Effects of different injectors on spray characteristics of power-law non-Newtonian propellant
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摘要: 为寻求幂律型非牛顿推进剂有效的雾化喷嘴形式,采用与该推进剂流变特性基本一致的水基模拟液对直流式喷嘴、撞击式喷嘴、剪切撞击式气动雾化喷嘴、气泡雾化喷嘴和离心式喷嘴进行了雾化特性实验,比较了喷嘴形式及其结构参数对雾化特性的影响.结果表明:撞击式喷嘴是一种有效的雾化形式,撞击角度和射流速度是主要影响参数;气泡雾化喷嘴是一种高效的雾化方法,在约为4%的气液比下使水基模拟液破碎并产生液滴.Abstract: In order to seek the effective injector type of the power-law non-Newtonian propellant,a water-based simulants whose rheological behavior was in accord with actual propellant was used. The injectors, including plain orifice, impinging injector, shearing impinging pneumatic atomizer, effervescent atomizer and swirling injector were investigated by experiments, and the effects of different injectors and their structural parameters on the spray characteristics were compared. The results indicate that the impinging injector is effective and its impinging angle and injection velocity are the main influencing parameters to spray property. The effervescent atomizer is an effective injector type. Water-based simulants break up and produce drops when ratio of air/liquid mass flow rate is about 4%.
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Key words:
- power-law /
- propellant /
- non-Newtonian fluid /
- atomizer /
- spray characteristics
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[1] 张蒙正,陈炜,杨伟东,等.撞击式喷嘴幂律型推进剂雾化及表征[J].推进技术,2009,30(1):46-51. ZHANG Mengzheng,CHEN Wei,YANG Weidong,et al.Atomization and characteristics of gelled propellant with impinging injector[J].Journal of Propulsion Technology,2009,30(1):46-51.(in Chinese) [2] Benveniste N,Shai R.The status of gel propellants in year 2000[C]//Proceedings of 5th International Symposium on special Topics in Chemical Propulsion.Stresa,Italy:Combustion of Energetic Materials,2000:172-194. [3] Madlener K,Ciezki H K.Some aspects of rheological and flow characteristic of gel fuels with regard to propulsion application[R].AIAA-2009-5240,2009. [4] James M G,Douglas C R,James R.Flow visualization of a rocket injector spray using gelled propellant simulants[R].AIAA 91-2198,1991. [5] 魏超,杨伟东,毛根旺.某高分子胶凝剂幂律型推进剂模拟液的流变特性[J].航空工程进展,2011,2(1):110-114. WEI Chao,YANG Weidong,MAO Genwang.Rheological behavior of a polymer-gellant gel propellants simulants[J].Advanced in Aeronautical Science and Engineering,2011,2(1):110-114.(in Chinese) [6] Mauro B.Investigation of the spray characteristics of the gelled fuel Jet A-1 using an impinging jet spray[R].DLR/IB647-2003/5,2003. [7] Chojnacki K T,Feikema D A.Spray studies of gelled liquids[R].AIAA 94-2773,1994. [8] Chojnacki K T,Feikema D A.Spray studies of gelled bipropellant simulants using planar laser induced fluorescence[R].AIAA 95-2423,1995. [9] Von Kampen J,Madlener K,Ciezki H K.Characteristic flow and spray properties of gelled fuels with regard to the impinging jet injector type[R].AIAA-2006-4573,2006. [10] Ciezki H K,Robers A,Schneider G.Investigation of the spray behavior of gelled Jet A-1 fuels using an air blast and impinging jet atomizer[R].AIAA-2002-3601,2002. [11] James M D,Kubal T D,Son S F,et al.Calibration of an impinging jet injector suitable for liquid and gelled hypergolic propellants[R].AIAA-2009-4882,2009. [12] Negri M,Helmut K C.Atomization of non-Newtonian fluids with an impinging jet injector:influence of viscoelasticity on hi ndering droplets formation[R].AIAA-2010-6821,2010. [13] Rahimi S,Natan B.Air-blast atomization of gel fuels[R].AIAA-2001-3276,2001. [14] FU Qingfei,YANG Lijun,QU Yuanyuan,et al.Linear stability analysis of a conical liquid sheet[J].Journal of Propulsion and Power,2010,26(5):955-968. [15] 王枫,富庆飞,杨立军.幂律流体液膜破裂的线性稳定性分析[J].航空动力学报,2012,27(4):876-881. WANG Feng,FU Qingfei,YANG Lijun.Linear instability analysis of a power-law liquid sheet[J].Journal of Aerospace Power,2012,27(4):876-881.(in Chinese) [16] Solomon Y,Natan B,Cohen Y.Combustion of gel fuels based on organic gallants[R].AIAA-2006-4565,2006. [17] 张蒙正,李军,陈炜,等.互击式喷嘴燃烧室燃烧效率实验[J].推进技术,2012,33(1):54-57. ZHANG Mengzheng,LI Jun,CHEN Wei,et al.Experiments on combustion efficiency for impinging injector chamber[J].Journal of Propulsion Technology,2012,33(1):54-57.(in Chinese) [18] 王枫,李龙飞,杨伟东.凝胶推进剂流动雾化特性实验系统的改进及应用[J].实验技术与管理,2012,20(1):72-75. WANG Feng,LI Longfei,YANG Weidong.Improvement of test system for gelled propellants flow and spray characteristics and its application[J].Experimental Technology and Management 2012,20(1):72-75.(in Chinese)
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