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Binxin Wu Large eddy simulation of mechanical mixing in anaerobic digesters Biotechnology and Bioengineering 109

Article first published online: 28 OCT 2011 | DOI: 10.1002/bit.24345

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Large eddy simulation of mechanical mixing in anaerobic digesters is conducted using Smagorinsky-Lilly, wall-adapting local eddy-viscosity, and kinetic energy transport models, respectively, in which the impeller rotation is characterized by the sliding mesh method. The simulation results indicate that the kinetic energy transport model performs the best in terms of predicting the impeller power and flow numbers, and that a large eddy simulation performs better than a Reynolds-averaged Navier-Stokes simulation in the study of turbulent flow.

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