风速对激光检测天然气管道泄漏影响分析

Study of Wind Speed Effect on Laser Detection in Natural Gas Pipeline Leaking

文中建立了埋地天然气管道泄漏扩散模型,采用Fluent软件模拟不同风速下的天然气扩散过程,并分析了其对激光检测的影响。研究结果表明:在探测范围内,风速越大,天然气扩散范围向背风侧偏转且越贴近于地面,迎风侧光谱值越大;随着风速的增大,背风侧天然气扩散浓度变大,且光谱值越小。

Dispersion model of buried natural gas pipeline leakage was established, and natural gas dispersion process with different wind speed was simulated by using Fluent software in this paper, then wind speed influence on laser detection was ana? lyzed. The results show that in the detection distance, with the wind speed increasing, the diffusion range of natural gas deflects to the leeward side and gets closer to the ground, and the windward spectral value becomes large. Natural gas diffusion concentra? tion becomes large with the increase of wind speed in leeward, and the spectral value becomes small.