Estimation Of Shock Stand-Off Distance Using The Curved Shock Theory And Its Validation Via Numerical Modelling

dc.contributor.authorZelalem, Arega Worku
dc.contributor.authorTimofeev, Evgeny
dc.contributor.authorMolder, Sannu
dc.date.accessioned2018-11-07T20:39:11Z
dc.date.available2018-11-07T20:39:11Z
dc.date.issuedMay-18
dc.description.abstractCurved shocks that are locally oriented normal to the direction of the pre-shock flow vector appear on bluff and blunt bodies in supersonic flow and at the center lines of axisymmetric air intakes. There have been numerous studies to analytically approximate the shock stand-off distance associated with these curved normal shock waves; however, in view of the absence of satisfactory results across the entire range of freestream Mach numbers, further efforts are warranted. In this study, the Curved Shock Theory (CST) is used to derive analytical expressions for the pressure gradient right behind convex normal shocks in uniform upstream flow. This pressure gradient can be converted to gradients of other variables using the conservations laws and the isentropic relations. Using these gradients at the curved normal shock and an additional assumption on their variation between the shock and the blunt body it is possible to develop relations for the ratio of the shock stand-off distance to the radius of curvature of the shock surface as a function of freestream Mach number and the specific heat ratio. CST predictions are compared with experimental data from the literature and the CFD results obtained in the present study for freestream Mach numbers ranging from 1.2 to 8.en_US
dc.identifierCSME208
dc.identifier.isbn978-1-77355-023-7
dc.identifier.urihttp://hdl.handle.net/10315/35318
dc.identifier.urihttp://dx.doi.org/10.25071/10315/35318
dc.language.isoenen_US
dc.publisherCSME-SCGMen_US
dc.rightsThe copyright for the paper content remains with the author.
dc.subjectFluid Mechanicsen_US
dc.subjectShock stand-off distanceen_US
dc.subjectCurved shock theoryen_US
dc.subjectBlunt bodyen_US
dc.subjectRadius of shock curvatureen_US
dc.titleEstimation Of Shock Stand-Off Distance Using The Curved Shock Theory And Its Validation Via Numerical Modellingen_US
dc.typeArticleen_US

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