The University of Southampton
University of Southampton Institutional Repository

The effect of acoustic noise on optical fibre based laser Doppler velocimetry systems

The effect of acoustic noise on optical fibre based laser Doppler velocimetry systems
The effect of acoustic noise on optical fibre based laser Doppler velocimetry systems
The potentially serious problem of acoustic noise pick-up in fibre-based LDV systems is addressed both theoretically and experimentally. A new broadening mechanism, called phase noise broadening, is discussed and the magnitude of this effect is estimated for typical LDV systems. This broadening leads to an overestimate of the turbulence index which is more serious for low speed flows. In a representative situation the magnitude of the error in the turbulence index is of the order of 5%.
Pannell, C.N.
002fadf4-f97e-4732-b171-73ed7563ee18
Jones, J.D.C.
c757c6f0-7f06-44a7-8130-7865ed565b6b
Jackson, D.A.
96d434a6-8a01-4702-ab8f-3174bf6f348e
Pannell, C.N.
002fadf4-f97e-4732-b171-73ed7563ee18
Jones, J.D.C.
c757c6f0-7f06-44a7-8130-7865ed565b6b
Jackson, D.A.
96d434a6-8a01-4702-ab8f-3174bf6f348e

Pannell, C.N., Jones, J.D.C. and Jackson, D.A. (1992) The effect of acoustic noise on optical fibre based laser Doppler velocimetry systems. 6th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisboa, Portugal. 20 - 23 Jul 1992.

Record type: Conference or Workshop Item (Paper)

Abstract

The potentially serious problem of acoustic noise pick-up in fibre-based LDV systems is addressed both theoretically and experimentally. A new broadening mechanism, called phase noise broadening, is discussed and the magnitude of this effect is estimated for typical LDV systems. This broadening leads to an overestimate of the turbulence index which is more serious for low speed flows. In a representative situation the magnitude of the error in the turbulence index is of the order of 5%.

Text
607
Download (393kB)

More information

Published date: 1992
Venue - Dates: 6th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisboa, Portugal, 1992-07-20 - 1992-07-23

Identifiers

Local EPrints ID: 77346
URI: http://eprints.soton.ac.uk/id/eprint/77346
PURE UUID: a2f04d99-1c19-4556-bcb9-106057361d00

Catalogue record

Date deposited: 11 Mar 2010
Last modified: 13 Mar 2024 23:50

Export record

Contributors

Author: C.N. Pannell
Author: J.D.C. Jones
Author: D.A. Jackson

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×