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1 2006

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Numerical simulation of dust lifting process from the layer behind propagating shock wave

Zydak P., Klemens R.

Journal of KONES

2006

Vol. 13, No. 2

465-477

The numerical simulations of physical processes constitute a great challenge for scientists. Many new models have been being developed and the ones that already exist are being improved. Many experiments are no longer needed to be performed in reality but can be replaced by numerical simulations. Many others that could not be done up to now, due to high cost or technical unfeasibility, can be performed using numerical models. Despite that many problems have not been fully resolved lots of work is still to be done. One of the phenomena that has not been fully explained and properly modeled - is the dust listing process from the layer. In the current research, the model of dust lifting process has been developed where the dust is not modeled directly but replaced by an injection of dust from the bottom of the channel. The parameters of the dust injection were obtained from previous experiments. The main advantage of this approach is the possibility of using sparse meshes which are required in modeling of large scale geometries. The model was implemented in a CFD code and calculations were made to test the ability of the model to simulate dust dispersion from a layer in a shock tube. The results were compared with the experimental data and a good agreement was concluded