脉冲参数对脉冲介质阻挡放电臭氧产生影响的数值模拟
Numerical Simulation for the Effects of Pulse Power Parameters on Ozone Generation by Pulsed Dielectric Barrier Discharge
查看参考文献35篇
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文摘
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在脉冲介质阻挡放电产生臭氧的过程中,脉冲参数至关重要。为研究脉冲参数对其流光传播速度和臭氧分子浓度的影响,构建了1个由流体动力学模型和包含11种粒子、29个反应的反应模型组成的准2维动力学模型并进行了数值模拟。模拟结果表明:流光传播速度和臭氧分子浓度均随脉冲峰值电压的增大而增大,随脉冲上升时间的减小而增大,在模拟工况所得流光速度范围为4.2×10~4~3.57×10~5 m/s;脉冲宽度的变化对流光传播速度与臭氧分子浓度基本无影响,但减小脉冲宽度有利于提高臭氧产率;随着脉冲上升率的增大,在流光出现后并经历相同时间时对应的电场强度更大,流光的传播速度随之加快,同时臭氧分子浓度也由于氧原子产生速率的增大而增大。该研究可以为脉冲电源的选择和优化提供参考。 |
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其他语种文摘
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The parameters of pulse power play a vital role in ozone generation by pulsed dielectric barrier discharge. To investigate effects of pulse power parameters on streamer propagation velocity and ozone density, a qusi-two-dimensional dynamic model is developed. The numerical model consists of hydrodynamic model and chemical model including 11 species and 29 reactions. The numerical results show that both streamer propagation velocity and ozone density increase with the increase of pulse peak voltage and the decrease of pulse rise time. The streamer propagation velocity varies from 4.20×10~4 m/s to 3.57×10~5 m/s. Pulse width hardly has impact on streamer propagation velocity and ozone density, but decreasing pulse width is favorable for the improvement of ozone yield. With the increase of pulse rise rate, the change of electric field strength becomes larger at the same time interval and the electric field strength is also larger at the same time after the streamer emerging. So streamer propagation velocity increases with increasing the pulse rise rate. Meanwhile, ozone density increases because the production rate of O radial increases. This work will provide a reference for choice and optimum of pulse power. |
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来源
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高电压技术
,2016,42(8):2659-2667 【核心库】
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DOI
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10.13336/j.1003-6520.hve.20160812038
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关键词
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脉冲参数
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流光传播
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臭氧产生
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脉冲介质阻挡放电
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平板型
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动力学
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数值模拟
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地址
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1.
南昌大学信息工程学院, 南昌, 330031
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南昌大学机电工程学院, 南昌, 330031
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南昌大学资源环境与化工学院, 南昌, 330031
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1003-6520 |
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学科
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物理学 |
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基金
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国家自然科学基金
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江西省青年科学家井冈之星培养对象计划项目
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江西省自然科学基金
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江西省高等学校科技落地计划
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文献收藏号
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CSCD:5795621
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