Variational multiscale methods for turbulence control

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dc.contributor.advisorCollis, S. Scott
dc.creatorRamakrishnan, Srinivas
dc.date.accessioned2009-06-04T08:43:15Z
dc.date.available2009-06-04T08:43:15Z
dc.date.issued2003
dc.description.abstractLarge Eddy Simulation (LES) is an efficient computational tool for turbulence simulation. Variational Multiscale (VMS) is a new paradigm for LES that uses variational projection instead of spatial filtering that obviates many issues related to spatial filtering in traditional LES. VMS for a fully-developed turbulent channel flow using a constant coefficient Smagorinsky model is implemented in a hybrid-spectral code. Our implementation differs from prior VMS where we apply scale separation only in the homogeneous directions, i.e. in the planes. The results obtained are comparable to prior VMS implementations that show good agreement with Direct Numerical Simulation (DNS) and are superior to dynamic LES. The ability of the VMS method to simulate turbulence control is studied in the context of opposition control. The results show good agreement with DNS and dynamic LES making VMS an attractive method for turbulence control investigations.
dc.format.extent124 p.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.callnoTHESIS M.E. 2003 RAMAKRISHNAN
dc.identifier.citationRamakrishnan, Srinivas. "Variational multiscale methods for turbulence control." (2003) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/17640">https://hdl.handle.net/1911/17640</a>.
dc.identifier.urihttps://hdl.handle.net/1911/17640
dc.language.isoeng
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.subjectMechanical engineering
dc.titleVariational multiscale methods for turbulence control
dc.typeThesis
dc.type.materialText
thesis.degree.departmentMechanical Engineering
thesis.degree.disciplineEngineering
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science
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