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燃烧法合成碳纳米管是一个全新的技术和研究领域,有极大的发展前景。提出了V型火焰合成碳纳米管的方案,并利用FLUENT软件对其燃烧过程进行了数值模拟。经过对几种模拟的结果进行分析和比较,结果表明:模拟结果所设的边界条件有利于碳纳米管的生成,可应用于进行实验的理论指导。所得出的结论与理论推断基本上相吻合,而且几种形态的结果理论上相互统一。通过对数值计算结果与相关文献比较,验证了计算结果的合理性与可用性。“热解”火焰把热和合成碳纳米管过程分开,可在范围较大的热解区域收集碳纳米管。V型热解火焰的易于稳定、控制,可能是实现工业放大的一种比较合适的方式。数值模拟研究结果将对实验提供预期参考和帮助。
Combustion Synthesis of carbon nanotubes is a new technology and research areas, have great prospects for development. Proposed V-flame synthesis of carbon nanotubes program, and the use of FLUENT software for its combustion process were numerically simulated. After analyzing and comparing the results of several simulations, the results show that the boundary conditions set by the simulation results are conducive to the generation of carbon nanotubes, which can be applied to the theoretical guidance for experiments. The conclusions drawn are basically consistent with the theoretical inference, and the results of several forms are theoretically unified with each other. By comparing numerical results with related literatures, the rationality and usability of the calculation results are verified. The “pyrolysis” flame separates the heat from the synthesis of carbon nanotubes and allows the collection of carbon nanotubes over a wide range of pyrolysis zones. V-type pyrolysis flame easy to stabilize, control, may be to achieve industrial amplification is a more appropriate way. Numerical simulation results of the experiment will provide the expected reference and help.