Publication Date

1990

Document Type

Dissertation/Thesis

First Advisor

Majumdar, Pradip, 1954-

Degree Name

M.S. (Master of Science)

Department

Department of Mechanical Engineering

LCSH

Laser Doppler velocimeter||Fluid dynamic measurements

Abstract

In order to obtain the result of the signal quality in Laser Doppler Anemometry, a water-flow pipe system is designed and installed. The plexiglass pipe is used in the test system. An LDV system is employed in data collection, and Chauvenet’s criterion is used in data analysis. The signal quality in LDV can be represented by signal-to-noise ratio, pedestal height and Doppler shift. The signal quality of polystyrene particles of various sizes is measured in a water-flow pipe facility using a one-component two-beam laser Doppler anemometer with counter processor, frequency shifter and IBM-AT Computer, which measures the axial mean velocity component in the flow system. Results are analyzed for predicting the relationship between particle type, size and signal quality.

Comments

Includes bibliographical references (leaf [93])

Extent

xi, 93 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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