Paper
16 July 1986 Holographic Flow Visualisation Applied To Very Small Flow Sections In Turbomachinery Research
R. J. Parker, J. B. Brownell
Author Affiliations +
Proceedings Volume 0599, Optics in Engineering Measurement; (1986) https://doi.org/10.1117/12.952361
Event: 1985 International Technical Symposium/Europe, 1985, Cannes, France
Abstract
Holographic flow visualisation has been successfully employed by Rolls-Royce to investigate three dimensional flows in rotating aero-engine fans and two dimensional flows in cascades of blades in wind tunnels. In a development of the latter technique, flow fields in life-size models of labyrinth seals have been investigated. These tiny components are used to block gas flow between rotating and stationary parts of the engine without physical contact. The models are typically 20mm across with gaps of less than 0.5mm. Careful design of the optical system and the use of broad-band reconstruction techniques minimise the deleterious effects of diffraction and laser speckle. High resolution interferograms of the complicated flow field can be achieved. The paper discusses the optical system and presents examples of the holographic reconstructions.
© (1986) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. J. Parker and J. B. Brownell "Holographic Flow Visualisation Applied To Very Small Flow Sections In Turbomachinery Research", Proc. SPIE 0599, Optics in Engineering Measurement, (16 July 1986); https://doi.org/10.1117/12.952361
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KEYWORDS
Holograms

Holography

Diffraction

Visualization

3D image reconstruction

Fringe analysis

Optical design

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