What is it about?
Corona discharge is a plasma sheath covering conductors which are raised at voltages exceeding a critical value. An appropriate physical interpretation of that phenomenon is pivotal for predicting the related fluid-dynamic performances in the outer ambient air. This investigation is mainly aimed at steering suitable support in some new directions of applied electrostatics, notably avionics, microfluidics and atmospheric geophysics, to name a few.
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Why is it important?
In spite of the use of sophisiticated theoretical resources applied to this complex problem, the given predictions are still open to criticism, maybe due to the number of unimaginable mutual interactions which are in fact neglected. The alternative strategy here adopted consists in setting up an operational model order reduction by a capillary-based scheme applied to the corona sheath. This approach is reflected by a safe and paradoxically simplified investigation, even regarding the flow performances in the far broader transport region externally to the sheath.
Perspectives
This paper is the theoretical result of unprecedended long-term experimental tests performed, until just before I retired, in the High-Voltage Lab of my Technical University. The retired status is proving very fruitful, because it offers scope for prolonged meditations which are sometimes strictly necessary, even in view of rather seminal than incremental contributions.
Francesco Lattarulo
Politecnico di Bari
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This page is a summary of: Revisiting the Methodological Approach to Some Application Oriented Unipolar Corona Investigations Focusing Interfacial Properties of the Ionised Region , IET Science Measurement & Technology, October 2018, the Institution of Engineering and Technology (the IET),
DOI: 10.1049/iet-smt.2018.5191.
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