Laminar Near Wake of Hypersonic Blunt Bodies

Simple item page
atmire.migration.oldid5965
dc.contributor.advisorJohansen, Craig
dc.contributor.authorHinman, William Schuyler
dc.contributor.committeememberMartinuzzi, Robert
dc.contributor.committeememberWood, David
dc.contributor.committeememberCully, Christopher
dc.contributor.committeememberChue, Randy
dc.date.accessioned2017-09-11T20:21:08Z
dc.date.available2017-09-11T20:21:08Z
dc.date.issued2017
dc.date.submitted2017en
dc.description.abstractA detailed analysis of the mechanisms of the hypersonic laminar near-wake is presented. Simulations of the compressible Navier-Stokes equations in two dimensions for various geometries (a cylinder, sphere, and a truncated aft-body cylinder) at a range of Mach (6<M<10) and Reynolds (8x10^3<Re<10^5) numbers have been simulated. Using the simulation results for supporting discussion and analysis, a new theoretical framework for the hypersonic laminar near-wake was developed and is presented here. A semi-empirical relation is derived which can be used to estimate the local characteristic Reynolds number of the wake. Semi-empirical relations are developed and presented for pressure minimum location, separation location, separation length, and viscous-inviscid interaction parameters. The dependence of these parameters on free-stream properties such as Mach and Reynolds number are highlighted. Viscous-inviscid interaction theories are derived and presented for the lip and reattachment shock wave formation processes. As well, a theory is presented that allows the rear stagnation point pressure distribution to estimate the wake centerline Mach number and the effective diameter of the reversed flow jet. The developed sub-mechanisms are then combined into a new overall theoretical framework for the laminar near-wake. Using scaling arguments, the role of each sub mechanism as flow conditions change is discussed. Using the presented theoretical framework and empirical relations, a detailed review and disambiguation of results found in the literature is presented.en_US
dc.identifier.citationHinman, W. S. (2017). Laminar Near Wake of Hypersonic Blunt Bodies (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/26716en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/26716
dc.identifier.urihttp://hdl.handle.net/11023/4094
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
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.
dc.subjectEngineering--Aerospace
dc.subjectEngineering--Mechanical
dc.subject.otherLaminar near wake
dc.subject.otherHypersonic flow
dc.subject.otherHypersonic aerodynamics
dc.titleLaminar Near Wake of Hypersonic Blunt Bodies
dc.typedoctoral thesis
thesis.degree.disciplineMechanical and Manufacturing Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
ucalgary.item.requestcopytrue
Files
Collections
Open Theses and Dissertations