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| 单边膨胀喷管气动和红外辐射特性数值研究 | |
| 引用本文： | 张少丽,单勇,张靖周. 单边膨胀喷管气动和红外辐射特性数值研究[J]. 航空动力学报, 2011, 26(7): 1502-1508 |
| 作者姓名： | 张少丽 单勇 张靖周 |
| 作者单位： | 南京航空航天大学 能源与动力学院, 南京 210016 |
| 基金项目： | 南京航空航天大学基本科研业务费专向科研项目(NS2010036); 航空科学基金(2010ZB52019) |
| 摘 要： | 通过计算流体动力学/红外辐射(CFD/IR)数值模拟的方法,研究了单膨胀边倾角、喉道高度、侧壁长度和落压比(NPR)对单边膨胀喷管(SERN)气动性能和红外辐射特性的影响.研究结果表明:轴向推力系数随着单膨胀边倾斜角度增大而急剧减小,推力矢量角随着单膨胀边倾斜角度增大而增大;随着喷管落压比的增大,轴向推力系数先增大后减小,推力矢量角减小;随着喷管侧壁长度的增加,轴向推力系数可略微提高;单膨胀边对尾焰和喷管内壁有显著的遮挡作用,喷管下方的整体红外辐射仅为上方的10%左右;随着喷管落压比的增加,喷管上方的整体红外辐射降低. |
| 关 键 词： | 红外抑制 单边膨胀喷管 气动性能 红外辐射 数值模拟 |
| 收稿时间： | 2010-06-25 |
| 修稿时间： | 2011-05-14 |
Numerical study on aerodynamic and infrared radiation characteristics of single expansion ramp nozzle |
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| ZHANG Shao-li,SHAN Yong and ZHANG Jing-zhou. Numerical study on aerodynamic and infrared radiation characteristics of single expansion ramp nozzle[J]. Journal of Aerospace Power, 2011, 26(7): 1502-1508 | |
| Authors: | ZHANG Shao-li SHAN Yong ZHANG Jing-zhou |
| Affiliation: | College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China |
| Abstract: | Based on computational fluid dynamics/infrared radiation(CFD/IR) numerical calculations,the effects of different structures and nozzle pressure ratio(NPR) on the aerodynamic and infrared radiation characteristics were revealed for a single expansion ramp nozzle(SERN).The results show that:with increase of ramp angle,the thrust-vector angle is enlarged and axial thrust coefficient is decreased rapidly;with increase of nozzle pressure ratio,the axial thrust coefficient increases firstly and then decreases,mea... |
| Keywords: | infrared suppression single expansion ramp nozzle(SERN) pneumatic performances infrared radiation numerical simulation |
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