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On diffusion from an instantaneous point source in a neutrally stratified turbulent boundary layer with a laser light scattering probe

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dc.contributor.authorYang, B. T., author
dc.contributor.authorMeroney, Robert N., author
dc.contributor.authorFluid Dynamics and Diffusion Laboratory, College of Engineering, Colorado State University, publisher
dc.date.accessioned2020-04-17T16:47:39Z
dc.date.available2020-04-17T16:47:39Z
dc.date.issued1972-10
dc.descriptionCER72-73BTY-RNM-17.
dc.descriptionOctober 1972.
dc.descriptionIncludes bibliographical references (pages 105-111).
dc.descriptionPrepared under Office of Naval Research Contract No. N00014-68-A-0493-0001, Project No. NR 062-414/6-6-68 (Code 438), U.S. Department of Defense, Washington, D.C.
dc.descriptionCirculating copy deaccessioned 2020.
dc.description.abstractThe behavior of an instantaneous point source, as it disperses in a thick, neutrally stratified, turbulent shear layer, has been examined by a laser light-scattering technique in the Meteorological Wind Tunnel. An aerosol-filled gas bubble was released in a column of water to subsequently rise and burst at the floor of the wind tunnel. This "pseudo-instantaneous" gas volume dispersed in the turbulent shear layer. Time dependent concentrations at a point were monitored by measuring the scattered light from a coherent light source by a photomultiplier-fiber optics probe. Data consisted of a series of concentration realizations downstream from the ground level source. The distribution of concentration was described by selecting coefficients empirically in a Gram-Charlier series. Puff dispersion characteristics were compared with prediction of the Lagrangian similarity diffusion theory. Wind tunnel results were also compared with field dispersion studies conducted by Pacific Northwestern Laboratory at Hanford Reservation, Washington.
dc.description.sponsorshipPartial financial support of this work provided by ONR Contract No. N00014-68-A-0493-0001, NSF Grant No. GK 23989, and EPA Contract No. IROl-AP0-1186-02.
dc.format.mediumtechnical reports
dc.identifier.urihttps://hdl.handle.net/10217/204893
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relationCatalog record number (MMS ID): 991012235659703361
dc.relationTA .C7 CER 72/73-17
dc.relation.ispartofCivil Engineering Reports
dc.relation.ispartofCER, 72/73-17
dc.relation.ispartofProject THEMIS technical report, no. 20
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 diffusion (Meteorology)
dc.subject.lcshDiffusion
dc.titleOn diffusion from an instantaneous point source in a neutrally stratified turbulent boundary layer with a laser light scattering probe
dc.typeText
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