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页数:6页
时间:2019-10-18
《长明灯热态计算简要总结》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、长明灯热态计算简要总结因为长明灯为预混燃烧,采用的计算方法和非预混的计算不一样,而且fluent6.3的预混燃烧模型不能加入辐射模型,不能加入克拉贝隆方程,只有最新的fluentl4的预混计算可以加入辐射模型。计算中火焰的传播速度是猜测值,采用相关文献的燃烧参数计算的结果A离谱。所以计算只冇参考意义。二、建模及网格三计算结果简要分析1、燃烧工况对比:计算采用了三种工况:设置使得长明灯喉口处速度分别为:18m/s,28m/s,38m/s三种工况进行对比。三种工况的火焰形状:1.95e<031.9De*031.85e*
2、D31.79e*031.74e*031.69e*D31.64e*031.58e*D31.53e<031.48e*031.43e*031.37e*031.32e*D31.27e*031.22e*D31.16e*03l.lle*031.06e*D31.Dle*039.53e3、31.53e*031.48e*031.43e*031.37e*D31.32e*D31.27e*D31・22e・031.16e*D31.H31.06e*031.Dle*D39.53e*029.00e*02ContoursofStaticTemperature(k)Jan12,2011FLUENT6.3(3d,pbns,ske)28m/s吋1000k-1950k的火焰状形I1.95e*031.90e>031.85e>031.79e*03l.74e>031.69e*031.64e>03l.58e*031.53e*031.4、48e*03gtad1.43e*031.37e*031.321031.27e*031.22e*031.16103l.lle*03l.D6e*03FLUENT6.3Od^pb^^ke)ContoursofStaticTemperature(k)Il.Dle*039.53e*029.00e>0238m/s吋1000k-1950k的火焰状形三种工况温度切面对比:1.95e*031.87e*031.79e*031.7De*031.62e*031.54e*D31.46e*031.37e*031.29e*03l.21e*0315、.13e>03LD4e*039.60e*028.78e*027.95e*027.13e*026.30e*025.48e>024.65e*023.82e>023.00e*02ContoursofStaticTemperature(k)FLUENT6.3Od^pb^^ke)18m/s时y=0切6、fli温度分布1.95e*031.87e>031.79e*031.70e*031.62e>031.54e*031.46e*031.37e*031.29e*03l.21e*031.13e>03LD4e*039.60e*028.787、e*027.95e*D27.13e*D26.30e*025.48e#024.65e・023.82e*023.00e*02ContoursofStaticTemperature(k)FLUENT6.3Od^pb^^ke)28m/s吋y=0切面温度分布1.95e>031.87e>031.79e*031.70e*031.62e>031.54e*031.46e*031.371031.29e*031.21e*031.13e>031.04e>039.60e*028.78e*027.95e*027.13e*D26.30e*0258、.47e*024.65e*023.82e*023.00e*02ContoursofStaticTemperature(k)Jan12.2011FLUENT6.3(3d.pbns.ske)38m/s时y=O切而温度分布FLUENT6.3肚飜勰)FLUENT8.3(3dapbf^,^ske)三种工况速度切面对比:2.31e*Dl2.2De<012.08e*011.96e9、09e*006.94e*D05.78e*D04.63e・D03.47e*D02.31e<001.16e*D02.82e-D3VelocityVectorsColoredByVelocityMagnitude(m/s)18m/s时y=0切血速度矢量分布3.Dle>012.86e*012.71e*012.56e>012.40e>012.25e*012.10e>0
3、31.53e*031.48e*031.43e*031.37e*D31.32e*D31.27e*D31・22e・031.16e*D31.H31.06e*031.Dle*D39.53e*029.00e*02ContoursofStaticTemperature(k)Jan12,2011FLUENT6.3(3d,pbns,ske)28m/s吋1000k-1950k的火焰状形I1.95e*031.90e>031.85e>031.79e*03l.74e>031.69e*031.64e>03l.58e*031.53e*031.
4、48e*03gtad1.43e*031.37e*031.321031.27e*031.22e*031.16103l.lle*03l.D6e*03FLUENT6.3Od^pb^^ke)ContoursofStaticTemperature(k)Il.Dle*039.53e*029.00e>0238m/s吋1000k-1950k的火焰状形三种工况温度切面对比:1.95e*031.87e*031.79e*031.7De*031.62e*031.54e*D31.46e*031.37e*031.29e*03l.21e*031
5、.13e>03LD4e*039.60e*028.78e*027.95e*027.13e*026.30e*025.48e>024.65e*023.82e>023.00e*02ContoursofStaticTemperature(k)FLUENT6.3Od^pb^^ke)18m/s时y=0切
6、fli温度分布1.95e*031.87e>031.79e*031.70e*031.62e>031.54e*031.46e*031.37e*031.29e*03l.21e*031.13e>03LD4e*039.60e*028.78
7、e*027.95e*D27.13e*D26.30e*025.48e#024.65e・023.82e*023.00e*02ContoursofStaticTemperature(k)FLUENT6.3Od^pb^^ke)28m/s吋y=0切面温度分布1.95e>031.87e>031.79e*031.70e*031.62e>031.54e*031.46e*031.371031.29e*031.21e*031.13e>031.04e>039.60e*028.78e*027.95e*027.13e*D26.30e*025
8、.47e*024.65e*023.82e*023.00e*02ContoursofStaticTemperature(k)Jan12.2011FLUENT6.3(3d.pbns.ske)38m/s时y=O切而温度分布FLUENT6.3肚飜勰)FLUENT8.3(3dapbf^,^ske)三种工况速度切面对比:2.31e*Dl2.2De<012.08e*011.96e9、09e*006.94e*D05.78e*D04.63e・D03.47e*D02.31e<001.16e*D02.82e-D3VelocityVectorsColoredByVelocityMagnitude(m/s)18m/s时y=0切血速度矢量分布3.Dle>012.86e*012.71e*012.56e>012.40e>012.25e*012.10e>0
9、09e*006.94e*D05.78e*D04.63e・D03.47e*D02.31e<001.16e*D02.82e-D3VelocityVectorsColoredByVelocityMagnitude(m/s)18m/s时y=0切血速度矢量分布3.Dle>012.86e*012.71e*012.56e>012.40e>012.25e*012.10e>0
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