Numerical and physical modelling of bubbly flow phenomena. Progress report

Technical Report · Sat Feb 01 04:00:00 EST 1992

DOI:https://doi.org/10.2172/10125973· OSTI ID:10125973

Sangani, A S

The objective of the proposed research is to develop a theoretical framework for analyzing various two-phase flows, with special emphasis on the flows, with special emphasis on the flows of gas- liquid dispersions. The macroscopic behavior of these flows depends on the details of the microstructure of the dispersion, and these details, in turn, depend on the nature of the flow. Given the very diverse nature of the flows and their complex dependence on the microstructure of the dispersion, it is unlikely that a single set of equations, similar to the Navier-Stokes equations for homogeneous fluids, will apply to all the different situations. What is possible, however, is to develop general methodologies that can be used to examine specific situations and a general understanding about different kinds of macroscopic flows. The aim of the proposed research is to develop efficient numerical techniques for carrying out dynamic simulations of flows of dispersions and to apply them to a carefully selected problems whose solutions would reveal important qualitative as well as quantitative insights into the complex interdependence of the microstructure and macroscopic properties of the flows. These numerical techniques are to be supplemented with the techniques of ensemble averaging and statistical physics to obtain results that could be used in modelling more complicated flows through a set of relatively simple equations. Two classes of macroscopic flows were analyzed in detail during the current funding period. The first is the oscillatory flows, as in the case of acoustic or pressure wave propagation through bubbly liquids, and the second is convective flows as in bubbles rising through a liquid. 20 refs.

• Research Organization: Syracuse Univ., NY (United States). Dept. of Chemical Engineering and Materials Science
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-90ER14136
• OSTI ID: 10125973
• Report Number(s): DOE/ER/14136--T1; ON: DE92008642
• Country of Publication: United States
• Language: English

Related Subjects

665000
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
99 GENERAL AND MISCELLANEOUS
990200
BUBBLES
DISPERSIONS
DYNAMICS
GASES
LIQUIDS
MATHEMATICAL MODELS
MATHEMATICS AND COMPUTERS
MONTE CARLO METHOD
NUMERICAL SOLUTION
PHYSICS OF CONDENSED MATTER
PROGRESS REPORT
SOUND WAVES
STATISTICAL MECHANICS
TWO-PHASE FLOW