On the modelling of the electro-hydrodynamic flow field in electrostatic precipitators

被引：40

作者：

Schmid, HJ ^{[1
]}

Stolz, S ^{[1
]}

Buggisch, H ^{[1
]}

机构：

[1] Univ Karlsruhe, Inst Mech Proc Engn & Mech, D-76128 Karlsruhe, Germany

来源：

FLOW TURBULENCE AND COMBUSTION | 2002年 / 68卷 / 01期

关键词：

body forces; electro-hydrodynamics; perturbation analysis; secondary flows; turbulence models;

D O I：

10.1023/A:1015666116174

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Electro-hydrodynamic (EHD) flows are investigated theoretically and numerically in this paper and results are presented for the flow field in model electrostatic precipitators (EPs). The resulting flow fields are shown in various representations and explained qualitatively. Numerical calculations with different flow models (non-turbulent and RANS) were conducted to investigate the influence of the flow model on the resulting secondary flows. Furthermore, a perturbation analysis is presented, leading to a simple differential equation of the Helmholtz type. This allows a more detailed view of the important mechanisms forming the secondary flows as well as being able to obtain a very fast estimation of the resulting flow field. The calculations reveal a strong influence of a vortex formation at the beginning of the precipitation zone on the whole flow field. Furthermore, a strong effect of the boundary conditions of the electric field and the operating parameters is shown.

引用

页码：63 / 89

页数：27

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