The interaction between opposed jets and swirling cross-flow in a model combustor is investigated both numerically and experimentally. As the jets with sufficient strength are placed at a suitable location, relative to the swirling recirculation, the shape of the recirculation zone will be greatly altered. After been injected into the crossflow, the jets are deflected and move along spiral paths and at the same time they diffuse to the crossflow rapidly. Three methods are employed to trace the jet trajectory in the swirling cross-flow. The total velocity contour is used to identify the jet column in the near field of the jet stream. The vorticity contour is used to visualize the jet column vortices as well as the twisting process caused by the jet deflection as they penetrate further into the swirling flow. The local maximum tangential velocity method is employed to trace the jet characteristics downstream of the jet location. As jet-to-crossflow velocity ratio increases, the penetration depth increases as well, but the spiral speed decreases.
|出版狀態||Published - 1987 一月 1|
|事件||AIAA/ASME/SAE/ASEE 23rd Joint Propulsion Conference, 1987 - San Diego, United States|
持續時間: 1987 六月 29 → 1987 七月 2
|Other||AIAA/ASME/SAE/ASEE 23rd Joint Propulsion Conference, 1987|
|期間||87-06-29 → 87-07-02|
All Science Journal Classification (ASJC) codes