CFD modeling and simulation of turbulent fluid flow and dust dispersion in the 20-L explosion vessel equipped with the perforated annular nozzle |
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| Institution: | 1. Istituto di Ricerche sulla Combustione – Consiglio Nazionale delle Ricerche (IRC-CNR), Piazzale Tecchio 80, 80125, Napoli, Italy;2. Dipartimento di Ingegneria Chimica Materiali Ambiente, Sapienza Università di Roma, Via Eudossiana 18, 00184, Roma, Italy;3. Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi Federico II, Piazzale Tecchio 80, 80125, Napoli, Italy;1. School of Chemical Machinery, Dalian University of Technology, Dalian, Liaoning 116024, PR China;2. Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan;3. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230027, PR China;1. Institute for Research on Combustion-CNR, P.le Tecchio 80, 80125 Naples, Italy;2. DICMAPI, University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy;1. Research Institute on Combustion-CNR, P.le Tecchio 80, 80125 Naples, Italy;2. DICMAPI, University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Italy;1. Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, P.le Tecchio 80, 80125 Napoli, Italy;2. Istituto di Ricerche sulla Combustione, Consiglio Nazionale delle Ricerche (CNR), P.le Tecchio 80, 80125 Napoli, Italy |
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| Abstract: | A three-dimensional CFD model was developed to simulate the turbulent flow field induced by dust feeding and the associated dust dispersion within the 20-L explosion vessel equipped with the perforated annular nozzle. The model was validated against experimental data for pressure and root mean square velocity.Simulation results have shown that the turbulent kinetic energy is rather uniformly distributed and its values are significantly lower than those attained with the rebound nozzle. Furthermore, the perforated annular nozzle is able to generate a uniform dust/air cloud. However, a consistent fraction of the dust remains trapped inside the nozzle and, thus, it does not contribute to the explosion process. |
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| Keywords: | Process safety Dust explosion CFD simulations Standard explosion vessel Turbulence Dust dispersion |
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