A Numerical Investigation of the Critical Point for Recirculation in Axisymmetric Confined Jets

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dc.contributor.advisorJohansen, Craig
dc.contributor.advisorZiade, Paul
dc.contributor.authorDoerksen, Graham
dc.contributor.committeememberWood, David
dc.contributor.committeememberBenneker, Anne
dc.date2021-11
dc.date.accessioned2021-05-21T20:37:46Z
dc.date.available2021-05-21T20:37:46Z
dc.date.issued2021-05-14
dc.description.abstractThe Craya-Curtet number is a similarity parameter used to characterize confined jets. Below the critical Craya-Curtet number, a recirculation zone will exist inside the confined jet. A literature review of confined jets reveals conflicting equations are being used to calculate this number and report experimental results. The different equations are tabulated, assessed and Guiraud's 1991 definition of the Craya-Curtet number is chosen based on appropriate limit behaviour for all diameter ratios and volumetric flow ratios. A numerical validation study for a confined jet is completed using the Large Eddy Simulation (LES) Wall-Adapting Local Eddy-Viscosity (WALE) model and the Reynolds-Averaged Navier-Stokes (RANS) k-ω Shear Stress Transport (SST) model. The RANS k-ω SST model is shown to be sufficient for parametric analysis. To extend on previous studies, numerical simulations are performed to characterize the relationship between the Craya-Curtet number, diameter ratio, and jet Reynolds number. The RANS k-ω SST model predicts a linear relationship between the critical volumetric flow ratio and the diameter ratio. This linear relationship is mapped into the Craya-Curtet number space and the predicted critical Craya-Curtet number increases and approaches a constant as the diameter ratio increases. Conversely, the critical Craya-Curtet number strongly decreases as the diameter ratio approaches one.en_US
dc.identifier.citationDoerksen, G. (2021). A Numerical Investigation of the Critical Point for Recirculation in Axisymmetric Confined Jets (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/38891
dc.identifier.urihttp://hdl.handle.net/1880/113444
dc.language.isoengen_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.subjectConfined Jeten_US
dc.subjectCraya-Curteten_US
dc.subjectRecirculationen_US
dc.subjectComputational Fluid Dynamicsen_US
dc.subject.classificationEngineering--Chemicalen_US
dc.subject.classificationEngineering--Mechanicalen_US
dc.titleA Numerical Investigation of the Critical Point for Recirculation in Axisymmetric Confined Jetsen_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.requestcopytrueen_US
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