1、基于Fluent的进气歧管空气动力学仿真共22页1 仿真(fn zhn)条件本课程报告(bogo)使用Fluent对一进气歧管进行(jnxng)空气动力学仿真。该进气歧管的入口面积为5026.55,单个出口(ch ku)面积为2552.67,如图所示。根据四冲程6缸发动机的工作循环表,将进气压力分成36种工况。曲轴转角(deg)第一缸第二缸第三缸第四缸第五缸第六缸0-1800-60进气压缩作功进气排气作功60-120排气压缩120-180作功进气180-360180-240压缩排气240-300进气作功300-360排气压缩360-540360-420作功进气420-480压缩排气480-54
2、0进气作功540-720540-600排气压缩600-660作功进气660-720压缩排气序号曲轴转角(deg)进气道末端的压力值(pa)第一缸第二缸第三缸第四缸第五缸第六缸120680008500024010000085000360880008500048072000510066000612060000714085000680008160850001000009180850008800010200720001122066000122406000013260680008500014280100000850001530088000850001632072000173406600018360600
3、001938085000680002040085000100000214208500088000224407200023460660002448060000255006800085000265201000008500027540880008500028560720002958066000306006000031620850006800032640850001000003366085000880003468072000357006600036720600002 仿真(fn zhn)步骤基于(jy)以上条件对进气歧管进行空气动力学仿真。讲进气歧管模型导入到Gambit中。建立实体(sht),进行布
4、尔操作。获得进气(jn q)歧管内的空间模型。对模型进行(jnxng)边角(bin jio)优化处理(chl)边角(bin jio)优化后的结果优化后对模型划分(hu fn)网格划分网格数165万设置(shzh)边界条 件将模型(mxng)以mesh格式导出在fluent中导入mesh模型(mxng)检查网格并定义长度(chngd)单位检查(jinch)网格显示(xinsh)网格设置(shzh)求解器使用(shyng)湍流(tunli)模型边界条件设置(shzh)求解(qi ji)初始化设置(shzh)监视器求解(qi ji)计算求解(qi ji)完成绘制(huzh)速度矢量绘制(huzh)压
5、力分布图统计(tngj)质量流量3 结果(ji gu)统计进气(jn q)歧管入口流量序号曲轴转角(deg)入口序号曲轴转角(deg)入口质量流体积流质量流体积流kg/sm3/skg/sm3/s1200.890.7266193800.86450.70572400.44520.3635204000.40490.33063600.69210.565214200.6880.56164800.50410.4115224400.52280.426751000.55310.4516234600.57380.468461200.59820.4883244800.62080.506871400.88440.7
6、219255000.88930.72681600.46170.3769265200.38720.316191800.69490.5672275400.69330.566102000.52080.4252285600.51550.4208112200.57010.4654295800.56610.4621122400.61880.5051306000.61270.5001132600.87550.7147316200.88170.7198142800.3650.298326400.43360.3539153000.68690.5607336600.69810.5699163200.52180.4
7、26346800.51970.4243173400.57370.4683357000.57170.4667183600.62140.5072367200.620.506进气(jn q)歧管出口流量,详细(xingx)数据请看附件序号曲轴转角(deg)第一缸质量流体积流kg/sm3/s1200.511450.41752400.05890.0483600.31280.25544800.50410.411551000.55310.451661200.59820.488371400.33850.276381600.36710.299791800.35210.2874序号曲轴转角(deg)第二缸质量流体
8、积流kg/sm3/s255000.52440.428126520-0.0002-0.0001275400.31760.2592285600.51550.4208295800.56610.4621306000.61270.5001316200.34050.278326400.37540.3064336600.36280.2962序号曲轴转角(deg)第三缸质量流体积流kg/sm3/s132600.5240.427714280-0.0176-0.0143153000.31930.2606163200.52180.426173400.57370.4683183600.62140.5072193800
9、.32610.2662204000.37930.3096214200.35730.2917序号曲轴转角(deg)第四缸质量流体积流kg/sm3/s316200.54120.4418326400.0580.0475336600.33530.2737346800.51970.4243357000.57170.4667367200.620.5061200.378640.3092400.38630.31543600.37930.31序号曲轴转角(deg)第五缸质量流体积流kg/sm3/s71400.54590.445681600.09470.077291800.34280.2798102000.520
10、80.4252112200.57010.4654122400.61880.5051132600.35160.287142800.38260.3124153000.36760.3001序号曲轴转角(deg)第六缸质量流体积流kg/sm3/s3803800.53840.43954004000.02560.02094204200.33070.274404400.52280.42674604600.57380.46844804800.62080.50685005000.36490.29795205200.38740.31635405400.37570.3067内容摘要(1)1 仿真条件本课程报告使用Fluent对一进气歧管进行空气动力学仿真(2)1 仿真条件本课程报告使用Fluent对一进气歧管进行空气动力学仿真(3)2 仿真步骤基于以上条件对进气歧管进行空气动力学仿真(4)获得进气歧管内的空间模型
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