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Improving the performance of mechanical stirring in biogas plant by computational fluid dynamics (CFD) CIGR Journal
Mohammadrezaei, Rashed; Zareei, Samira; Behroozi-Khazaei, Nasser.
Stirring of material in biogas plant needs to be done to provide desirable contact between microorganisms and substrate which can improve digestion process. In the present study, computational fluid dynamics (CFD) was used to determine a suitable mechanical stirrer for biogas plant and simulate the flow pattern. In order to select optimum design of impeller, three types of impeller including six-blade turbine, four-blade turbine and six-flat-blade disc turbine were evaluated. Simulations were undertaken utilizing Fluent 15.0 software with a multiple reference frame approach via standard k-ε turbulence model under steady-state conditions. According to the simulation results, six-blade turbine impeller is more appropriate than the two other impellers. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Energy; Biogas; Stirrer Anaerobic digestion cow manure flow pattern simulation stirred tank.
Ano: 2018 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4183
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