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Please use this identifier to cite or link to this item: http://hdl.handle.net/11375/25166
Title: Particle Image Velocimetry Applied to Mixed Convection in a Rectangular Enclosure
Authors: Barrick, Karen
Advisor: Shoukri, M.
Wood, P.
Department: Mechanical Engineering
Keywords: particle image velocimetry;mixed convection;rectangular enclosure
Publication Date: Feb-1995
Abstract: An investigation of mixed convection in a rectangular enclosure is presented in which the velocity fields in the enclosure are determined using Particle Image Velocimetry (PIV). Basically, this technique records optical images of flow tracers within a flow field, and determines the velocity field by measuring the displacement of the flow tracers during short time intervals. The components which comprise the PIV system and its operation are described in detail to familiarize the reader with this relatively new technique. The main objective of this investigation is to determine the accuracy and applicability of the PIV technique as a velocity measurement tool. This is accomplished by comparing present experimental velocity results to those obtained by Nurnberg [2] using Laser Doppler Anemometry (LDA). LDA has been proven to be an accurate velocity measurement tool and provides data for evaluating PIV results. A second objective of this research is to use the PIV results to verify a numerical code written by Nurnberg [2] which predicts the velocity fields in the rectangular enclosure. However, the comparison of experimental results of the two measurement techniques revealed that the PIV results were too inaccurate to perform this function. The large amount of error present in this PIV system prompted the recommendation of an improved, more accurate system. Although this improved system is very expensive - approximately $40,000 - it will provide velocity measurements with an accuracy close to that of LDA, at half the cost of an LDA system and with far less time for data acquisition and analysis.
URI: http://hdl.handle.net/11375/25166
Appears in Collections:Digitized Open Access Dissertations and Theses

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