Results 221 to 230 of about 69,320 (268)
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Vorticity distribution in barotropic recirculating bubbles
2nd AIAA, Theoretical Fluid Mechanics Meeting, 1998Twodimensional high Reynolds number flows inside steady recirculating bubbles are studied by means of an asymptotic analysis as Re -> oo. The classical results about the asymptotic vorticity distribution of an incompressible recirculating flow with constant viscosity proved by Batchelor are re-examined in the framework of the new approach.
PACIORRI, Renato +2 more
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Bubble‐Size distributions and flow fields in bubble columns
AIChE Journal, 2002AbstractBubble‐size distributions and flow fields in bubble columns are calculated numerically. The population balance is simplified and reduced to a balance equation for the average bubble volume. Models developed predict the rate of bubble breakup and coalescence based on physical principles.
F. Lehr, M. Millies, D. Mewes
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Bubble size distribution in the sparger region of bubble columns
Chemical Engineering Science, 2002Abstract It is well known that the gas distributor can play an important role on the evolution of the bubble size distribution (BSD) in gas–liquid reactors, strippers and absorbers. Therefore, the main subject of the present work was to study the influence of sparger design and process parameters on the BSD in the sparger region of the considered ...
POLLI M. +4 more
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Bubble Size Distribution in Oil‐Based Bubble Columns
Chemical Engineering & Technology, 2008AbstractA practical population balance model was used to evaluate the bubble size distribution in a bubble column. In addition, the bubble size distribution in the bubble column was measured at different gas velocities by photography and analysis of the pictures.
S.‐S. Homayouni +4 more
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Bubble size and bubble velocity distribution in bubble columns under industrial conditions
The Canadian Journal of Chemical Engineering, 2017Bubble column reactors are widely used in many industrial applications due to their simplicity and safety of operation. Despite these advantages, the design and scale‐up of bubble column reactors is still challenging especially for industrial conditions at elevated pressure and temperature.
Bothe, Melanie +7 more
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MATTER DISTRIBUTION IN A FALSE VACUUM BUBBLE
Modern Physics Letters A, 1992The dynamics of matter distribution that may contaminate a false vacuum bubble is considered. In the case of uniform dust distribution, it is shown that the distribution eventually collapses (expands) if the matter energy density is greater (smaller) than twice the false vacuum energy density.
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Variational theory of bubbly media with a distribution of bubble size—I. Liquids
International Journal of Engineering Science, 1992zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hawkins, J. A., Bedford, A.
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Influence of bubble distributions on the propagation of linear waves in polydisperse bubbly liquids
The Journal of the Acoustical Society of America, 2019The influence of the spatial distributions of bubbles on the propagation of linear acoustic waves in polydisperse bubbly liquids is studied. Using the diagrammatic approach, the effective wavenumber, which includes both spatial information and higher orders of multiple scattering, is presented.
Yuzhe, Fan +3 more
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Estimation of bubble size and distribution and the effects of bubbles on high-frequency transmission
2008 IEEE International Conference on Multisensor Fusion and Integration for Intelligent Systems, 2008Measurements of bubble size and distribution in the ocean bubble layer, wind speed, and variation of ocean environment were made continually over a four-day period in an experiment conducted in the South Sea of Korea during 17-20 September 2007. Theoretical background of bubble population model and bubble effects on sound speed indicate that bubble ...
Guoqing Zhou 0002, Taebo Shim
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Chemical Engineering Science, 1998
Abstract The probability relationships between bubble sizes and chord lengths in an heterogeneously bubbling system have been analyzed. A forward transform of chord length distribution for a given bubble size density distribution affecting the probe under a heterogeneously bubbling condition has been demonstrated. Three backward transform techniques,
Weidong Liu +2 more
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Abstract The probability relationships between bubble sizes and chord lengths in an heterogeneously bubbling system have been analyzed. A forward transform of chord length distribution for a given bubble size density distribution affecting the probe under a heterogeneously bubbling condition has been demonstrated. Three backward transform techniques,
Weidong Liu +2 more
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