全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

电磁激励谐振对射流碎裂过程的促进作用

, PP. 91-96

Keywords: 汽车工程,射流碎裂长度,电磁激励谐振,量纲一色散关系式

Full-Text   Cite this paper   Add to My Lib

Abstract:

根据量纲一色散关系式数值计算得到的射流碎裂点最不稳定波数,在射流试验台上对平面液膜射流进行电磁激励谐振,采用闪光摄影技术对有无电磁激励谐振的液膜射流碎裂过程进行比较试验研究。结果表明电磁激励谐振对于射流的碎裂过程影响很大,按照量纲一色散关系式计算所得的表面波最不稳定波数设置的电磁激励谐振能够大幅度缩短射流的碎裂长度,静止空气环境中射流的碎裂长度缩短了17%~60%,空气助力环境中射流的碎裂长度缩短了13%~52%,明显改善了一级雾化的效果。

References

[1]  曹建明.喷雾学[M].北京:机械工业出版社,2005.
[2]  杜 青,刘 宁,杨延相,等.受激液体燃料射流表面波规律初探[J].内燃机学报,2001,19(6):511-516. DU Qing,LIU Ning,YANG Yan-xiang,et al.Preliminary study on surface waves of excited liquid fuel jets[J].Transactions of CSICE,2001,19(6):511-516.
[3]  Clarck C J,Dombrowski N.Aerodynamic instability and disintegration of inviscid liquid sheets[J].Proceedings Research Society Lond A,1972,329:467-478.
[4]  Jazayeri S A.Nonlinear analysis and experimental investigation of liquid sheet breakup[D].Victoria:University of Victoria,1997.
[5]  Jazayeri S A,Li X G.Nonlinear instability of plane liquid sheets[J].Journal of Fluid Mechanics,2000,406:281-308.
[6]  Rangel R H,Sirignano W A.Nonlinear growth of Kelvin-Helmholtz instability:effect of surface view tension and density ratio[J].Physical fluids,1988,31:1845-1855.
[7]  Lozano A,Olivares A G,Dopazo C.The instability growth leading to a liquid sheet breakup[J].Physical Fluids,1998,10:2188-2197.
[8]  Tharakan T,John,Ramamurthi K,et al.Nonlinear breakup of thin liquid sheets[J].Acta Mechanica,2002,156:29-46.
[9]  曹建明,冯振宇.液膜喷射色散关系式的非线性稳定性推导[J].长安大学学报:自然科学版,2009,29(6):93-102. CAO Jian-ming,FENG Zhen-yu.Derivation on the dispersion relations of liquid film in sprays by nonlinear stability theory[J].Journal of Chang'an University:Natural Science Edition,2009,29(6):93-102.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133