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Study of diffusion from a line source in a turbulent boundary layer: preliminary, subject to revision

dc.contributor.authorPoreh, Michael, author
dc.contributor.authorCermak, J. E. (Jack E.), author
dc.contributor.authorColorado State University, publisher
dc.date.accessioned2019-09-17T18:45:29Z
dc.date.available2019-09-17T18:45:29Z
dc.date.issued1962-10
dc.descriptionCER62JEC-MP63.
dc.descriptionOctober 1962.
dc.descriptionIncludes bibliographical references.
dc.description.abstractDiffusion of a scalar quantity (ammonia gas) from a steady line source within a two-dimensional turbulent boundary layer is studied. Using a long 6 x 6 ft square test section, the boundary-layer thickness varied from 5 to 11 in. for distances of 3 to 43.5 ft downstream with air speeds from 9 to 16 ft/sec. Measurements of mean ammonia concentrations in air are reported, analyzed and compared with a few measurements of heat transfer in similar conditions. Formulation of the results takes into consideration the transverse non homogeneity of the velocity field and also divides the downstream diffusion field into four zones. Measurements of the mean velocity field and the mean concentration field permit the flux of mass in the vertical direction to be calculated through the equation of mass conservation. The use of an eddy diffusivity coefficient to describe the processes of turbulent diffusion is discussed and it is shown that for a long distance downstream of the source, such a coefficient cannot be related to the local Eulerian variables of the boundary-layer flow.
dc.format.mediumtechnical reports
dc.identifier.urihttps://hdl.handle.net/10217/197979
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relationCatalog record number (MMS ID): 991013026189703361
dc.relation.ispartofCivil Engineering Reports
dc.relation.ispartofCER, 62-63
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subject.lcshTurbulent boundary layer
dc.subject.lcshTurbulence
dc.subject.lcshFluid dynamics
dc.titleStudy of diffusion from a line source in a turbulent boundary layer: preliminary, subject to revision
dc.title.alternativeStudy of diffusion from a line source in a turbulent boundary layer
dc.typeText
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