Slurry flowmetering using correlation techniques

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dc.contributor.advisorRodd, M Gen_ZA
dc.contributor.authorLeitner, Johann Roberten_ZA
dc.date.accessioned2015-03-09T13:58:49Z
dc.date.available2015-03-09T13:58:49Z
dc.date.issued1979en_ZA
dc.descriptionBibliography: leaves 235-256.en_ZA
dc.description.abstractA review of slurry flowmeters leads to the conclusion that most are unsuited for measuring the flowrate of abrasive and corrosive slurries such as are found in the gold mining industry in South Africa. An alternative flowmeter based on cross-correlation techniques is thus proposed. Random signals generated by the flowing fluid are measured at two points a known distance apart in the direction of the flow. Assuming that this distance is not "too" large, the downstream signal is a time-delayed replica of the upstream signal. This delay equals the time it takes flow discontinuities to travel between the two measuring locations and can be obtained by cross-correlating the two flow signals and finding the position of the correlation peak. An analysis to establish a theoretical-basis for the method is performed and an attempt is made to model the flowmeter consisting of the two transducers a known distance apart. A review of transducers for converting time-varying spatial flow patterns into electrical signals is undertaken and leads to ultrasonic transducers being chosen as most suitable for slurry flowrate measurements. Such transducers are non-intrusive and can be of a clamp-on type. The characteristics and requirements of ultrasonic transducers for correlation flowmetering are investigated and a suitable clamp-on design is described.en_ZA
dc.identifier.apacitationLeitner, J. R. (1979). <i>Slurry flowmetering using correlation techniques</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering. Retrieved from http://hdl.handle.net/11427/12588en_ZA
dc.identifier.chicagocitationLeitner, Johann Robert. <i>"Slurry flowmetering using correlation techniques."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 1979. http://hdl.handle.net/11427/12588en_ZA
dc.identifier.citationLeitner, J. 1979. Slurry flowmetering using correlation techniques. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Leitner, Johann Robert AB - A review of slurry flowmeters leads to the conclusion that most are unsuited for measuring the flowrate of abrasive and corrosive slurries such as are found in the gold mining industry in South Africa. An alternative flowmeter based on cross-correlation techniques is thus proposed. Random signals generated by the flowing fluid are measured at two points a known distance apart in the direction of the flow. Assuming that this distance is not "too" large, the downstream signal is a time-delayed replica of the upstream signal. This delay equals the time it takes flow discontinuities to travel between the two measuring locations and can be obtained by cross-correlating the two flow signals and finding the position of the correlation peak. An analysis to establish a theoretical-basis for the method is performed and an attempt is made to model the flowmeter consisting of the two transducers a known distance apart. A review of transducers for converting time-varying spatial flow patterns into electrical signals is undertaken and leads to ultrasonic transducers being chosen as most suitable for slurry flowrate measurements. Such transducers are non-intrusive and can be of a clamp-on type. The characteristics and requirements of ultrasonic transducers for correlation flowmetering are investigated and a suitable clamp-on design is described. DA - 1979 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1979 T1 - Slurry flowmetering using correlation techniques TI - Slurry flowmetering using correlation techniques UR - http://hdl.handle.net/11427/12588 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/12588
dc.identifier.vancouvercitationLeitner JR. Slurry flowmetering using correlation techniques. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 1979 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/12588en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Electrical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherElectrical Engineeringen_ZA
dc.titleSlurry flowmetering using correlation techniquesen_ZA
dc.typeDoctoral Thesis
dc.type.qualificationlevelDoctoral
dc.type.qualificationnamePhDen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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