Numerical analysis of controlled turbulent wake flow (B03)

子项目B3将使用分区RANS-LES方法和动态模式分解来分析双喇叭喷管与发射器结构的气动集成。在海平面模式下，将特别注意外部尾流与喷管内部分离区之间可能存在的相互卷吸和耦合。在识别相关特征模式后，将开发被动和主动流量控制装置，以降低气动载荷。之后，流量控制概念将在飞行轨迹的几个点上进行有效性、效率和设计外稳健性的评估。

Sub-project B3 will analyze the aerodynamic integration of a dual-bell nozzle into the launcher's architecture using a zonal RANS-LES approach and dynamic mode decomposition. Particular attention will be paid to possible mutual entrainment and coupling of the external wake flow with the nozzle-internal separation region in the sea-level mode. After the identification of relevant eigenmodes, passive and active flow control de-vices will be developed to reduce aerodynamic loads. Afterwards, the flow control concepts will be evaluat-ed at several points of the flight trajectory with respect to their effectiveness, efficiency, and off-design robustness.