Flow field coupling between turbine and ramjet channels during turbine-based combined cycle inlet mode transition

This study investigates the flow field behavior during the mode transition of a turbine-based combined cycle (TBCC) inlet, focusing on the coupling dynamics between turbine and ramjet channels under backpressure conditions. It reveals the dual-channel interaction mechanism and identifies three distinct coupling phenomena: when both channels are started, they operate independently; when the ramjet channel is unstarted, it has no effect on the upstream flow or turbine channel; when the turbine channel is unstarted, it alters the flow structure of the ramjet channel. This study also examines flow evolution and performance parameter changes during both forward and reverse transitions. Under throttled ramjet…

• NN
  National Natural Science Foundation of China

  Awards: U2341240, 12202122, 52125603
• CP
  China Postdoctoral Science Foundation

  Awards: 2024T171142, 2023M730854