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首页> 外文会议>2002 ASME International Mechanical Engineering Congress and Exposition , Nov 17-22, 2002, New Orleans, Louisiana >A Parametric Study of Surge and Flow Instabilities in Gas Pipeline Compression Systems - The Effect of Pipe Parameters on Surge Margins
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A Parametric Study of Surge and Flow Instabilities in Gas Pipeline Compression Systems - The Effect of Pipe Parameters on Surge Margins

机译：燃气管道压缩系统喘振和流量不稳定性的参数研究-管道参数对喘振裕度的影响

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There is a need to understand the effect of coupling of the flow characteristics of a compressor with that of the pipeline and how this coupling effect the stability of the flow in a compression system. This study addresses such a need by carrying out a numerical simulation of the flow in the whole compression system including the compressor, the pipeline, and the other associated flow elements. A nonlinear, one-dimensional mathematical model is adopted for the present study. In this model, the gas flow inside the pipeline is assumed one-dimensional, viscous, and compressible. A parametric study is carried out using the proposed model, with air as the working fluid, to predict the surge margins for a subscale compression system and to study the effect of pipe length and diameter on these margins. Furthermore, the effect of these geometrical parameters on the amplitude and frequency of the flow oscillations are also established by numerical experimentation.
机译：需要理解压缩机的流动特性与管道的流动特性的耦合的影响，以及这种耦合如何影响压缩系统中流动的稳定性。这项研究通过对整个压缩系统（包括压缩机，管道和其他相关的流量元件）中的流量进行数值模拟来满足这种需求。本研究采用非线性的一维数学模型。在此模型中，假定管道内部的气流是一维的，粘性的和可压缩的。使用所提出的模型，以空气作为工作流体，进行了参数研究，以预测次尺度压缩系统的喘振裕度，并研究管道长度和直径对这些裕度的影响。此外，还通过数值实验确定了这些几何参数对流动振荡的幅度和频率的影响。

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