Evaluation of Drag Force Effect on Hold-Up in a Gas-Liquid Stirred Tank Reactor
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- Zadghaffari Ramin
- Transport Phenomena Research Center, Chemical Engineering Faculty, Sahand University of Technology
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- Moghaddas Jafar Sadegh
- Transport Phenomena Research Center, Chemical Engineering Faculty, Sahand University of Technology
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A comprehensive computational method based on the Eulerian–Eulerian approach is presented for gas–liquid flows in a mechanically stirred vessel. Separate submodels were developed to investigate the influence of the drag coefficient on bubbles due to the interaction between bubbles and turbulence. A new model is used for the definition of drag coefficient and a detailed simulation method is used to estimate the interphase drag force. A standard k−ε turbulent model is used and the impeller rotation is modelled by the multiple reference frame approach. Simulation results are compared with previous drag models and the experimental measurements. The results indicate that the new model is able to predict the influence of turbulent intensity on drag coefficient and the distribution of gas holdup. The computational model and the proposed correlation for drag in turbulent flow will be useful for simulation gas holdup distribution and flow regimes in stirred vessels.
収録刊行物
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- JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
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JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 43 (10), 833-840, 2010
公益社団法人 化学工学会
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詳細情報 詳細情報について
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- CRID
- 1390282679544153216
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- NII論文ID
- 10028157143
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- NII書誌ID
- AA00709658
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- ISSN
- 18811299
- 00219592
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- NDL書誌ID
- 10921302
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可