• International Journal of Technology (IJTech)
  • Vol 7, No 2 (2016)

CFD Analysis of Slurry Flow in an Anaerobic Digester

CFD Analysis of Slurry Flow in an Anaerobic Digester

Title: CFD Analysis of Slurry Flow in an Anaerobic Digester
Ahmad Indra Siswantara , Asyari Daryus, Steven Darmawan, Gun Gun R. Gunadi, Rovida Camalia

Corresponding email:


Published at : 29 Feb 2016
Volume : IJtech Vol 7, No 2 (2016)
DOI : https://doi.org/10.14716/ijtech.v7i2.2977

Cite this article as:

Siswantara, A.I., Daryus, A., Darmawan, S., Gunadi, G.G.R., Camalia, R., 2016. CFD Analysis of Slurry Flow in an Anaerobic Digester. International Journal of Technology. Volume 7(2), pp.197-203



778
Downloads
Ahmad Indra Siswantara Department of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia
Asyari Daryus Department of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia
Steven Darmawan Department of Mechanical Engineering, Universitas Tarumanagara, Jakarta 11440, Indonesia
Gun Gun R. Gunadi Department of Mechanical Engineering, Jakarta State Polytechnic, Depok, West Java, Indonesia
Rovida Camalia Department of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia
Email to Corresponding Author

Abstract
CFD Analysis of Slurry Flow in an Anaerobic Digester

This study uses biogas, an environmentally friendly renewable energy resource, to operate the prototype of a micro-gas turbine (MGT) system called the Proto X-3 Bioenergy Micro-gas Turbine, designed for green building application. The biogas is produced by an anaerobic digester. The aim of this research is to simulate slurry flow in an anaerobic digester as the basis for developing a biogas digester that will produce biogas to meet the requirements of the Proto X-3 Bioenergy Micro-gas Turbine. The digester is a rectangular type with 3.4 m3 capacity. The flow calculations and simulations were done using Computational Fluid Dynamics (CFD) methods in two-dimensional, body-fitted coordinate mesh. The simulations were conducted with various baffle clearances for the digester: 50 mm, 100 mm, and 150 mm. The CFD simulations showed that the recirculation phenomena was found in all flows but that the 50-mm baffle clearance model had the largest recirculation, and it would lead to better mixing of the slurry.

Anaerobic digestion, Biogas, CFD, Green building, Micro gas turbine, Turbulence modelling

References

Coughtrie, A.R., Borman, D.J., Sleigh, P.A., 2013. Effects of Turbulence Modelling on Prediction of Flow Characteristics in a Bench-scale Anaerobic Gas-lift Digester. Journal of Bioresource Technology, Volume 138, pp. 297-306

Craig, K.J., Nieuwoudt, M.N., Niemand, L.J., 2013. CFD Simulation of Anaerobic Digester with Variable Sewage Sludge Rheology. Journal of Water Research, Volume 47, pp. 4485-4497

Lopez-Jimenez, P.A., Escudero-Gonzalez, J., Martinez, T.M., 2015. Application of CFD Methods to an Anaerobic Digester: The Case of Ontinyent WWTP, Valencia, Spain. Journal of Water Process Engineering, Volume 7, pp. 131-140

Mendoza, A.M., Martinez, T.M., Montanana, V.F., Jimenez, P.A.L., 2011. Modelling Flow Inside an Anaerobic Digester by CFD Techniques. International Journal of Energy and Environtment, Volume 2(6), pp. 963-974

Paepe, W.D., Contino, F., Delattin, F., Bram, S., 2014. Optimal Waste Heat Recovery in Micro Gas Turbine Cycles through Liquid Water Injection. Journal of Applied Thermal Engineering, Volume 70, pp. 846-856

Renzi, M., Caresana, F., Pelagalli, L., Comodi, G., 2014. Enhancing Micro Gas Turbine Performance through Fogging Technique: Experimental Analysis. Journal of Applied Energy, Volume 135, pp. 165-173

Shen, F., Tian, L., Yuan, H., Pang, Y., Chen, S., Zou, D., Li, X., 2013. Improving the Mixing Performances of Rice Straw Anaerobic Digestion for Higher Biogas Production by Computational Fluid Dynamics (CFD) Simulation. Journal of Applied Biochemistry and Biotechnology, Volume 171, pp. 626-642

Wu, B., Bibeau, E.L., Gebremedhin, K.G., 2009. Three-dimensional Numerical Simulation Model of Biogas Production for Anaerobic Digesters. Journal of Canadian Biosystems Engineering, Volume 51, pp. 8.1-8.7

Wu, B., 2014. CFD Simulation of Gas Mixing in Anaerobic Digesters. Journal of Computers and Electronics in Agriculture, Volume 109, pp. 278-286