Model Development for Bubble Turbulent Diffusion and Bubble Diameter in Large Vertical Pipes.
نویسندگان
چکیده
منابع مشابه
Bubble breakup in a turbulent shear layer
The breakup of a millimetre size buoyantly rising bubble encountering a horizontal plane turbulent jet is experimentally investigated using high-speed shadowgraphy and acoustic techniques. The bubble diameter to jet height ratio is 0.75 and the jet height based Reynolds number is 4000. The high-speed imaging was recorded at 7 kHz simultaneous with hydrophone output at 100 kHz. Bubble breakup ev...
متن کاملCfd-based Modelling of Bubble-particle Collision Efficiency with Mobile Bubble Surface in a Turbulent Environment
Flotation modelling to date appears to have concentrated either on macroscale processes or on ideal microscale processes – there has been no attempt to integrate detailed models at different scales. In this paper, bubble-particle collision efficiency with mobile bubble surfaces in a turbulent flow is investigated from a multiscale modelling viewpoint and a general methodology for modelling of t...
متن کاملInteractional effects of bubble size, particle size, and collector dosage on bubble loading in column flotation
The success of flotation operation depends upon the thriving interactions of chemical and physical variables. In this work, the effects of particle size, bubble size, and collector dosage on the bubble loading in a continuous flotation column were investigated. In other words, this work was mainly concerned with the evaluation of the true flotation response to the changes in the operating varia...
متن کاملReduced gradient bubble model.
An approach to decompression modeling, the reduced gradient bubble model (RGBM), is developed from the critical phase hypothesis. The phase limit is introduced, extended, and applied within bubble-nucleation theory proposed by Yount. Much is different in the RGBM algorithm, on both theoretical and applied sides, with a focus on permissible bubble excesses rather than just dissolved gas buildup,...
متن کاملVapour-bubble nucleation and dynamics in turbulent Rayleigh–Bénard convection
Daniela Narezo Guzman1,2,†, Tomasz Frączek2, Christopher Reetz2, Chao Sun1,3, Detlef Lohse1,4 and Guenter Ahlers2 1Physics of Fluids Group, Department of Science and Technology, J.M. Burgers Center for Fluid Dynamics, and Impact-Institute, University of Twente, 7500 AE Enschede, The Netherlands 2Department of Physics, University of California, Santa Barbara, CA 93106, USA 3Center for Combustion...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Nuclear Science and Technology
سال: 2001
ISSN: 0022-3131
DOI: 10.3327/jnst.38.1074