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首页> 外文期刊>Journal of loss prevention in the process industries >Locating the gas leakage source in the atmosphere using the dispersion wave method
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Locating the gas leakage source in the atmosphere using the dispersion wave method

机译：使用分散波法定位大气中的气体泄漏源

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摘要

A new and simple method for locating emission source was proposed in this work based on gas dynamic dispersion information. The simulation of the unsteady state dispersion of leakage gas emission from the geo-sequestration project showed that the transportation process of emission gases in the atmosphere is similar to wave propagation, and the time parameter of the dispersion wave is linearly related to the downwind distance. Therefore, monitoring the dispersion wave at different downwind positions can be used to estimate the leakage source position. An estimation formula for locating emission sources was derived. First, an estimation formula for locating emission sources was derived under some initial assumptions. Then, the deviation of the location formula was investigated using a computational fluid dynamics (CFD) model and analytic solution to get the offset distance under different conditions. The results showed that the average distance is stable for a certain atmosphere and terrestrial conditions. This method needs no more than 3 sensors' dynamic information to locate the emission source, and hence it is highly useful for conditions with limited sensors. A numerical test demonstrated that the absolute error of the source estimation is within the range of 1-30 m. Finally, experimental tests were conducted to verify the feasibility of the source location with dispersion waves. Therefore, the dispersion wave monitor is a potentially simple and feasible way to estimate the source location for gas emission event management with limited sensors in the process industries.
机译：基于气体动态分散信息，提出了一种新的和简单的定位发射源的方法。从地理封存项目中泄漏气体发射的不稳定状态分散的模拟表明，大气中的发光气体的运输过程类似于波传播，并且色散波的时间参数与向下距离线性相关。因此，监视不同下行位置的色散波可用于估计泄漏源位置。衍生出用于定位发射源的估计公式。首先，在一些初始假设下衍生出用于定位发射源的估计公式。然后，使用计算流体动力学（CFD）模型和分析解决方案来研究位置公式的偏差，以在不同条件下获得偏移距离。结果表明，一定的气氛和陆地条件平均距离是稳定的。该方法不需要超过3个传感器的动态信息来定位发射源，因此对于具有有限传感器的条件非常有用。数值测试表明源估计的绝对误差在1-30米范围内。最后，进行了实验测试以验证源位置与色散波的可行性。因此，色散波监测是一种潜在的简单和可行方法，用于估计在过程行业中具有有限传感器的气体排放事件管理的源位置。

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