Abstract
Corona discharge denotes the effect where an electrically non-conducting fluid is ionized under the influence of strong electrical fields in proximity of an emitting electrode. This technology is used in industry for a broad range of applications, e.g. the deposition of airborne particles. The electrodynamic nature of Corona discharge is often coupled with other physical phenomena, making it a key element of multiphysical problems. In order to accurately describe and set-up a model for Corona discharge processes a guideline is presented here. It can be implemented into codes which allow the user-input of custom partial differential equations. The governing equations of the approach developed are based on Maxwell’s equations. The delicate part of calculating in an efficient way the electrical field distortion due to space charges is implemented by a Lagrange Multiplier, which allows the integrated identification of the unknown initial space charge density on the electrode. By means of a simplified test-case the results have been analytically verified. Additionally, the results of the modelling approach presented have been compared to experimental data available in literature, showing a good agreement.
Highlights
Corona discharge denotes a well-established technology to generate a continuous flow of ions in a fluid
To determine the unknown value of ρρeeee on ∂∂Ω1 an approach with a Lagrange Multiplier is recommended
By means of a Lagrange Multiplier the unknown bounday condition for the space charge density on the electrode can be computed within the set of governing equations using a constraint for the electric potential
Summary
Corona discharge denotes a well-established technology to generate a continuous flow of ions in a fluid. The physical nature of the Corona discharge emerges from excess surface charges on a high-voltage electrode, which enables the charging of molecules of the surrounding fluid. The Corona discharge covers a broad range of applications that require an electrically conductive fluid. In the light of worldwide renewable energy promotion efforts, the Corona discharge plays its role as anti-pollution technology for exhaust gases. Further improvement of Corona discharge based devices preferably makes use of numerical modeling, to avoid or reduce elevated development costs of test rigs. For this purpose a robust modelling approach is presented and subsequently verified and validated in this study
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
