Full-text resources of PSJD and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl
Preferences help
Polish version English version Language
enabled [disable] Abstract
Number of results

Results found: 6

Number of results on page
first rewind previous Page / 1 next fast forward last

Search results

Search:
in the keywords:  LES
help Sort By:

help Limit search:
first rewind previous Page / 1 next fast forward last
1
Content available remote

Transient CFD simulations of turbulent liquid - liquid flow in a Kenics static mixer. Radial and tangential velocities

100%
Murasiewicz H., Jaworski Z.
Polish Journal of Chemical Technology
|
2009
|
vol. 11
|
issue 2
36-40
EN
The results of modelling of the two-phase turbulent flow of a two-phase, liquid-liquid mixture in a Kenics static mixer were reported. Advanced transient simulations were performed using the large eddy simulation (LES) approach and a broader analysis of the velocity field was carried out. The two-phase flow was modelled employing the Eulerian approach in the pseudo-homogeneous version of the mixture model. Three cases were again considered, which differed by the density of the two phases and the simulations were performed for Reynolds number of 10,000. The LES results for the tangential and radial components were compared with those obtained in the steady-state RANS approach.
2
Content available remote

Local distributions of fluid velocity and tracer concentration in a tank reactor

88%
Makowski Ł., Orciuch W.
Chemical and Process Engineering
|
2011
|
vol. 32
|
issue 1
33-40
EN
The aim of the project was to collect experimental data regarding local distributions of fluid velocity and inert tracer concentration in a tank reactor with turbulent flow. The experiments were performed in a microscale in a region of tracer fluid injection. The results of experiments can be used for direct validation of currently developed CFD models, particularly for time-dependent mixing models used in LES.
3
Content available remote

Comparison of Large Eddy Simulations and κ-ε Modelling of Fluid Velocity and Tracer Concentration in Impinging Jet Mixers

88%
Wojtas K., Orciuch W., Makowski Ł.
Chemical and Process Engineering
|
2015
|
vol. 36
|
issue 2
251-262
EN
Simulations of turbulent mixing in two types of jet mixers were carried out using two CFD models, large eddy simulation and κ-ε model. Modelling approaches were compared with experimental data obtained by the application of particle image velocimetry and planar laser-induced fluorescence methods. Measured local microstructures of fluid velocity and inert tracer concentration can be used for direct validation of numerical simulations. Presented results show that for higher tested values of jet Reynolds number both models are in good agreement with the experiments. Differences between models were observed for lower Reynolds numbers when the effects of large scale inhomogeneity are important.
4
Publication available in full text mode
Content available

Comparison of Large Eddy Simulations and κ-ε Modelling of Fluid Velocity and Tracer Concentration in Impinging Jet Mixers

75%
Wojtas K., Makowski Ł., Orciuch W.
Chemical and Process Engineering
|
2015
|
issue 2
5
Publication available in full text mode
Content available

Local distributions of fluid velocity and tracer concentration in a tank reactor

75%
Makowski Ł., Orciuch W.
Chemical and Process Engineering
|
2011
|
issue 1
6
Content available remote

CFD modelling of two-phase liquid-liquid flow in a SMX static mixer

75%
Pianko-Oprych P., Jaworski Z.
|
EN
The paper provides an overview of the application of Computational Fluid Dynamics tools for predicting transport processes in two-phase flow in a SMX static mixer. The overview is achieved by taking a brief look at factors: mesh generation, development of sub-models, post-processing including validation and quantitative verification of CFD results with experimental data. Two types of numerical approach were used in the simulations: the Reynolds averaged Navier-Stokes in the steady-state mode with the standard k-??turbulence model and Large Eddy Simulations in the unsteady mode. Both CFD techniques were applied to calculate flow velocities, pressure drop and homogenisation level in a SMX static mixer of the liquid-liquid mixture. The steady state drop size distribution was obtained by implementation procedure containing the population balance equation, where transport equations for the moments of the drop size distribution are solved and the closure problem is overcome by using the Quadrature Method of Moments.
first rewind previous Page / 1 next fast forward last
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.