Optodynamic measurement of a non-stationary temperature field in air by multiple laser-beam deflection
Bračun, Drago (Author), Diaci, Janez (Author), Možina, Janez (Author)

URLURL - Presentation file, Visit http://stacks.iop.org./MST/12/2009 New window

A new method for non-stationary temperature-field measurement is presented. Optoacoustic generation is used to emit short acoustic transients within the observed field. The transient deflects a probe laser beam, which is folded by two parallel mirrors in such a way that it passes through the observed field several times before it reaches a position-sensitive photo-detector. The timing of the acoustic wavefront transints at several distances from the source is obtained from a single oscilloscope trace of the photo-detector output. By measuring the acoustic wavefront transit times and the distances between the probe-beam segments, the velocity of sound is determined and from this we were able to calculate the local temperature.

Keywords:gas temperature field, local sound velocity, optodynamic method, multiple laser-beam deflection
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Number of pages:str. 2009-2014
Numbering:Vol. 12, no. 11
ISSN on article:0957-0233
COBISS.SI-ID:4562203 Link is opened in a new window
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Record is a part of a journal

Title:Measurement science & technology
Shortened title:Meas. sci. technol.
Publisher:IOP Publishing
COBISS.SI-ID:6000901 New window

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