非牛顿撞击射流破碎的直接数值模拟
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- 论文作者：朱呈祥 ; 陈荣钱 ; 尤延铖
- 年：2016
- 作者机构：厦门大学航空航天学院;
- 论文关键词：非牛顿 ; 撞击射流 ; 直接数值模拟 ; 对角射流 ; 破碎机理
- 会议召开时间：2016-08-17
- 会议录名称：中国航天第三专业信息网第三十七届技术交流会暨第一届空天动力联合会议论文集
- 语种：中文
- 分类号：V434
- 学会代码：HTDZ
- 会议名称：中国航天第三专业信息网第三十七届技术交流会暨第一届空天动力联合会议
- 会议地点：中国陕西西安
- 主办单位：中国航天第三专业信息网、中国航天科技集团公司科技委、中国航天科工集团公司科技委
- 学会名称：中国航天第三专业信息网
- 页数：8
- 文件大小：2550k
- 原文格式：D
- 会议级别：全国
摘要
非牛顿流体的撞击破碎在液体火箭推进系统中被广泛应用,然而人们对流体的破碎物理机制却知之甚少。本文拟采用直接数值模拟工具,研究两个夹角90°等直径射流的低速撞击现象,分析二者形成的单一对角射流特征和破碎机理。结果表明,单一对角射流的直径较原射流直径大,并在头部形成液滴诱导破碎的发生,同时,对角射流表面不稳定波的发展还会形成新的弯曲波破碎,并产生卫星液滴及液滴的融合。伴随两股射流撞击的发生,气液两相交界面的面积也不断减小。
引文
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[2]Eggers J.and Villermaux E.,Physics of liquid jets[J],Rep.Prog.Phys.,2008,71:036601.
[3]Gorokhovski M.and Herrmann M.,Modeling primary atomization[J],Annu.Rev.Fluid Mech.,2008,40:343-366.
[4]Ciezki H.K.,Negri M.,Hurttlen J.,Weiser V.,Naumann K.W.and Ramsel J.,Overview of the German Gel Propulsion Technology program[C].AIAA 2014-3794.
[5]Ramasubramanian C.,Notaro V.and Lee J.G.,Characterization of near-field spray of nongelled-and gelled impinging doublets at high pressure[J].J.Propul.Power,2015,31(6):1642-1652.
[6]Yang L.J.,Fu Q.F.,Qu Y.Y.,Gu B.and Zhang M.Z.,Breakup of a power-law liquid sheet formed by an impinging jet injector[J].Int.J.Multiphase Flow,2012,39:37-44.
[7]杨伟东,张蒙正,凝胶推进剂流变及雾化特性研究与进展[J].火箭推进,2005,31(5):37-42.
[8]夏振炎,李珍妮,李建军,田砚,撞击式射流破碎特性的实验研究[J].天津大学学报,2015,已接收。
[9]Xiao H.,Shi Y.,Xu Z.,Kim L.S.,Li D.Y.and Lyu S.K.,Atomization characteristics of gelled hypergolic propellant simulants[J].Int.J.Precis.Eng.Man.,2015,16(4):743-747.
[10]邓寒玉,封锋,武晓松,卓长飞,曹琪,杨绪钊,基于扩展TAB模型的凝胶液滴二次雾化特性研究[J].推进技术,2015,36(11):1734-1740.
[11]Ma D.J.,Chen X.D.,Khare P.and Yang V.,Atomization patterns and breakup characteristics of liquid sheets formed by two impinging jets[C].AIAA 2011-97.
[12]刘虎,强洪夫,韩亚伟,陈福振,高巍然,幂律型凝胶推进剂射流撞击雾化SPH模拟[J].推进技术,2015,36(9):1416-1425.
[13]Hirt C.W.and Nichols B.D..Volume of fluid(VOF)method for the dynamics of free boundaries[J].J.Comput.Phys.,1981,39:201-225.
[14]Rider W.J.and Kothe D.B..Reconstructing volume tracking[J].J.Comput.Phys.,1998,141:112-152.
[15]Schlottke J.and Weigand B..Direct numerical simulation of evaporating droplets[J].J.Comput.Phys.,2008,227:5215-5237.
[16]Gomma H.,Kumar S.,Huber C.,Weigand B.,and Peters B..Numerical comparison of 3D jet breakup using a compression scheme and an interface reconstruction based VOF-code[C].24th ILASSEurope,Estoril,Portugal,2011.
[17]Motzigemba M.,Roth N.,Bothe D.,Warnecke H.J.,Pruess J.,Wielage K.and Weigand B..The effect of non-Newtonian flow behavior on binary droplet collisions:VOF-simulation and experimental analysis[C].Proceedings of ILASS-Europe,Zaragoza,Spain,2002.
[18]Focke C.and Bothe D..Computational analysis of binary collisions of shearthinning droplets[J].J.Non-Newton.Fluid Mech.,2011,166:799-810.
[19]Zhu C.,Ertl M.and Weigand B..Numerical investigation on the primary breakup of an inelastic non-Newtonian liquid jet with inflow turbulence[J].Phys.Fluids,2013,25:083102.
[20]Schroeder J.,Lederer M.L.,Gaukel V.and Schuchmann H.P..Effect of atomizer geometry and rheological properties on effervescent atomization of aqueous polyvinylphrrolidone solution[C].24th ILASSEurope,Estoril,Portugal,2011.
[21]Batchelor G.K..The theory of homogeneous turbulence[M],Cambridge University Press,Cambridge,1953.
[22]Bremond N.,Clanet C.and Villermaux E.,Atomization of undulating liquid sheets[J],J.Fluid Mech.2007,585:421-456.
[23]Qian J.and Law C.K.,Regimes of coalescence and separation in droplet collision[J],J.Fluid Mech.,1997,331:59-80.
[24]Miesse C.C.,Correlation of experimental data on the disintegration of liquid jets[J],Ind.Eng.Chem.,195547:1690.