喷嘴形状对对置式撞击流反应器流场影响的数值模拟
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摘要
为了研究锥直型和矩形喷嘴对流场的影响,用Fluent软件对四口对置式撞击流反应器内部流场进行了三维数值模拟,得到入口截面上速度等值线图和等压图及Y方向上X-Y和Y-Z截面的速度分布云图,然后使用tecplot后处理软件提取数据,最后利用Origin软件作出曲线图并进行比较分析。结果表明:在入口截面上,锥直型喷嘴反应器速度大于矩形喷嘴反应器速度,流动更加稳定;Y轴纵向上,锥直型喷嘴反应器内部流体、动能转化压能更加完全;锥直型喷嘴反应器压力脉动小,流束更加集中,保障了流体拥有足够能量撞击。为对置式撞击流的工业化设计提供了理论依据。
In order to study the influence of different nozzle shapes on the flow field,the flow fields of the opposed impinging stream reactor with straight cone and rectangular nozzles were simulated by FLUENT software in the three-dimensional space.The velocity contour,the isobaric map on the entrance cross section and the velocity contour at X-Y,Y-Zface in the Y direction were achieved.Then Tecplot software was used to obtain the postprocessing data.At last,the curve graph made by Origin was compared and analyzed.The stimulation result shows that the velocity in the reactor with straight cone nozzle is larger and more stable than that with rectangular nozzle.The kinetic energy in the reactor with straight cone nozzle is more fully converted to pressure energy in the Ydirection.The reactor with straight cone nozzle has less pressure fluctuation and more concentrated stream,which preserves enough energy to impinge.The above findings provide a theoretical basis for the industrial design of impinging streams.
In order to study the influence of different nozzle shapes on the flow field,the flow fields of the opposed impinging stream reactor with straight cone and rectangular nozzles were simulated by FLUENT software in the three-dimensional space.The velocity contour,the isobaric map on the entrance cross section and the velocity contour at X-Y,Y-Zface in the Y direction were achieved.Then Tecplot software was used to obtain the postprocessing data.At last,the curve graph made by Origin was compared and analyzed.The stimulation result shows that the velocity in the reactor with straight cone nozzle is larger and more stable than that with rectangular nozzle.The kinetic energy in the reactor with straight cone nozzle is more fully converted to pressure energy in the Ydirection.The reactor with straight cone nozzle has less pressure fluctuation and more concentrated stream,which preserves enough energy to impinge.The above findings provide a theoretical basis for the industrial design of impinging streams.
引文
[1]伍沅.撞击流性质及其应用[J].化工进展,2001,20(11):8-13.
[2]伍沅.撞击流及其在干燥中的应用[J].化学工程,1998,26(4):14-23.
[3]Tamir A.Absorption of CO2in a new two impinging streams absorber[J].Chem Eng Sci,1985,40:2149-2151.
[4]Tamir A.Absorption of acetone in a two impinging streams absorber[J].Chem Eng Sci,1986,41:3023-3030.
[5]张建伟,徐成海,伍沅,等.浸没循环撞击流反应器的流场数值模拟[J].东北大学学报,2004,25(2):156-159.
[6]刘海峰,刘辉,龚欣,等.大喷嘴间距对置撞击流径向速度分布[J].华东理工大学学报,2000,26(2):168-171.
[7]张建伟,伍沅,舒安庆,等.浸没循环撞击流反应器的压力脉动特性[J].化工学报,2005,56(2):266-269.
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[9]邱金梁,李成植,张建伟.两组同轴相向撞击流反应器流场的仿真研究[J].化工机械,2007,34(6):321-325.
[10]杨侠,余蓓,郭钊,等.多喷嘴对置式撞击流反应器流场的数值模拟[J].化工进展,2013,32(7):1480-1483.
[11]付英杰,魏英杰,张钟嘉,等.喷管内雾状气液两相流场计算分析[J].哈尔滨工业大学学报,2010,42(9):1363-1368.
[12]杨侠,刘丰良,毛志慧,等.立式循环撞击流反应器不同撞击间距下混合性能分析[J].化工进展,2012,31(6):1210-1214.
[13]杨侠,毛志慧,梁利云,等.立式循环撞击流反应器中不同桨叶倾角及布置形式对混合性能影响的数值模拟[J].化学工程与装备,2011(12):5-9.
[14]Kostiuk L W,Bray K N C,Cheng R K.Experimental study of premixed combustion in opposed streams,Part I-Non-reacting flowfield[J].Combustion and Flame,1993,92:377-395.
[15]孔凡实,崔宝玲,金英子,等.V形喷嘴的超声速引射器的数值模拟[J].浙江理工大学学报,2013,30(4):558-563.
[16]卢义玉,王晓川,康勇,等.缩放型喷嘴产生的空化射流流场数值模拟[J].中国石油大学学报(自然科学版),2009,33(6):57-60.
[17]张新铭,罗晴,洪光,等.高压水扇形喷嘴结构参数对内部流场影响的数值模拟[J].工程热物理学报,2012,27(3):301-306.
[18]邓志安,马旭东,沈海静,等.不同形状喷嘴的射流清洗数值模拟研究[J].石油机械,2014,42(4):81-84.
[19]Denshchikov V A,Kontratev V N,Romashov A N.Interaction between two opposed jets[J].Fluid Dynamics,1978,6:924-926.
[20]Oren Y,Abde M,Tamir A.Mass transfer in an electrochemical reactor with two interacting jets[J].J Applied Electrochemistry,1992,22:950-958.
[2]伍沅.撞击流及其在干燥中的应用[J].化学工程,1998,26(4):14-23.
[3]Tamir A.Absorption of CO2in a new two impinging streams absorber[J].Chem Eng Sci,1985,40:2149-2151.
[4]Tamir A.Absorption of acetone in a two impinging streams absorber[J].Chem Eng Sci,1986,41:3023-3030.
[5]张建伟,徐成海,伍沅,等.浸没循环撞击流反应器的流场数值模拟[J].东北大学学报,2004,25(2):156-159.
[6]刘海峰,刘辉,龚欣,等.大喷嘴间距对置撞击流径向速度分布[J].华东理工大学学报,2000,26(2):168-171.
[7]张建伟,伍沅,舒安庆,等.浸没循环撞击流反应器的压力脉动特性[J].化工学报,2005,56(2):266-269.
[8]张建伟.多组同轴相向撞击流反应(混合)器:中国,200610134240.6[P].2008-07-06.
[9]邱金梁,李成植,张建伟.两组同轴相向撞击流反应器流场的仿真研究[J].化工机械,2007,34(6):321-325.
[10]杨侠,余蓓,郭钊,等.多喷嘴对置式撞击流反应器流场的数值模拟[J].化工进展,2013,32(7):1480-1483.
[11]付英杰,魏英杰,张钟嘉,等.喷管内雾状气液两相流场计算分析[J].哈尔滨工业大学学报,2010,42(9):1363-1368.
[12]杨侠,刘丰良,毛志慧,等.立式循环撞击流反应器不同撞击间距下混合性能分析[J].化工进展,2012,31(6):1210-1214.
[13]杨侠,毛志慧,梁利云,等.立式循环撞击流反应器中不同桨叶倾角及布置形式对混合性能影响的数值模拟[J].化学工程与装备,2011(12):5-9.
[14]Kostiuk L W,Bray K N C,Cheng R K.Experimental study of premixed combustion in opposed streams,Part I-Non-reacting flowfield[J].Combustion and Flame,1993,92:377-395.
[15]孔凡实,崔宝玲,金英子,等.V形喷嘴的超声速引射器的数值模拟[J].浙江理工大学学报,2013,30(4):558-563.
[16]卢义玉,王晓川,康勇,等.缩放型喷嘴产生的空化射流流场数值模拟[J].中国石油大学学报(自然科学版),2009,33(6):57-60.
[17]张新铭,罗晴,洪光,等.高压水扇形喷嘴结构参数对内部流场影响的数值模拟[J].工程热物理学报,2012,27(3):301-306.
[18]邓志安,马旭东,沈海静,等.不同形状喷嘴的射流清洗数值模拟研究[J].石油机械,2014,42(4):81-84.
[19]Denshchikov V A,Kontratev V N,Romashov A N.Interaction between two opposed jets[J].Fluid Dynamics,1978,6:924-926.
[20]Oren Y,Abde M,Tamir A.Mass transfer in an electrochemical reactor with two interacting jets[J].J Applied Electrochemistry,1992,22:950-958.