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Paper 270

Computational Fluid Dynamics Modelling of Unconfined Gas Mixing of Wastewater Sludge in a Full Scale Anaerobic Digester

D. Dapelo and J. Bridgeman

School of Civil Engineering, University of Birmingham, United Kingdom

doi:10.4203/ccp.108.270

D. Dapelo, J. Bridgeman, "Computational Fluid Dynamics Modelling of Unconfined Gas Mixing of Wastewater Sludge in a Full Scale Anaerobic Digester", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 270, 2015. doi:10.4203/ccp.108.270

Keywords: wastewater, sludge, computational fluid dynamics, Euler-Lagrangian, turbulence, non-Newtonian fluid, energy.

Summary

In this paper, an Euler-Lagrange model for computational fluid dynamics was used to model a full-scale gas-mixed anaerobic digester. The flow profiles, local values of non-Newtonian viscosity and average shear rate were analysed. Recommendations to enhance the effectiveness of mixing were given. In particular, the gas mixing input power can be reduced without appreciable detrimental effects on the mixing effectiveness.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 108 PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping Paper 270 Computational Fluid Dynamics Modelling of Unconfined Gas Mixing of Wastewater Sludge in a Full Scale Anaerobic Digester D. Dapelo and J. Bridgeman School of Civil Engineering, University of Birmingham, United Kingdom doi:10.4203/ccp.108.270 purchase the full-text of this paper Full Bibliographic Reference for this paper D. Dapelo, J. Bridgeman, "Computational Fluid Dynamics Modelling of Unconfined Gas Mixing of Wastewater Sludge in a Full Scale Anaerobic Digester", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 270, 2015. doi:10.4203/ccp.108.270 Keywords: wastewater, sludge, computational fluid dynamics, Euler-Lagrangian, turbulence, non-Newtonian fluid, energy. Summary In this paper, an Euler-Lagrange model for computational fluid dynamics was used to model a full-scale gas-mixed anaerobic digester. The flow profiles, local values of non-Newtonian viscosity and average shear rate were analysed. Recommendations to enhance the effectiveness of mixing were given. In particular, the gas mixing input power can be reduced without appreciable detrimental effects on the mixing effectiveness. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £75 +P&P)
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