was simulated in the straight channel for evaluating of the model operation. The comparison of numerical results (predicted) and experimental data (measured), which were done for this purpose, confirmed numerical simulation. In the second part, sediments movement pattern in lateral intake from straight direction investigated from quantitative and qualitative views and compared with available experimental data. The qualitative analysis of sediments movement showed a shape of wedge liked sand bar forms by bed load at the entrance of lateral intake. The quantitative comparison of the predicted and measured Qs (ratio of the bed load discharge in lateral intake to the bed load in main channel) shows predicted values were more than the measured values. In this paper, the Lagrangian tracking of individual particles was performed at the straight channel and the lateral intake. This study is conducted for the aim of investigation of Discrete Phase Model )DPM (for simulation of tracking of individual sediment particles and also estimation of the rate of bed load at the entrance of intake related to the main channel. The Reynolds stress transport model )RSM) of the FLUENT software was used for evaluating the turbulent flow characteristics. The study was conducted in two parts. At the first part, the particle movement was simulated in the straight channel for evaluating of the model operation. The comparison of numerical results (predicted) and experimental data (measured), which were done for this purpose, confirmed numerical simulation. In the second part, sediments movement pattern in lateral intake from straight direction investigated from quantitative and qualitative views and compared with available experimental data. The qualitative analysis of sediments movement showed a shape of wedge liked sand bar forms by bed load at the entrance of lateral intake. The quantitative comparison of the predicted and measured Qs (ratio of the bed load discharge in lateral intake to the bed load in main channel) shows predicted values were more than the measured values. from quantitative and qualitative views and compared with available experimental data. The qualitative analysis of sediments movement showed a shape of wedge liked sand bar forms by bed load at the entrance of lateral intake. The quantitative comparison of the predicted and measured Qs (ratio of the bed load discharge in lateral intake to the bed load in main channel) shows predicted values were more than the measured values.
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Article Type: Original Manuscript | Subject: omran|-------
Received: 2011/10/2 | Accepted: 2015/04/21 | Published: 2015/05/17

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