Year

1995

Degree Name

Master of Engineering (Hons.)

Department

Department of Mechanical Engineering

Abstract

This aim of this thesis is to design and develop an anemometer for measuring the velocity field in hydro-dynamic bearings. Hydro-dynamic bearings use an oil film to provide a low friction flow between two surfaces of different speeds. The oil film thickness is of the order of 50|im to 100|im which makes the measurement of the flow difficult. Although there are many different types of anemometers, a laser Doppler velocimeter (LDV) was selected based on the following reasons: they operate non-intrusively so that there is no disturbance to the flow being measured; the spatial resolution of LDVs can be reduced to dimensions less than 10|im by suitable optics.

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