潮汐通道系统动力地貌演变的数值模拟研究进展

Advances in morphodynamic modeling of tidal inlet systems

潮汐通道系统在我国及世界都有广泛分布,其动力地貌演变过程具有较强的特殊性和复杂性.本文从潮汐通道系统动力地貌演变数学模型的底床状态、水动力、泥沙输运和地形更新等模块方面,系统总结了国内外近几十年来主要研究进展,特别是对潮平均法、地貌快速判定法、联机法和并行联机法等几种不同的地形更新方法及其动力地貌模拟效果进行了重点分析与探讨,指出波流共同作用下的泥沙运动与不同时空尺度的动力沉积过程的耦合是未来研究的重点和方向.

Vast tidal inlet systems can be found widely at home and abroad. The tidal inlet systems are characteristically with complicated morphodynamic evolution. In this paper, the advances in morphodynamic model of tidal inlet systems, including the bed state module, hydrodynamics module, sediment transport module and bed updating module, are introduced in detail. Especially, the different approaches of the bed updating and their computational results are discussed and compared. Then the sediment transport by waves and tidal currents and the coupling computation of different sedimentary processes are the focal points in future.