Holographic Flow Visualisation Applied To Very Small Flow Sections In Turbomachinery Research

R. J. Parker; J. B. Brownell

doi:10.1117/12.952361

16 July 1986 Holographic Flow Visualisation Applied To Very Small Flow Sections In Turbomachinery Research

R. J. Parker, J. B. Brownell

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.

Citation Download Citation

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

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available