A three-dimensional numerical model was developed to better understand the hydrodynamics and sediment processes near the water intake of the Cardinal power plant. Sediment is represented with particles that are suspended, deposited or transported as bed load depending on particle size, flow turbulence and local bed shear stress, neglecting morphological changes. Validation against field velocity data indicated that buoyancy forces, originated by temperature gradients, need to be included to predict the observed flow pattern. The existing intake structures do not fully prevent the entrainment of warm water from the plant into the intake, which affects the plant efficiency, flow pattern and sediment deposition. Location of deposited particles and deposition rate predicted with the model compared well against observations in a physical model. However, computations at prototype scale show deviations from the physical model, suggesting that model scale effects in the physical model can be significant.

中文翻译：

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Cardinal 电厂取水口附近流体动力学和泥沙输移的数值模拟

开发了一个三维数值模型，以更好地了解 Cardinal 发电厂取水口附近的流体动力学和沉积过程。沉积物用悬浮、沉积或运输的颗粒表示，取决于颗粒大小、流动湍流和局部床剪切应力，忽略形态变化。对场速数据的验证表明，需要包括由温度梯度引起的浮力来预测观察到的流动模式。现有的取水口结构并不能完全阻止温水从工厂进入取水口，从而影响工厂效率、流型和沉积物沉积。模型预测的沉积颗粒位置和沉积速率与物理模型中的观察结果进行了很好的比较。然而，