Evaluation AC3-12: Difference between revisions
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recirculation bubble and the extension of the recirculation at the edge | recirculation bubble and the extension of the recirculation at the edge | ||
of the pipe expansion are in good agreement with the measured results. | of the pipe expansion are in good agreement with the measured results. | ||
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|align="center" width=650px|'''Figure 10:''' Measured and calculated gas-phase streamlines (the upper parts of each figure corresponds to the calculations and the lower parts show the measurements); (a) Case 1; (b) Case 2. | |||
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Revision as of 10:15, 12 February 2013
Particle-laden swirling flow
Application Challenge AC3-12 © copyright ERCOFTAC 2013
Comparison of Test Data and CFD
A rather good agreement between the experiments and predictions was obtained for gas and particle phase in both swirling cases considered. The comparison of the calculated streamlines of the gas flow with those obtained from the integration of the measured axial velocity shows that the flow field is predicted reasonably well for both conditions (Figure 10). The most obvious difference is that the axial extension of the central recirculation bubble is predicted to be larger at the top and downstream ends for both cases. The predicted width of the central recirculation bubble and the extension of the recirculation at the edge of the pipe expansion are in good agreement with the measured results.
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| Figure 10: Measured and calculated gas-phase streamlines (the upper parts of each figure corresponds to the calculations and the lower parts show the measurements); (a) Case 1; (b) Case 2. |
Contributed by: Martin Sommerfeld — Martin-Luther-Universitat Halle-Wittenberg
© copyright ERCOFTAC 2013