PANS turbulence model: investigation of computational and physical closure issues in flow past a circular cylinder

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dc.contributor.advisor Girimaji , Sharath en_US
dc.contributor.committeeMember Bowersox , Rodney en_US
dc.creator Reyes , Dasia Ann en_US
dc.date.accessioned 2010 -01 -15T00 :06 :15Z
dc.date.accessioned 2014 -02 -19T19 :33 :01Z
dc.date.available 2010 -01 -15T00 :06 :15Z
dc.date.available 2014 -02 -19T19 :33 :01Z
dc.date.created 2008 -08 en_US
dc.date.issued 2009 -05 -15 en_US
dc.identifier.uri http : / /hdl .handle .net /1969 .1 /ETD -TAMU -2855
dc.description.abstract Partially Averaged Navier -Stokes (PANS ) turbulence method provides a closuremodel for any degree of velocity field altering - ranging from completely resolved Di -rect Numerical Simulation (DNS ) to completely averaged Reynolds Averaged Navier -Stokes (RANS ) method . Preliminary investigations of PANS show promising re -sults but there still exist computational and physical issues that must be addressed .This study investigates the performance of the PANS method for ow past acylinder at a Reynolds number of 140 ,000 . The cylinder ow is a benchmark owproblem for which there are signicant experimental results available for validation ofPANS . First , we examine if RANS convergence criteria and discretization schemes -which are meant for robust , nearly steady -state calculations - are adequate for PANS ,which is inherently unsteady and may contain delicate ow features . For the range offk values tested here , it is determined that the standard RANS residual value and the2nd order spatial discretization scheme are appropriate for PANS . The physical clo -sure investigations begin with the validation of turbulent transport models : the ZeroTransport Model , the Maximum Transport Model and the Boundary Layer Trans -port Model . The implementation of the PANS ku -ey!u model is also performed andcompared against the standard PANS ku -ey model . All these studies yield interest -ing insights into the PANS models . This study concludes with an investigation of alow Reynolds number correction for the PANS ku -wu!u model which yields excellent improvement . en_US
dc.format.medium electronic en_US
dc.format.mimetype application /pdf en_US
dc.language.iso en _US en_US
dc.subject Turbulence en_US
dc.title PANS turbulence model : investigation of computational and physical closure issues in flow past a circular cylinder en_US
dc.type Book en
dc.type.genre Electronic Thesis en_US
dc.type.material text en_US
dc.format.digitalOrigin born digital en_US

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PANS turbulence model: investigation of computational and physical closure issues in flow past a circular cylinder. Available electronically from http : / /hdl .handle .net /1969 .1 /ETD -TAMU -2855 .

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