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| 定常吹/吸气控制凸包分离的数值研究 | |
| 引用本文： | 季路成,林峰,Marco P Schoen.定常吹/吸气控制凸包分离的数值研究[J].航空动力学报,2006,21(1):25-30. |
| 作者姓名： | 季路成 林峰 Marco P Schoen |
| 作者单位： | 1. 中国科学院,工程热物理研究所,北京,100080 2. Applied Research Center (ARC) Indiana Institute of Technology,Fort Wayne, IN 46803, USA 3. Measurement and Controls Enginering Research Center (MCERC),College of Engineering,Idaho State University,Pocatello,ID 83209,USA |
| 摘 要： | 针对凸包流动分离主动控制开展了参数化数值研究.凸包模型为NASA设计用于流动分离主动控制的内外流通用模型.重点研究运行参数变化时定常吹/吸气影响.首先采用试验数据标定了所开发程序,然后进行了一系列参数化数值模拟.结果显示:定常吸气作用明显不同于定常吹气.对于所给定几何模型,不管吸气流量增加到多大,吸气都无法消除分离,而吹气可以做到.详细展示流动结构并讨论了流动机理. |
| 关 键 词： | 航空、航天推进系统 流动控制 分离流动 凸包流动 计算流体力学 |
| 文章编号： | 1000-8055(2006)01-0025-06 |
| 收稿时间： | 2005/1/24 0:00:00 |
| 修稿时间： | 2005年1月24日 |
Numerical Investigations of Separation Control of a Hump Model with Steady Suction and Injection |
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| JI Lu-cheng,LIN Feng and Marco P Schoen.Numerical Investigations of Separation Control of a Hump Model with Steady Suction and Injection[J].Journal of Aerospace Power,2006,21(1):25-30. | |
| Authors: | JI Lu-cheng LIN Feng and Marco P Schoen |
| Institution: | Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing100080, China;;Applied Research CenterARC), Indiana Institute of Technology, Fort Wayne, IN 46803, USA;;Measurement and Controls Enginering Research CenterMCERC), College of Engineering, Idaho State University, Pocatello, ID 83209, USA |
| Abstract: | A series of numerical parametric studies on active control of separation flow over a hump model are presented. The model is a generic model for both internal and external flow,designated by NASA for CFD validation of active separation control.The focus is on the influence of steady suction and injection when a variety of operating parameters are varied.An in-house-use CFD code is first validated against experimental data and other CFD results,followed by a series of numerical simulations.Results show that the behaviors of steady suction are significantly different from that of steady injection.At the given geometry,the suction alone cannot completely eliminate the separation bubble in the flow-field of the hump model regardless of how much suction flow rate is used,but the injection can.The detailed flow structure and mechanisms are also presented and discussed. |
| Keywords: | aerospace propulsion system flow control separation flow hump model computational fluid dynamics |
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