Calculation of pressure rise due to arcing faults
Calculation of pressure rise due to arcing faults
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DOI：
10.1109/61.754075
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发表时间：
1999-04
影响因子：
4.4
通讯作者：
G. Friberg;G. Pietsch
中科院分区：
文献类型：
--
作者：
G. Friberg;G. Pietsch
计算方法是确定电气装置大电流区域压力效应的重要工具。本文介绍了一种改进的标准计算方法和一种新的基于CFD(计算流体力学)的计算方法，并与现有的两种方法进行了比较。文中提到了基本的物理现象，并解释了它们在压力上升过程中的重要性。对计算方法进行了讨论，结果表明，其中一种计算方法的适用参数是几何尺寸。通过三个典型算例说明了不同计算方法的应用。基于CFD的方法适用于所有典型应用，而改进的标准计算方法仅限于小尺寸应用。
Calculation methods are an important tool for the determination of pressure effects due to high current area in electrical installations. In this contribution an improved standard calculation method and a new CFD-(computational fluid-dynamics) based method are introduced and compared with two other existing methods. The fundamental physical phenomena are mentioned and their importance for the process of pressure rise is explained. The calculation methods are discussed and it is shown that the relevant parameter for the application of one of the calculation methods is the geometrical size. The application of the different calculation methods is demonstrated with three typical examples. The CFD-based method is applicable for all typical applications whereas the improved standard calculation method is limited to small size applications.