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Study of the gas flow inside cyclones using computational fluid dynamics.

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Fabiana Sanches Cruz
Total Authors: 1
Document type: Master's Dissertation
Press: São Paulo.
Institution: Universidade de São Paulo (USP). Escola Politécnica (EP/BC)
Defense date:
Examining board members:
José Luis de Paiva; Milton Mori; Ardson dos Santos Vianna Júnior
Advisor: José Luis de Paiva

The flow field of a gas cyclone was simulated with a RANS model using Computational Fluid Dynamics (CFD) and the Precession of the Vortex Core (PVC) was investigated. The CFD simulations were carried out using the open source code OpenFOAM and the simulations were performed in a transient regime. Two Reynolds Stress Turbulence Models (RSTM) were investigated - the LRR model with standard constants and another with modified constants in the pressure-strain term. The results obtained by the models were compared with values of mean velocity taken from the literature and predictions were satisfactory. However, only the LRR model with standard constants predicted with precision the fluctuation velocity field. The precessing vortex was detected and illustrated by the flow field visualization and a characteristic frequency was calculated by Power Spectrum Density. (AU)

FAPESP's process: 11/04751-5 - Study of the gas flow inside cyclones using computational fluid dynamics
Grantee:Fabiana Sanches Cruz
Support Opportunities: Scholarships in Brazil - Master