| 二元收-扩喷管与球形收敛调节片喷管的性能对比研究 |
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| 引用本文： | 游磊,王强,刘笑瑜. 二元收-扩喷管与球形收敛调节片喷管的性能对比研究[J]. 航空发动机, 2017, 43(4): 41-47. DOI: 10.13477/j.cnki.aeroengine.2017.04.008 |
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| 作者姓名： | 游磊 王强 刘笑瑜 |
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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;先进航空发动机协同创新中心:北京 100191 |
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| 基金项目： | 航空动力基础研究项目资助 |
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| 摘 要： | 为了对比二元收-扩喷管(2DCD)与球形收敛调节片喷管(SCFN)的性能,基于CFD数值计算软件对2种喷管在相同工作点下进行了内外流场计算与分析。数值模拟结果表明:在相同高度及飞行马赫数条件下,SCFN的流量系数相较于2DCD呈现出较大不同,推力系数则略差于2DCD;在低落压比条件下,2种喷管内流对后体阻力特性影响不大;在高落压比条件下,2种喷管内流对后体阻力特性影响较大。
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| 关 键 词： | 非轴对称喷管 数值模拟 推力系数 后体阻力系数 航空发动机 |
Comparative Study on Performance of Two Dimensional Convergent-Divergent Nozzle andSpherical Convergent Flap Nozzle |
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| YOU Lei,WANG Qiang,LIU Xiaoyu. Comparative Study on Performance of Two Dimensional Convergent-Divergent Nozzle andSpherical Convergent Flap Nozzle[J]. Aeroengine, 2017, 43(4): 41-47. DOI: 10.13477/j.cnki.aeroengine.2017.04.008 |
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| Authors: | YOU Lei WANG Qiang LIU Xiaoyu |
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| Abstract: | In order to compare the performance of two Dimensional Convergent-Divergent Nozzle (2DCD) and Spherical ConvergentFlap Nozzle (SCFN), the calculation and analysis in the internal and external flow field at the same operating point based on CFDcomputational simulation software were performed. The numerical simulation results show that under the condition of the same altitude andflight Mach number, the mass flow coefficient of SCFN compared to the 2DCD''s exhibits quite different and the thrust coefficient of SCFN isslightly worse than the 2DCD''s. Under the condition of low nozzle pressure drop ratio, internal flow of two kinds of nozzles has little effect onafter-body drag coefficient; under the condition of high nozzle pressure drop ratio, internal flow of two kinds of nozzles has a great influenceon after-body drag coefficient. |
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| Keywords: | non-axsymmetrically nozzle numerical simulation thrust coefficient after-body drag coefficient aeroengine |
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