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dc.contributor.advisorLigrani, Phillip M.
dc.contributor.authorSkogerboe, Paul E.
dc.dateMarch 1990
dc.descriptionApproved for public release; distribution is unlimited.en_US
dc.description.abstractThe effects of curvature and the resulting centrifugal instabilities on local heat transfer distributions are studied in a curved channel at Dean numbers ranging from 50 to 200. The channel has a rectangular cross section of 1.27 cm by 50.1 cm giving an aspect ratio of 40 to 1. Flow is heated in a straight portion of the channel prior to the curved portion in order to obtain flow which is hydrodynamically and thermally fully developed. All baseline tests confirm techniques employed and qualify flow behavior. These consist of energy balance checks and comparison of results from the straight section to numerical and analytic solutions. Nusselt numbers in the curved section initially show an abrupt decrease after the imposition of the stabilizing influences of convex curvature. These are followed by a gradual increase as centrifugal instabilities and Dean vortices form and develop. Spatially resolved results also show significant surface Nusselt number variations across the span of a vortex pair, especially on the concave surface. On the convex surface, local Nusselt numbers are much more apt to be spanwise uniform.en_US
dc.format.extentix, 120 p. ill.en_US
dc.publisherMonterey, California: Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted.en_US
dc.titleLocally and spacially averaged heat transfer distributions in a curved channel with 40 to 1 aspect ratio for Dean numbers from 50 to 200en_US
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.contributor.departmentDepartment of Mechanical Engineering
dc.subject.authorCurved Heating Channelen_US
dc.subject.authorHeat Transfer Coefficientsen_US
dc.subject.authorNusselt Numbersen_US
dc.subject.authorDean Vorticesen_US
dc.subject.authorCentrifugal Instabilitiesen_US
dc.description.serviceLieutenant, United States Navyen_US
etd.thesisdegree.nameM.S. in Mechanical Engineeringen_US
etd.thesisdegree.disciplineMechanical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US

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