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Transient flow in natural gas pipeline - The effect of pipeline thermal model

机译：天然气管道中的瞬态流动-管道热模型的影响

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摘要

One-dimensional, nonisothermal gas flow model was solved to simulate the slow and fast fluid transients, such as those typically found in high-pressure gas transmission pipelines. The results of the simulation were used to understand the effect of different pipeline thermal models on the flow rate, pressure and temperature in the pipeline. It was found that simplified flow model with steady-state heat transfer term overestimates the amplitude of the temperature fluctuations in the pipeline. This result indicated that unsteady heat transfer model with the effect of heat accumulation in the surroundings of the pipeline should be used to calculate the gas parameters at locations of interest within high-pressure gas transmission pipelines.
机译：解决了一维非等温气流模型，以模拟慢速和快速流体瞬变，例如通常在高压气体传输管道中发现的瞬变。仿真结果用于了解不同管道热模型对管道中流量，压力和温度的影响。发现具有稳态传热项的简化流模型高估了管道中温度波动的幅度。该结果表明，应使用具有在管道环境中蓄热效应的非稳态传热模型来计算高压输气管道内感兴趣位置的气体参数。

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