Characterization of a Transitional Hypersonic Boundary Layer - Tirtey, Sandy
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Roughness induced boundary layer transition has been one of the main research topics for the hypersonic community over the last half- century. The major interest into the understanding of this phenomenon relies in the key role played by transition prediction methods on hypersonic vehicles thermal protection system (TPS) design. Several boundary layer transition predictions methods have been developed but a review of these transition criteria reveals a lack a physics associated with these engineering methods together with a lack of reliable flight data. The work presented in this thesis is a…mehr

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Produktbeschreibung
Roughness induced boundary layer transition has been one of the main research topics for the hypersonic community over the last half- century. The major interest into the understanding of this phenomenon relies in the key role played by transition prediction methods on hypersonic vehicles thermal protection system (TPS) design. Several boundary layer transition predictions methods have been developed but a review of these transition criteria reveals a lack a physics associated with these engineering methods together with a lack of reliable flight data. The work presented in this thesis is a first step trying to fill this gap. First, the physical mechanisms associated with hypersonic roughness induced transition are investigated both experimentally and numerically. Secondly, an hypersonic roughness induced transition experiment has been developed for the EXPERT mission, aiming to obtain high quality flight data.
Autorenporträt
Dr Sandy Tirtey has been involved in several hypersonic re-entry flight projects: EXPERT, CubeSat, HIFiRE and more recently, the SCRAMSPACE project as the technical lead of the SCRAMSPACE I hypersonic flight experiment. His fields of expertise are: hypersonic flight testing, roughness induced transition, scramjets and thermo-structural analyses.