Analysis of Numerical Modelling of Turbulence in a Conical Reverse-Flow Cyclone
Journal Title: Journal of Environmental Engineering and Landscape Management - Year 2010, Vol 18, Issue 4
Abstract
This paper aims to analyse the problem of numerical modelling of the airflow in a conical reverse-flow (CRF) cyclone with tangential inlet (equipment for separation of solid particles from gaseous fluid flow). A review of experimental and theoretical papers that describe cyclones with very complex swirling flow is performed. Three-dimensional transport differential equations for incompressible turbulent flow inside a cyclone are solved numerically using finite volume-based turbulence models, namely, the Standard k–ε model, the RNG k–ε model and the Reynolds stress model (RSM). The paper describes the numerical modelling of the airflow in the CRF cyclone, the height of which is 0.75 m, diameter - 0.17 m, height of cylindrical part - 0.255 m, height of conical part - 0.425 m, inlet area is 0.085×0.032 m[sup]2[/sup]. Mathematical model of airflow in a cyclone consisted of Navier-Stokes (Reynolds) three-dimensional differential equation system. Modelling results, obtained from the numerical tests when inlet velocity is 4.64, 9.0 and 14.8 m/s and flow rate is, respectively, 0.0112, 0.0245 and 0.0408 (0.0388) m[sup]3[/sup]/s, have demonstrated a reasonable agreement with other authors’ experimental and theoretical results. The average relative error was ± 7.5%.
Authors and Affiliations
Petras Vaitiekūnas, Inga Jakštonienė
Keywords
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- EP ID EP85149
- DOI 10.3846/jeelm.2010.37
- Views 103
- Downloads 0
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Analysis of Numerical Modelling of Turbulence in a Conical Reverse-Flow Cyclone
This paper aims to analyse the problem of numerical modelling of the airflow in a conical reverse-flow (CRF) cyclone with tangential inlet (equipment for separation of solid particles from gaseous fluid flow). A review o...