航天推进技术研究院主办
Liu Chang'an,Wu Baoyuan,Yang Tiecheng.Unsteady simulation of the pitching intake[J].Journal of Rocket Propulsion,2008,34(03):23-26.
进气道俯仰振荡状态的非定常数值仿真
- Title:
- Unsteady simulation of the pitching intake
- 关键词:
- 进气道; 俯仰振荡; 非定常; Navier-Stokes方程
- Keywords:
- intake; pitching; unsteady; Navier-Stokes equation
- 分类号:
- V430
- 文献标志码:
- A
- 摘要:
- 为研究进气道俯仰振荡状态时的性能.耦合求解俯仰振荡运动和非定常Navier— Stokes方程,对平衡攻角为0。、振荡幅值为15。的进气道非定常流场进行了数值仿真。结果表 明:在俯仰振荡状态下,进气道的性能发生周期性变化。存在一个类似于领结形状的滞环。
- Abstract:
- To study the intake capacity in the pitching condition,this paper simulates the intake unsteady pitching flow by solving the unsteady Navier-Stokes equations coupled with the motion e— quation,in which the motion is pitching around the static trim attack angle of zero degree with the amplitude of fifteen degree.The simulation result shows that the unsteady flow changes with a periodicity and the intake capacity varies along a hysteresis loop which looks like a tie.
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备注/Memo
收稿日期:2008—03—14;修回日期:2008—04—25。 作者简介:柳长安(1974一)。男,博士,研究领域为冲压发动机总体设计。