Hybrid modelling for echo location and surface characterisation

D. de Cogan; M. Morton; D. Peel; V. Sant

doi:10.1002/jnm.403

Hybrid modelling for echo location and surface characterisation

D. de Cogan, M. Morton, D. Peel, V. Sant

School of Computing Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

The scattering of sound from surfaces by rotating sources such as the tips of helicopter rotor blades can be used as a method of locating and ranging obstructions which may represent a physical danger to the craft. Modelling such systems presents some difficulties but these can be overcome using a combination of TLM and phase-coherent ray-tracing. This paper describes the hybrid approach, particularly, the techniques for interfacing. The application to the specific problem of the scattering of rotor-tip noise from realistic targets involved the use of a simple PML and surface-conforming boundaries.

Original language	English
Pages (from-to)	145-154
Number of pages	10
Journal	International Journal of Numerical Modelling: Electronic Networks, Devices and Fields
Volume	14
Issue number	2
DOIs	https://doi.org/10.1002/jnm.403
Publication status	Published - 2001

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10.1002/jnm.403

Cite this

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title = "Hybrid modelling for echo location and surface characterisation",

abstract = "The scattering of sound from surfaces by rotating sources such as the tips of helicopter rotor blades can be used as a method of locating and ranging obstructions which may represent a physical danger to the craft. Modelling such systems presents some difficulties but these can be overcome using a combination of TLM and phase-coherent ray-tracing. This paper describes the hybrid approach, particularly, the techniques for interfacing. The application to the specific problem of the scattering of rotor-tip noise from realistic targets involved the use of a simple PML and surface-conforming boundaries.",

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AU - Morton, M.

AU - Peel, D.

AU - Sant, V.

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N2 - The scattering of sound from surfaces by rotating sources such as the tips of helicopter rotor blades can be used as a method of locating and ranging obstructions which may represent a physical danger to the craft. Modelling such systems presents some difficulties but these can be overcome using a combination of TLM and phase-coherent ray-tracing. This paper describes the hybrid approach, particularly, the techniques for interfacing. The application to the specific problem of the scattering of rotor-tip noise from realistic targets involved the use of a simple PML and surface-conforming boundaries.

AB - The scattering of sound from surfaces by rotating sources such as the tips of helicopter rotor blades can be used as a method of locating and ranging obstructions which may represent a physical danger to the craft. Modelling such systems presents some difficulties but these can be overcome using a combination of TLM and phase-coherent ray-tracing. This paper describes the hybrid approach, particularly, the techniques for interfacing. The application to the specific problem of the scattering of rotor-tip noise from realistic targets involved the use of a simple PML and surface-conforming boundaries.

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DO - 10.1002/jnm.403

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VL - 14

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JO - International Journal of Numerical Modelling: Electronic Networks, Devices and Fields

JF - International Journal of Numerical Modelling: Electronic Networks, Devices and Fields

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