READ ME File For 'Critical Analysis of Partial Discharge Dynamics in Air Filled Spherical Voids - Plot Data'

Dataset DOI: 10.5258/SOTON/D0419

ReadMe Author: George Callender, University of Southampton

This dataset supports the publication:

Critical analysis of partial discharge dynamics in air filled spherical voids, G. Callender et al.

Contents
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This dataset contains data which are used for generating Fig.2 to Fig.13. These figures are plotted using MATLAB. The data contains x and y data for line graphs and triangular surface data for surface plots. 
The figures can be generated using the built-in MATLAB functions "plot" for line graphs and "trisurf" for surface plots.

The figures are as follows:

Fig. 2  Comparison of photoionisation rate calculated using full model of photoionisaton and Helmholtz model with modified boundary conditions. The Gaussian collisional ionisation production
        rate was centred at: (a) z0 = 0 mm and (b) z0 = 0.5 mm.

Fig. 3  Absolute error between the photoionisation rate calculated using the full model and Helmholtz model. In the region close to the void boundary where the error is largest the collisional
	ionisation rate dominates photoionisation.

Fig. 4  Element size surface plot of the numerical mesh used for the simulations. Mesh scaling was developed based on the plasma dynamics observed.

Fig. 5  Discharge dependent variables at 1 ns (I): (a) electron number density, (b) positive ion number density, (c) electric field magnitude.

Fig. 6  Discharge dependent variables at 7 ns (II): (a) electron number density, (b) positive ion number density, (c) electric field magnitude.

Fig. 7  Discharge dependent variables at 15 ns (III): (a) electron number density, (b) positive ion number density, (c) electric field magnitude.

Fig. 8  Discharge dependent variables at 60 ns (IV): (a) electron number density, (b) positive ion number density, (c) electric field magnitude.

Fig. 9  Polar plot of surface charge density on the void surface, with polar angle \phi, at different times during the discharge at 9 kV. The stages corresponding to each time are also provided.

Fig. 10  Predicted apparent current on ground electrode at different applied voltages.

Fig. 11  Figure showing the z component of the electric field magnitude the symmetry axis inside the void at 60 ns for the 9 kV discharge simulation and the residual field calculated using (2).

Fig. 12  Discharge dependent variables at 6 ns for the subsequent discharge: (a) electron number density, (b) positive ion number density, (c) electric field magnitude.

Fig. 13  Polar plot of surface charge density on the void surface due to the discharge at 9 kV, the subsequent discharge at 18 kV and the resulting distribution.


Geographic location of data collection: University of Southampton, U.K.


Dataset available under a CC BY 4.0 licence


Publisher: University of Southampton, U.K.


Date: February 2018