| 动力效应对民机起飞构型气动特性影响的数值研究 |
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| 引用本文： | 郭少杰,周培培,王斌,时晓天.动力效应对民机起飞构型气动特性影响的数值研究[J].航空动力学报,2016,31(7):1638-1648. |
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| 作者姓名： | 郭少杰 周培培 王斌 时晓天 |
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| 作者单位： | 中国航天科技集团公司 中国航天空气动力技术研究院, 北京 100074 |
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| 基金项目： | 国家自然科学基金（11302213） |
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| 摘 要： | 采用在点对点多块结构化网格系统上求解三维可压缩雷诺平均N-S（Navier-Stokes）方程的方法，研究了发动机动力效应对民机起飞构型气动特性的影响.首先，通过涡轮动力模拟器风洞试验模型及民机高升力构型标准模型，对研究方法进行了验证，计算和试验结果的良好吻合说明研究方法用于模拟发动机动力效应及预测民机高升力构型气动特性是可行的.其次，针对分别安装通气短舱和动力短舱的某翼吊涡扇发动机民机起飞构型，研究了发动机动力效应对其气动特性的影响规律.结果表明:在通气短舱基础上预测的起飞最大升力系数、失速迎角以及阻力和力矩，在考虑动力效应后会产生明显的不同.动力效应可使外形最大升力系数增大并延迟机翼失速，但同时也带来了低头力矩增大和升阻比降低的不利影响.建议在对机翼及其高升力装置设计结果的数值校核中使用考虑进排气的动力短舱代替目前常用的通气短舱，这能为设计改进提供更可靠的依据.
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| 关 键 词： | 动力效应 起飞构型 失速特性 通气短舱 动力短舱 |
| 收稿时间： | 2016/1/21 0:00:00 |
Numerical investigation for influence of powered effect on aerodynamic characteristics of civil aircraft take-off configuration |
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| GUO Shao-jie,ZHOU Pei-pei,WANG Bin and SHI Xiao-tian.Numerical investigation for influence of powered effect on aerodynamic characteristics of civil aircraft take-off configuration[J].Journal of Aerospace Power,2016,31(7):1638-1648. |
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| Authors: | GUO Shao-jie ZHOU Pei-pei WANG Bin and SHI Xiao-tian |
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| Affiliation: | China Academy of Aerospace Aerodynamics, China Aerospace Science and Technology Corporation, Beijing 100074, China |
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| Abstract: | To investigate the influence of engine powered effect on aerodynamics characteristics of civil aircraft at takeoff condition, the method was employed to solve the 3-D compressible Reynolds-averaged N-S(Navier-Stokes) equations on a multi-block structured grid. Firstly, the turbine powered simulator model and a high-lift standard model were computed to validate the reliability of method; the excellent agreements between computational and experimental data demonstrated that the method was feasible to predict the engine power effect and flow field around a civil aircraft high lift configuration. Secondly, the engine power effect on aerodynamic characteristics of a typical civil aircraft were researched with flow-through and powered nacelles. Results show that aerodynamic characteristics based on powered nacelles differ obviously from flow-through ones. It''s recommended that the engine power effect should be considered with powered nacelle in numerical simulation to gain more credible aerodynamic characteristics. |
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| Keywords: | powered effect take-off configuration stall characteristics flow-through nacelle powered nacelle |
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