| 低热值煤层气燃烧器结构设计的数值模拟 |
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| 引用本文： | 张力,蔡松,蒲舸.低热值煤层气燃烧器结构设计的数值模拟[J].煤炭转化,2010,33(4). |
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| 作者姓名： | 张力 蔡松 蒲舸 |
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| 作者单位： | 重庆大学动力工程学院,400030,重庆 |
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| 基金项目： | 重庆市自然科学基金重点资助项目(CSTC,2009BA6067) |
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| 摘 要： | 对改进前后两种低热值煤层气燃烧器进行了全尺寸的三维数值模拟,给出了两种燃烧器速度场、温度场和浓度场的分布情况,结果表明,改进后的燃烧器在产生中心回流区和外回流区的同时,还能具有较好的射流刚性;具有较宽的甲烷体积浓度调节比,在燃烧甲烷浓度较低(20%,体积分数)的煤层气时,还能保持较高的燃烧温度,高温区域分布较广,燃烧效率高.
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| 关 键 词： | 低甲烷体积浓度 煤层气燃烧器 数值模拟 |
NUMERICAL SIMULATION ON STRUCTURAL DESIGN OPTIMIZATION OF LOW CALORIFIC VALUE COAL-BED GAS COMBUSTOR |
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| Zhang Li,Cai Song,Pu Ge.NUMERICAL SIMULATION ON STRUCTURAL DESIGN OPTIMIZATION OF LOW CALORIFIC VALUE COAL-BED GAS COMBUSTOR[J].Coal Conversion,2010,33(4). |
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| Authors: | Zhang Li Cai Song Pu Ge |
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| Affiliation: | Zhang Li Cai Song and Pu Ge(Power Engineering School,Chongqing University,400030 Chongqing) |
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| Abstract: | The full-size three-dimensional numerical simulation study on two kinds of low calorific value coal-bed gas burner before and after improvement is conducted.Two kinds of bur-ner's velocity field,temperature field and concentration field distribution are presented.The results show that the improved burner not only produces central backflow region and outer backflow region,but also has good jet flow rigidity.The improved burner has a wide ratio for regulating the concentration of methane when combusts the gas... |
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| Keywords: | low-volume concentration of methane coal bed gas burner numerical simulation |
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