Intermittency and Length Scale Distributions in Plane Turbulent Plumes
MetadataShow full item record
Previous studies have shown that normalized Reynolds shear stress and turbulent heat fluxes in asymptotic plane turbulent plumes are significantly higher than in asymptotic plane turbulent jets. This paper describes an attempt to relate this increase to the length scales in the flow. Hot/cold interface intermittency and integral-length-scale distributions were measured in both these flows. The interface-intermittency distributions were found to be bell-shaped in the plume in contrast to a nearly top-hat shape in a jet, thus providing confirmation of the role of buoyancy in generating larger scales in plumes. These larger scales cause the integral length of turbulence in the plume to increase by nearly 15 percent relative to the non-buoyant jet.
Trans. ASME Journal of Fluids Engineering, Vol. 112, No. 3, pp. 367-369, Sep. 1990.
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Showing items related by title, author, creator and subject.
Study of transition phenomena in a straight channel with 40 to 1 aspect ration with and without imposed pulsations Part two: Reynolds number surveys Smith, Bradley Joseph (Monterey, California. Naval Postgraduate School, 1991-03);A channel with rectangular cross-section, 40 to 1 aspect ratio (height is0.0127 m) and 4.27 m test section length (336 channel lengths) is used to study the effects of imposed pulsations on laminar, transitional, and ...
Change of Multifractal Thermal Characteristics in the Western Philippine Sea Upper Layer during Internal Wave-Soliton Propagation Chu, Peter C.; Hsieh, Chung-Ping (2007);The upper layer (above 140 m depth) temperature in the western Philippine Sea near Taiwan was sampled using a coastal monitoring buoy (CMB) with 15 attached thermistors during July 28–August 7, 2005. The data were collected ...
Willis, Ryan M.; Pollman, Anthony G.; Gannon, Anthony J.; Hernandez, Alejando (IEEE, 2019);Liquid Air Energy Storage (LAES) is a potential solution to mitigate renewable energy intermittency on islanded microgrids. Renewable microgrid generation in excess of the immediate load runs a cryogenic cycle to create ...