Flow field inside tangential cyclone separator is a kind of complex three-dimensional rotation turbulent flow. To optimize the flow field structure and shorten the cycle of research and development, it is essential to find an appropriate calculation method to predict the flow field inside cyclone separators. In the article, FLUENT software is employed to obtain the internal flow field of tangential inlet cyclone separator by adopting different calculation models and different numerical simulation scheme. Also the simulation result was compared with that of existing experiment data to find a reasonable solution for the simulation of the flow field characteristics inside the cyclone. After the examination to the rationality of the different numerical simulation method, and the comparative analysis in the main flow field parameters of the simulated results which is the most reasonable combination, the flow characteristics of internal flow field of tangential inlet cyclone separator was obtained.
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