Computational electromagnetics
Numerical modelling in computational electromagnetics, based on the group's in-house 3D FE edge element based code, continues to be the focus of the research activity at the Electricity Utilisation Group. This code is used in conjunction with the commercial code CADFIX for meshing and preand post processing the results. The latest development entails the simulation of microwaveable food packages with metallic film insertions which act as susceptors or focusing elements.
Currently the software is used to examine the effects of changing the position of the load in the cavity (allowing for + or –10% offset, the effect of changing the dielectric properties and simulation parameters to the results.
See list of publications for recent papers published in this area.
Numerical
modelling of coronas, streamers and arcs
A major work was undertaken during the past seven years to study streamers, trichel pulses and coronas. This requires the simultaneous solution of particle continuity, equations for electrons, positive and negative ions with Poisson's equation. A Finite Element Flux Corrected transport (FE-FCT) method had been devised which avoids negative results and numerical oscillations. The method is robust and had been validated with existing finite difference flux corrected transport technique (FD-FCT). Latest development entails the incorporation of Navier Stokes equations in a modified code to study temperature effects and the adoption of an automatic mesh generator technique. Visit the list of publications or to view recent papers in this area.
Simulation
of DNA Electrophoresis
The corona software has been used to numerically simulate a DNA sample pre-concentration in a mem electrophoresis device. This work is carried out with our MIT colleagues. See publications for recent papers in this topic.
The Group continues to liaise with external companies, it publishes the quarterly AMPERE NEWSLETTER and has formulated its ideas of teaching electroheat using a unified approach.
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