Effect of Surface Treatment on the Rate of Convective Heat Transfer for a Cylinder in Crossflow

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dc.contributor.advisorJohansen, Craig
dc.contributor.advisorPark, Simon
dc.contributor.authorElliott, Mark
dc.contributor.committeememberGates, Ian
dc.contributor.committeememberHugo, Ron
dc.contributor.committeememberMohamad, Abdulmajeed
dc.date2018-02-16
dc.date.accessioned2018-01-19T00:54:44Z
dc.date.available2018-01-19T00:54:44Z
dc.date.issued2018-01-08
dc.description.abstractA method of roughening the surface of cylinders by media-blasting with micron scale particles was tested for heat transfer enhancement and pressure drop characteristics with an air flow over a range of Reynolds numbers from 200 to 7000. It was found that the surface treatment had an adverse effect on the rate of convective heat transfer over a range of Reynolds numbers. However, over the same range, the surface pressure drop was unaffected by the surface treatment. The pressure data likely indicates that the stream turbulence of the oncoming air flow was high enough to cause the critical Reynolds number to drop to the lower end of the Reynolds number range and nullify any positive effects that a roughened surface might have. Lower Nusselt numbers for the blasted wires suggest that for flows with high free-stream turbulence intensity a roughened surface decreases heat transfer. This decrease is possibly caused by earlier turbulent boundary layer separation on the rough surface due to the fact that the flows are all in the trans-critical flow regime at every Reynolds number tested.en_US
dc.identifier.citationElliot, M. (2018). Effect of Surface Treatment on the Rate of Convective Heat Transfer for a Cylinder in Crossflow (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/5361
dc.identifier.urihttp://hdl.handle.net/1880/106280
dc.language.isoenen_US
dc.publisher.facultySchulich School of Engineeringen_US
dc.publisher.institutionUniversity of Calgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.en_US
dc.subjectHeat Transferen_US
dc.subjectFluid Mechanicsen_US
dc.subjectHeat Exchangeren_US
dc.subject.classificationEngineering--Aerospaceen_US
dc.subject.classificationEngineering--Mechanicalen_US
dc.titleEffect of Surface Treatment on the Rate of Convective Heat Transfer for a Cylinder in Crossflowen_US
dc.typemaster thesisen_US
thesis.degree.disciplineEngineering – Mechanical & Manufacturingen_US
thesis.degree.grantorUniversity of Calgaryen_US
thesis.degree.nameMaster of Science (MSc)en_US
ucalgary.item.requestcopytrue
ucalgary.thesis.checklistI confirm that I have submitted all of the required forms to Faculty of Graduate Studies.en_US
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