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- S.A. Viana, Dave Rodger, H. C. Lai
- IEEE Transactions on Magnetics
- 2006

This paper introduces the meshless local radial point interpolation method to model eddy-current problems for the first time. The formulation is described and results are compared with those from the ordinary finite-element simulation and the analytical solution

- Dave Rodger, H. C. Lai, R.J. Hill-Cottingham, P R Coles
- IEEE Transactions on Magnetics
- 2004

Despite worldwide efforts and many recent advances, electrical machine modeling using finite elements can be computationally very expensive, especially if three-dimensional models are required. This contribution is concerned with speeding up the process. Some examples of line start permanent magnet machines and induction motors are provided.

- P.K. Vong, H. C. Lai, Dave Rodger
- IEEE Transactions on Magnetics
- 2006

We propose a finite-element scheme which involves the use of the Lagrangian interface technique to model electromagnetic signal propagation in mixed regions of very low and high conductivity. The method has relevance to modeling underground communications in oil or gas wells. There will be a significant jump in electrical conductivity especially at theâ€¦ (More)

Executive summary Neutrino oscillations, for which there is now compelling evidence, indicate that neutrinos are massive and that the Standard Model is incomplete. The small, but non-zero, neutrino mass may have astrophysical consequences. Furthermore, CP violation in the lepton sector may underpin the mechanism by which antimatter was removed from theâ€¦ (More)

- H. C. Lai, Dave Rodger, P R Coles
- IEEE Transactions on Magnetics
- 2004

This paper describes a three-dimensional (3-D) overlapping finite-element scheme for modeling movement in electromagnetic devices, which results in a continuously changing air gap. The method uses separate finite-element meshes to model the individual parts of the device. These meshes are coupled together electromagnetically on an interface using theâ€¦ (More)

- Dave Rodger, H. C. Lai, S.A. Viana, Seamus D. Garvey
- 2006 12th Biennial IEEE Conference onâ€¦
- 2006

The action of many electrical machines is based on magnetic forces in salient structures. Examples are switched reluctance machines, magnetic bearings etc. The force production behaviour of many of these machines can be approximately described using analytic methods, based for example on simple magnetic circuits and the principal of virtual work. Theseâ€¦ (More)

- S.A. Viana, Dave Rodger, H. C. Lai
- 2006 12th Biennial IEEE Conference onâ€¦
- 2006

Radial basis functions are a powerful interpolation technique that has become increasingly popular as a mesh free tool to solve partial differential equations. In this paper, the meshless multiquadric RBF is used and some of the issues related to its accuracy are investigated

- C.C. Yeh, W.J. Tsai, +19 authors Chih-Yuan Lu
- IEEE International Electron Devices Meeting 2003
- 2003

Over erasure, charge gain in the low Vt state, and charge loss in the high Vt state are found to be the most severe reliability issues in a localized trapping storage flash memory cell. In this paper, based on our understanding of physical mechanisms, we demonstrate that by adding vertical electrical field treatments during program/erase operations, theâ€¦ (More)

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