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Original Articles

Air stream velocity modelling in multichannel spiral cyclone separator

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Pages 183-193 | Received 06 Nov 2013, Accepted 30 May 2014, Published online: 22 Sep 2014
 

Abstract

Numerical modelling problem is investigated in a gas aerodynamics multichannel spiral cyclone separator with a tangential inflow. Experimental and theoretical papers analysing cyclone separator with particularly complex turbulent flow were reviewed. The three-dimensional transport differential equations for incompressible laminar and turbulent flow inside the cyclone separator were presented. They were numerically solved by finite volume method using the Re-Normalisation Group (hereinafter RNG) k-ε turbulence model. The numerical air flow movement was modelled in cyclone separator with the following dimensions: 0.95 m height, 0.330 m diameter, 0.88 m height of spiral-cylindrical part, 0.39 m height of conical part, inflow dimensions (on the side of cylindrical part) according to the drawings were a × b = 28 × 95 mm. The mathematical model of air flow movement in cyclone separator was composed by Navier-Stokes (Reynolds) as the three-dimensional differential equation system. The modelling results were obtained by the tangential and axial velocity profiles in cyclone separator using RNG k-ε turbulence model, the inflow velocity from 4.1 m/s to 15.4 m/s coincided well with the experimental results. This is the first article testing for multichannel cyclone and determined distributions of aerodynamic parameters. The absolute error between experimental and modelling results changed from 0.01 to 0.24 units.

Additional information

Notes on contributors

Petras Vaitiekūnas

Petras VAITIEKŪNAS. Prof. Dr Habil. of Technical Sciences at the Department of Environmental Protection, Vilnius Gediminas Technical University. A diploma in mathematics received from Vilnius University (1965). Dr of Technical Sciences (1973). Dr Habil (1999). Assoc. Prof. (1997). Prof. at the Department of Environmental Protection, VGTU (2002). Training in London, PHOENICS 1.4 EP CFD (January-February 1996) and PHOENICS 3.1 VR CFD (April-May 1998). He is the author and co-author of 3 monographs and more than 200 scientific articles. Research interests: simulated dynamics of fluids, theoretical thermal physics, laminar, transfer processes and simulation of turbulent pollutants.

Egidijus Petraitis

Egidijus PETRAITIS. Associate Professor of Environmental Engineering Department, VGTU, since 2010. Expertise in projects on air pollution research topics, energy facilities environmental impact assessment, noise dispersion modelling, preparation of feasibility studies, lectures and practical works. A diploma in in the field of technological science (2003), Senior Researcher (2004). Assoc. Prof., Senior Researcher (2009). Prof. at the Department of Environmental Protection, VGTU (2002). Experimental and theoretical studies of environmental systems and environmental technologies, environmental pollution impact on motor testing and evaluation. Author of more than 54 scientific publications; 1 monograph, 2 training books, 1 patent. Author participated in 15 conferences.

Albertas Venslovas

Albertas VENSLOVAS. PhD student (2008), Department of Environmental Protection, Vilnius Gediminas Technical University. Master of Science (Environmental Engineering), VGTU, 2008. Bachelor of Science (Environmental Engineering), LŽŪU, 2006. Research interests: environmental protection, environmental noise, environmental noise modelling, scrap-tire crumb rubber application in noise-suppression structures. Author of 5 scientific publications. Author participated in 6 conferences.

Aleksandras Chlebnikovas

Aleksandras CHLEBNIKOVAS. Assistant of the Department of Environmental Protection and engineer of the Research Institute of Environmental Protection at Vilnius Gediminas Technical University (Lithuania). A diploma in Master's of Environmental Protection in the field of technological science received in 2012. Laureate of Students’ Scientific Works award established by the Research Academy of Lithuania. Junior researcher of the Agency for Science, Innovation and Technology Design of New Generation Multi-Cyclone (DAKACIKAS). Engineer in the application of the spiral treatment device with a curvilinear channels for discrete phase treating. Author of 2 scientific publications. Participated in 3 conferences.

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