Investigations of the influence of leakage and diffusion of hydrogen-doped natural gas pipelines by numerical simulation
DOI:
https://doi.org/10.24425/ather.2025.154181Abstract
The leakage of natural gas pipelines will waste energy and damage the environment. Research on the leakage and diffusion features of hydrogen-doped natural gas is beneficial to the safe management of natural gas pipelines. This paper established a numerical model used for simulating and computing the diffusion of hydrogen-doped natural gas. Then, simulation experiments were conducted. First, the model accuracy was verified through experiments, and the appropriate mesh number of the model was determined. Then, the influence of different hydrogen blending ratios and various leakage hole diameters on the leakage and diffusion of gas was calculated. Under the same diffusion time, the higher the hydrogen content in the gas, the higher the diffusion rate of methane and hydrogen, and the diffusion rate of hydrogen had the most obvious change. Under the same diffusion time, the closer to the leakage hole, the higher the concentration of natural gas, and the concentration at the monitoring points at the same level differed little.References
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