| 非失速二维振荡叶栅非定常流动数值模拟研究 |
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| 引用本文： | 张正秋,邹正平,刘火星,李琳.非失速二维振荡叶栅非定常流动数值模拟研究[J].空气动力学学报,2009,27(2). |
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| 作者姓名： | 张正秋 邹正平 刘火星 李琳 |
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| 作者单位： | 北京航空航天大学能源与动力工程学院,航空发动机气动热力重点实验室,航空发动机数值仿真研究中心,北京,100191 |
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| 基金项目： | 国家自然科学基金，高等学校学科创新引智计划 |
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| 摘 要： | 进一步完善了非定常雷诺平均N-S方程求解程序,借助快速网格生成方法,对周期性俯仰运动下NACA0012叶栅的非失速绕流问题进行了数值模拟研究,并分析了振荡叶栅的迟滞效应以及俯仰运动各个参数对迟滞效应的影响.数值模拟结果与实验结果对比表明,本文发展的数值模拟方法是可靠的;结果还表明,随着振幅,折合频率的增加迟滞效应增强,平均攻角对迟滞效应无影响;保持无量纲参数--振幅和折合频率的乘积--恒定时,迟滞效应相同.
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| 关 键 词： | 非失速 振荡叶栅 迟滞效应 |
A numerical study of unstalled two dimentional flow on an oscillating cascade |
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| ZHANG Zheng-qiu,ZOU Zheng-ping,LIU Huo-xing,LI Lin.A numerical study of unstalled two dimentional flow on an oscillating cascade[J].Acta Aerodynamica Sinica,2009,27(2). |
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| Authors: | ZHANG Zheng-qiu ZOU Zheng-ping LIU Huo-xing LI Lin |
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| Institution: | National Key Lab.on Aero-Engines;School of Jet Prop.;Aeroengine Numerical Simulation Research Center;Beijing Univ.of Aero.& Astro.;Beijing 100191;China |
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| Abstract: | Numerical simulation of 2-D unsteady viscous flow around oscillating NACA0012 airfoil is carried out with dual-time stepping method and mixing length turbulence model and the numerical results are in good agreement with the published data of AGARD.Then the effect of oscillating amplitude,mean incidence and reduced frequency on the hysteresis loop.However a non-dimensional analysis reveals that the hysteresis effect would be the same just provided the same multiplying numerical value of reduced frequency and... |
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| Keywords: | unstalled oscillating cascade hysteresis effect |
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