Abstract
The SCRAM jet engine is characterized by the supersonic combustion.In the supersonic combustion,one of the most important issues is supersonic mixing.One method utilizing the flexible sheet flutter for the supersonic mixing was proposed and investigated.As flexible sheets,rubber thin sheets were examined with several elasticity moduli and sheet lengths.The main purpose of the present study is to find enhancement mixing methods for the supersonic mixing.For the examination of the mixing effect,water was injected upstream of a flexible sheet in the supersonic flow.The flow and mixmg fields were visualized by the schlieren method.The frequency and mode of flutter and the mixing effect were evaluated from the captured images.The results show that the displacement amplitude of the trailingedge of the flexible sheet is the most important for the supersonic mixing.
