An Improved Solution of Electrodynamics Equations for Corona Discharge Using Explicit Artificial Viscosity

A computational effort is undertaken to demonstrate how the numerical solution of electrodynamics equations may lead to a distorted solution. The computations are performed on geometries with circular and triangular cross sections using structured and unstructured grids. In addition, an analytical s...

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Published inNumerical heat transfer. Part B, Fundamentals Vol. 50; no. 4; pp. 315 - 332
Main Authors Molki, Majid, Harirchian, Tannaz, Chitta, Vijaya Lakshmi
Format Journal Article
LanguageEnglish
Published Philadelphia, PA Taylor & Francis Group 01.08.2006
Taylor & Francis
Subjects
Applied sciences
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Heat transfer
Theoretical studies. Data and constants. Metering
Charge density
Electrodynamics
Triangular pipe
Circular pipe
Numerical simulation
Secondary flow
Corona effect
Analytical solution
Convection
Heat transfer
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Summary:A computational effort is undertaken to demonstrate how the numerical solution of electrodynamics equations may lead to a distorted solution. The computations are performed on geometries with circular and triangular cross sections using structured and unstructured grids. In addition, an analytical solution is presented for the circular geometry. It is demonstrated that the solution of the charge density equation suffers from dispersion errors. This leads to distorted values of charge density, which may distort the electric body forces and eventually affect the secondary flows generated by these forces. It is found that adding a judicious amount of artificial viscosity rectifies the problem.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1040-7790
1521-0626
DOI:10.1080/10407790600604817