The Application of Holography as a Transonic Flow Diagnostic to Rotating Components in Turbomachinery,
WARWICK UNIV COVENTRY (ENGLAND)
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This paper reviews the application of holography as a whole field flow visualisation diagnostic in turbomachinery. Starting with two dimensional cascade testing, which required wavelength toleranced optical tables, it has now been found possible to obtain results with bolt-on optical components. In order to achieve this, compromises have been made in optical quality and attention has been given to the nature of the data required. Holographic systems are shown which have been applied to visualise the flow in a linear cascade, an annular cascade, a three dimensional compressor shock in a rotating flow and a diffuser blockage observed in a rotating turbocharger.
- Fluid Mechanics