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首页> 外文会议>ASME(American Society of Mechanical Engineers) Energy Sustainability Conference; 20070627-30; Long Beach,CA(US) >NUMERICAL SIMULATION OF TURBULENT BIOGAS COMBUSTION
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NUMERICAL SIMULATION OF TURBULENT BIOGAS COMBUSTION

机译：湍流生物气燃烧的数值模拟

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摘要

Operating parameters are considered important for the biogas combustion process and the resulted flame features. The paper investigated the influence of typical parameters through numerical simulation, which include the dimension of combustor, fuel and air mass flow, and secondary air supply. The results from the simulations show that the biogas combustion behaves, to some extent, similarly to the methane combustion, yet significant differences exist between their flames. The combustion process is fairly sensitive to the geometrical and operational parameters. Biogas flame temperature is even lower compared to the methane flame temperature because biogas contains CO2 resulting in low heating value, therefore it is not straightforward to obtain stable combustion. Preheated secondary air or reduced its mass flow may have to be used in this case.
机译：操作参数被认为对沼气燃烧过程及其产生的火焰特征很重要。本文通过数值模拟研究了典型参数的影响，包括燃烧室的尺寸，燃料和空气质量流量以及二次空气供应。模拟结果表明，沼气燃烧在某种程度上类似于甲烷燃烧，但其火焰之间存在显着差异。燃烧过程对几何和运行参数相当敏感。与沼气火焰温度相比，沼气火焰温度甚至更低，因为沼气中含有二氧化碳，导致发热量低，因此要稳定地燃烧并非易事。在这种情况下，可能必须使用预热的二次空气或降低其质量流量。

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