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dc.contributor.advisor Bayazitoglu, Yildiz
dc.contributor.advisor Meade, Andrew J., Jr.
dc.creatorThomson, David Lee
dc.date.accessioned 2009-06-04T00:10:22Z
dc.date.available 2009-06-04T00:10:22Z
dc.date.issued 1996
dc.identifier.urihttps://hdl.handle.net/1911/14090
dc.description.abstract The flow in a helical duct is characterized by increased fluid mixing, accomplished by the inducement of a secondary flow in the plane normal to the helix centerline. Two independent phenomena interact to produce this secondary flow. First, the curvature of the duct (i.e. its torroidal nature) causes Dean's type recirculation. Second, the torsion due to the non-planarity of the helix causes additional mixing. The secondary flow alters the axial velocity profile and increases the pressure drop compared to a straight duct. Imposing a rectangular cross section on such a duct complicates the analysis compared to a circular or elliptical cross section. A series solution based on curvature is introduced. The components of the series are determined using appropriate eigenfunction expansions. However, the resulting low order solution is limited to low Dean number flows. The analytical solution is useful for flows where curvature (torroidal ducts) or curvature and torsion (helical ducts) are important.
dc.format.extent 92 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectMechanical engineering
dc.title Low Dean number flows in helical ducts of rectangular cross section
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Mechanical Engineering
thesis.degree.discipline Engineering
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Science
dc.identifier.citation Thomson, David Lee. "Low Dean number flows in helical ducts of rectangular cross section." (1996) Master’s Thesis, Rice University. https://hdl.handle.net/1911/14090.


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