| EPSRC Reference: |
GR/J06245/01 |
| Title: |
MODELLING OF SHORT WAVE PROBLEMS USING FINITE ELEMENT TECHNIQUES |
| Principal Investigator: |
Bettess, Professor P |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Marine Science and Technology |
| Organisation: |
Newcastle University |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 November 1993 |
Ends: |
30 June 1995 |
Value (£): |
60,952
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| EPSRC Research Topic Classifications: |
| RF & Microwave Technology |
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Summary on Grant Application Form |
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To develop a finite element method which will model all wave problems governed by the Helmholtz equation including problems of radar cross-section and acoustics for which the mesh size would be independent of the wavelength. Progress:The research has been very successful: two papers have already been written, one is to be published in Communications in Numerical Methods in Engineering later this year and the other shall be sent to the publishers in order to be refereed shortly.In essence the method models the wave envelope A and phase p which vary much more gradually than the oscillatory potential =Aeip of the progressive wave which is usually modelled; hence the mesh size is independent of the wavelength and a much coarser mesh can be used. The method is entirely new and involves iterations on an initial estimate for the phase.So far the wave successfully modelled the plane wave potential, Hankel source potential and near field diffraction potential from a vertical cylinder with a nodal spacing in some cases 100 times larger than normally used. For future work we will model the whole domain for the diffraction potential from a vertical cylinder by using infinite elements.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.ncl.ac.uk |