Inverse design methodology on a single expansion ramp nozzle for scramjets
Inverse design methodology on a single expansion ramp nozzle for scramjets
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超燃冲压发动机单膨胀坡道喷嘴的逆向设计方法
DOI：
10.1016/j.ast.2019.05.054
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发表时间：
2019-09
影响因子：
5.6
通讯作者：
Song Guangtao
中科院分区：
文献类型：
--
作者：
Yu Kaikai;Xu Jinglei;Lv Zheng;Song Guangtao
为了获得良好的气动性能和与机体完全一体化，提出了一种单膨胀斜面喷管(SERN)的反设计方法。利用这种方法，可以预先确定喷管出口的流动参数和出口形状。文中介绍了该方法的具体实现过程。特征线法是一种通用的数学方法，是喷管设计方法的核心，用于喷管外形的逆向生成。并用计算流体力学(CFD)方法验证了该方法的有效性和准确性。在验证情况下，主区喷管出口马赫数的相对误差小于0.2%。然后，利用所提出的方法对SERN进行了实际设计。用常规设计方法设计了两个SERN(Sern A1和Sern A2)，验证了该方法的优越性。气动性能对比表明，在设计条件下，采用该方法设计的喷管相对于SERN A1和SERN A2的轴向推力系数分别提高了约6.3%和26.2%。用该方法设计的SERN在设计工况下的扬程提高了200%以上。此外，研究结果还表明，所提出的设计方法可以显著改善变工况下的推力系数和升力。综上所述，本研究为SERN的设计提供了一种强有力的方法。
An inverse design method on a single expansion ramp nozzle (SERN) is proposed in order to obtain good aerodynamic performance and full integration with airframes. By using this method, the flow parameters along the nozzle outlet and the shape of the outlet can be specified in advance. The details of the proposed method are introduced in this paper. Method of characteristics (MOC), known as a universal mathematical method, is the kernel of the design method and applied to generate the nozzle contour inversely. Also, the computational fluid dynamic (CFD) approaches are used to verify the effectiveness and accuracy of the proposed method. In the verification case, the relative error of the Mach number on the nozzle outlet in the main region is less than 0.2%. Then, an actual design case on SERN is performed using the proposed method. Two SERNs (SERN A1 and SERN A2) are designed using the conventional design method to examine the superiority of the proposed method. The comparison of the aerodynamic performance shows that the nozzle designed by the proposed method gains approximately 6.3% and 26.2% increments in axial thrust coefficient relative to SERN A1 and SERN A2 on the design condition, respectively. The improvement in the lift of the SERN designed by the proposed method is over 200% on the design condition. Besides that, findings also indicate that the proposed design method can offer a considerable improvement in the thrust coefficient and lift on the off-design conditions. In conclusion, the study can provide a powerful design method for SERNs.
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影响因子：
2.5
作者：
L. Doherty;M. Smart;D. Mee
通讯作者：
L. Doherty;M. Smart;D. Mee
影响因子：
1.9
作者：
H. Ogawa;R. Boyce
通讯作者：
H. Ogawa;R. Boyce
DOI：
10.1115/1.4025314
发表时间：
2014
期刊：
Journal of engineering for gas turbines and power
影响因子：
--
作者：
J. Mo;Jinglei Xu;Liuhuan Zhang
通讯作者：
J. Mo;Jinglei Xu;Liuhuan Zhang
影响因子：
5.6
作者：
K. Yu;Jinglei Xu;Xiaofei Zhang;Shun Liu
通讯作者：
K. Yu;Jinglei Xu;Xiaofei Zhang;Shun Liu
影响因子：
2.5
作者：
T. Tsuchiya;Y. Takenaka;H. Taguchi
通讯作者：
T. Tsuchiya;Y. Takenaka;H. Taguchi