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1

Numerical Simulation of Viscoelastic Fluid Flow in Stirred Vessels

100%

Kolano M., Brehmer M., Kraume M.

Czasopismo Techniczne

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-

PL

In this work, a tool for calculating viscoelastic flows with rotating geometries in OpenFOAM based on the finite-volume method is presented. The tool combines the split-stress tensor approach and viscoelastic differential constitutive equations with the sliding-mesh technique. With this tool, a CFD simulation was run for a geometry of a spherical stirrer in an aqueous solution of carboxyl cellulose. Additionally, a rheological characterisation of that solution was conducted. For validation, the simulations were compared with flow field data acquired through particle image velocimetry measurements.

2

Numerical Simulation of Viscoelastic Fluid Flow in Stirred Vessels

100%

Kolano M., Brehmer M., Kraume M.

Czasopismo Techniczne

|

-

PL

In this work, a tool for calculating viscoelastic flows with rotating geometries in OpenFOAM based on the finite-volume method is presented. The tool combines the split-stress tensor approach and viscoelastic differential constitutive equations with the sliding-mesh technique. With this tool, a CFD simulation was run for a geometry of a spherical stirrer in an aqueous solution of carboxyl cellulose. Additionally, a rheological characterisation of that solution was conducted. For validation, the simulations were compared with flow field data acquired through particle image velocimetry measurements.

3

Simulation of the Single Bubble Ascent with OpenFOAM

100%

Böhm L., Kolano M., Kraume M.

Czasopismo Techniczne

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-

PL

This project is motivated by the challenge of cleaning flat sheet membrane surfaces with the help of aeration. On the basis of earlier experiments and CFD simulations, a decision was made to use the CFD-tool OpenFOAM in contrast to earlier simulations which were performed with Ansys Fluent. In the new simulations, the advancing computing power allowed the simulation of a bubble ascent in the full channel which is of special interest in cases where the bubble size is smaller than the channel depths. Besides saving the licensing cost, OpenFOAM allows access to the source code and, therefore, easier implementation of sub-models if necessary.

4

Simulation of the Single Bubble Ascent with OpenFOAM

100%

Böhm L., Kolano M., Kraume M.

Czasopismo Techniczne

|

-

PL

This project is motivated by the challenge of cleaning flat sheet membrane surfaces with the help of aeration. On the basis of earlier experiments and CFD simulations, a decision was made to use the CFD-tool OpenFOAM in contrast to earlier simulations which were performed with Ansys Fluent. In the new simulations, the advancing computing power allowed the simulation of a bubble ascent in the full channel which is of special interest in cases where the bubble size is smaller than the channel depths. Besides saving the licensing cost, OpenFOAM allows access to the source code and, therefore, easier implementation of sub-models if necessary.

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4 Czasopismo Techniczne

4 2016

4 Kolano M.

4 Kraume M.

2 Brehmer M.

2 Böhm L.

Numerical Simulation of Viscoelastic Fluid Flow in Stirred Vessels

Numerical Simulation of Viscoelastic Fluid Flow in Stirred Vessels

Simulation of the Single Bubble Ascent with OpenFOAM

Simulation of the Single Bubble Ascent with OpenFOAM