水电站漂浮物堆积形态的数值模拟

Numerical simulation of the floating-debris′ accumulation form in front of the hydropower station

针对水库库区漂浮物的运动特点,建立了基于平面二维水流数学模型分析漂浮物堆积形态的方法.假设漂浮物具有良好跟随性,即漂浮物与水流质点运动轨迹一致,通过分析水流质点的运动,得出漂浮物的运动情况.数值模拟结果与实测资料和物理模型试验结果的验证比较表明,该方法可以定性分析漂浮物的堆积形态.

A new analysis method is developed for the floating-debris′ accumulation form in the reservoir based on a two-dimensional flow model according to the kinematic characteristics of the floating-debris. Assuming the floating-debris′ movement is identical with the flow, it is suggested that the flow characteristics of the water particle should be used to represent the floating-debris′ movement in front of the hydropower station. Comparison between numerical simulation and measured results of the physical model test shows that this model can qualitatively simulate the floating-debris′ accumulation form.