Transport and mixing in parametrically excited fluid layers

参数激发流体层中的传输和混合

• 批准号: 403056540
• 负责人: Professor Dr. Michael Bestehorn
• 金额: --
• 依托单位: Lehrstuhl Aerodynamik und Strömungslehre
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/403056540?language=en
• 关键词: Transport; mixing; parametrically; excited; fluid

In the proposed project, we want to compare experimental and numerical results on surface waves in circular channels. The waves are generated by a moving barrier or an azimuthal vibration of the channel. The investigations fall into the class of parametrically generated waves, which play an important role in many areas of mechanics. The project proposed here can be seen as a natural extension of a pilot project carried out at the DFG Core Facility Center "Physics of Rotating Flows" at BTU Cottbus-Senftenberg. An experiment was used which was originally set up for the DFG research group "MS-GWaves". The project proposed here will investigate transport and mixing in the context of nonlinear surface waves. The focus will be on the collision of bores, bores in bilayer systems, and the generation of nonlinear waves by an asymmetric forcing. From the dynamical point of view, bores are closely related to tsunamis. They are generally not as dangerous but they occur much more frequently and are important for sediment transport in rivers and fisheries in estuaries. Given the many applications in environmental research, it is important to collect and compare more experimental and numerical data for a better understanding.

在提出的项目中，我们希望比较圆形通道中表面波的实验结果和数值结果。这些波是由移动的障碍物或通道的方位振动产生的。这些研究属于参数产生波的范畴，在力学的许多领域起着重要的作用。这里提出的项目可以看作是在BTU Cottbus-Senftenberg的DFG核心设施中心“旋转流物理”进行的试点项目的自然延伸。使用了最初为DFG研究小组“MS-GWaves”设置的实验。本文提出的项目将研究非线性表面波背景下的输运和混合。重点将放在孔的碰撞，双层系统中的孔，以及由不对称力产生的非线性波。从动力学角度看，钻孔与海啸密切相关。它们通常不那么危险，但它们发生的频率要高得多，对河流和河口渔业的沉积物运输很重要。考虑到环境研究中的许多应用，收集和比较更多的实验和数值数据对于更好地理解是很重要的。