Effects of radiative transfer modelling on the dynamics of a propagating electrical discharge

被引：6

作者：

Kahhali, Nicolas ^{[1
]}

Riviere, Philippe ^{[1
]}

Perrin, Marie-Yvonne ^{[1
]}

Gonnet, Jean-Paul ^{[2
]}

Soufiani, Anouar ^{[1
]}

机构：

[1] Ecole Cent Paris, Laboratoire EM2C, CNRS, UPR 288, F-92295 Chatenay Malabry, France

[2] Schneider Elect, Power Business, LV Arc Breaking Modeling & Expertise Site 38 EQI, F-38050 Grenoble 9, France

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2010年 / 43卷 / 42期

关键词：

VOLTAGE CIRCUIT-BREAKER; TEMPERATURE PROFILES; EMISSION COEFFICIENTS; THERMAL PLASMAS; AIR PLASMAS; ARC PLASMAS; SF6; APPROXIMATION; TRANSPORT;

D O I：

10.1088/0022-3727/43/42/425204

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A radiative transfer methodology is developed for the modelling of coupled radiation, hydrodynamic and electromagnetic phenomena in unsteady air plasma flows. Absorption spectra are discretized according to the distribution functions of the absorption coefficients resulting from different types of radiative transitions, and this spectral model is combined with the differential P(1) approximation which is shown to predict quite accurately radiative source terms. The study of a propagating electrical arc in a 2D channel shows that radiative transfer modelling significantly affects the shape of the plasma and its dynamics. In particular, when compared with the results from the net emission coefficient method, the arc velocity is found to increase due to radiation absorption in the arc boundaries.

引用

页数：12

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