Modelling of dust lifting process behind propagating shock wave |
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Authors: | Przemyslaw Zydak Rudolf Klemens |
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Affiliation: | aInstitute of Heat Engineering, Warsaw University of Technology, ul. Nowowiejska 25, 00 665 Warsaw, Poland |
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Abstract: | Dust dispersion from a layer is a complicated problem, which has not been completely solved yet, especially if an Eulerian–Eulerian approach has to be used to model the two-phase dusty flow. In previous investigation, a phenomenological model of the dust dispersion process from a layer was developed, but the evaluation of the model revealed some weaknesses. In the current paper, the model of the dust dispersion process was presented and three improvements of the model were studied: Saffman force, Magnus force and particles collisions. The implementation of Magnus and Saffman forces into the code did not improve the numerical results and it was shown that it had very little influence on the dust lifting process, in case the phenomenological model of the layer is used. Some explanations were proposed in the paper. Besides, an empirical model of particles collisions was also added to the code and its influence on the results was studied. It was shown that the particles collisions model improved the obtained results, but further modifications are to be studied in the future. |
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Keywords: | Dust layer Shock wave Dust dispersion CFD Two-phase flow modelling |
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