|Table of Contents|

Effects of injecting pressure on a spray(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2009年04期
Page:
91-96
Research Field:
Publishing date:
2009-08-20

Info

Title:
Effects of injecting pressure on a spray
Author(s):
CAO Jian-ming; LI Xue-li; LIU Peng; LUO Ming; SU Hai-dong; CHEN Wen-feng
School of Automobile,Chang’an University,Xi’an 710064,Shaanxi,China
Keywords:
automobile engineering;  injecting pressure;  Rayleigh mode;  atomization mode;  breakup lengths of liquid jet
PACS:
U464.136
DOI:
-
Abstract:
A Rayleigh mode experiment of liquid film breakup process in lower injecting pressure region on liquid jet injecting test device, and an atomization mode experiment of diesel spray quality in higher pressure region on spray characteristics test device were conducted by photograph technique. A comparison analysis was made between above two experiments. The results indicate that the breakup lengths of a liquid film injected from a smaller aspect ratio nozzle with lower velocities almost linear prolong with injecting velocities increase, and no direct concern with injecting pressures in Rayleigh region. Injecting pressures effects on the liquid jet breakup lengths are only produced by injecting velocities. Injecting velocity is a stable factor on liquid jet breakup process. The spray quality is significantly improved with injecting pressure increase in atomization region, and injecting pressure and velocity become an unstable factor in liquid jet breakup process. 4 tabs, 9 figs, 19 refs.

References:

［1］曹建明.喷雾学 ［M］,北京:机械工业出版社,2005.
[2]Cao J M.Theoretical and experimental study of atomization from an annular liquid sheet ［J］.Journal of Automobile Engineering,2003,217(8):735743.
[3]Lefebvre A H.Atomization and sprays ［M］.New York:Hemisphere Press,1989.
[4]Li X G.Mechanism of atomization of a liquid jet ［C］//ASME.Proceedings of EnergySources Technology Confonrence and Exhibition.New York:ASME,1995:113120.
[5]Chen T B,Li X G.Liquid jet atomization in a compressible gas stream［J］.Journal of Propulsion and Power,1999,15(3):369376.
[6]史绍熙,杜青,秦建荣,等.液体圆射流破碎机理研究中的时间模式与空间模式 ［J］.内燃机学报,1999,17(3):205210. SHI Shaoxi,DU Qing,QIN Jianrong,et al.Temporal mode and spatial mode in the study of liquid jet breakup ［J］.Transaction of CSICE,1999,17(3):205210.
[7]Shi S X.Unstable asymmetric modes of a liquid jet ［J］.ASME Journal of Fluids Engineering,1999,121(2):379383.
[8]杜青,史绍熙,刘宁,等.液体燃料圆射流最不稳定频率的理论分析（1）:液体燃料圆射流的最不稳定频率及无量纲数的影响 ［J］.内燃机学报,2000,18(3):283287. DU Qing,SHI Shaoxi,LIU Ning,et al.A theoretical analysis of most frequency of a liquid fuel jet breakup(1):effects of dimensionless numbers on most unstable frequency ［J］.Transaction of CSICE,2000,18(3):283287.
[9]杜青,史绍熙,刘宁,等.燃料圆射流最不稳定频率的理论分析（2）:液体圆射流参数对最不稳定频率的影响及试验观察 ［J］.内燃机学报,2000,18(3):288292. DU Qing,SHI Shaoxi,LIU Ning,et al.A theoretical analysis of most unstable frequency of a liquid fuel jet breakup (2):effects of injecting parameters on most unstable frequency and experimental observation ［J］.Transaction of CSICE,2000,18(3):288292.
[10]Lin S P,Lian Z W,Creighton B J.Absolute and convective instability of a liquid sheet ［J］.Journal of Fluid Mechanics,1990,220(4):673689.
[11]Li X G,Tankin R S.On the temporal instability of a twodimensional viscous liquid sheet ［J］.Journal of Fluid Mechanics,1991,226(3):425443.
[12]Li X G.On the instability of plane liquid sheets in two gas streams of unequal velocities ［J］.Acta Mechanica,1994,106(1):137156.
[13]Li X G.Spatial instability of plane liquid sheets ［J］.Chemistry of Engineering and Science,1993,48(12):29732981.
[14]Cao J M,Li X G.Stability of plane liquid sheets in compressible gas streams ［J］.AIAA Journal of Propulsion Power,2000,16(4):623627.
[15]Rangel R H,Sirignano W A.Nonlinear growth of KelvinHelmholtz instability:effect of surface tension and density ratio ［J］.Physics of Fluids,1988,31(11):18451855.
[16]Antonio L,Antonio G O,Cesar D.The instability growth leading to a liquid sheet breakup ［J］.Physics of Fluids,1998,10(12):21882197.
[17]Jazayeri S A,Li X G.Nonlinear instability of plane liquid sheets ［J］.Journal of Fluid Mechanics,2000,406(1):281308.
[18]Tharakan T,John,Ramamurthi K,et al.Nonlinear breakup of thin liquid sheets ［J］.Acta Mechanica，2002,156(1):2946.
[19]曹建明.喷雾学研究的国际进展 ［J］.长安大学学报:自然科学版,2005,25(1):8287. CAO Jianming.Review of international evolvement of spray investigation ［J］.Journal of Changan University:Natural Science Edition,2005,25(1):8287.

Memo

Memo:
-
Last Update: 2009-08-20