Hydrodynamic processes during filling and emptying of aerated underground pumped storage reservoirs

地下抽水蓄能电站的发展需要对地下抽水蓄能水库的整体水流效应和局部水流过程有基本的认识。该项目的目的是系统地描述地下抽水蓄能水库中的水流过程，这些水流过程取决于流出量的变化的几何形状。应确定渠道长度、渠道横截面、渠道数量、渠道坡度以及流量、水位和截流装置的开启或关闭速率等单个因素对地下抽水蓄能电站功能的影响，从而为结构和功能设计提供技术基础。为了了解局部和全局流动过程作为未来设计的基础，并在物理基础上进行描述，进行了系统的物理模型测试和数值2D和3D建模作为混合建模的一部分。

For the development of underground pumped storage plants the fundamental knowledge of the global flow effects and the local flow processes in the underground pumped storage reservoir is necessary. The aim of this project is the systematic description of the flow processes in underground pumped storage reservoirs which arise depending on the geometry through the changing of the outflow. The effect of the individual factors channel length, channel cross section, number of channels, channel slope as well as flow rate, water level and opening or closing rate of the closure devices on the functionality of underground pumped storage plants should be determined, thus developing the technical basis for a structural and functional design. To understand the local and global flow processes as a basis for the future design and to describe on a physical basis, systematic physical model tests and numerical 2D and 3D modeling as part of a hybrid modeling are carried out.