CFD simulations of bubble column reactors: 1D, 2D and 3D approach

Ekambara, K.; Dhotre, M.T.; Joshi, Jyeshtharaj B.

doi:10.1016/j.ces.2005.05.047

Cited by 124 publications

(67 citation statements)

References 44 publications

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“…The turbulence of the continuous phase was incorporated through different models like the k-ε model (e.g. Pfleger et al [10], Ekambara et al [11]), k-ω model (e.g. Bech [12]), Reynolds Stress Model (e.g.…”

Section: Introductionmentioning

confidence: 99%

Large eddy simulation of a bubble column using dynamic sub-grid scale model

Dhotre

Ničeno

Smith

2008

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

Large eddy simulation of a bubble column using dynamic sub-grid scale model

Dhotre

Ničeno

Smith

2008

Chemical Engineering Journal

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“…The pioneering work, performed among in 1989 and 1999, reproduced the fluid dynamics in rectangular bubble columns using two-dimensional Eulerian simulations [403][404][405][406][407][408][409][410][411][412]. However, other authors [413][414][415][416] remarked that, for more accurate predictions of the bubble plume oscillation period and the turbulent quantities, three-dimensional simulations are required for both rectangular [413][414][415] and circular [416] columns. In addition, high order discretization schemes should be applied, regardless of the closure models implemented [417][418][419][420][421].…”

Section: The Eulerian Multi-fluid Approachmentioning

confidence: 99%

Two-Phase Bubble Columns: A Comprehensive Review

2018

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We present a comprehensive literature review on the two-phase bubble column; in this review we deeply analyze the flow regimes, the flow regime transitions, the local and global fluid dynamics parameters, and the mass transfer phenomena. First, we discuss the flow regimes, the flow regime transitions, the local and global fluid dynamics parameters, and the mass transfer. We also discuss how the operating parameters (i.e., pressure, temperature, and gas and liquid flow rates), the operating modes (i.e., the co-current, the counter-current and the batch modes), the liquid and gas phase properties, and the design parameters (i.e., gas sparger design, column diameter and aspect ratio) influence the flow regime transitions and the fluid dynamics parameters. Secondly, we present the experimental techniques for studying the global and local fluid dynamic properties. Finally, we present the modeling approaches to study the global and local bubble column fluid dynamics, and we outline the major issues to be solved in future studies.

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“…Joshi & Ranade (2003) have given an overview of opportunities and scope of CFD. Ranade et al (1989;Ranade & Joshi 1990, Murthy & Joshi (2008), Ekambara et al (2005), Additional work is also needed to understand the relationship between the structure dynamics and heat transfer as well as pressure drop. (vi) For crimped spiral fins, all the studies have been experimental and empirical correlations have been developed.…”

Section: Conclusion and Recommendation For Future Workmentioning

confidence: 96%

A review on the thermal hydraulic characteristics of the air-cooled heat exchangers in forced convection

Kumar

Joshi

Nayak

et al. 2015

Sadhana

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In this paper, a review is presented on the experimental investigations and the numerical simulations performed to analyze the thermal-hydraulic performance of the air-cooled heat exchangers. The air-cooled heat exchangers mostly consist of the finned-tube bundles. The primary role of the extended surfaces (fins) is to provide more heat transfer area to enhance the rate of heat transfer on the air side. The secondary role of the fins is to generate vortices, which help in enhancing the mixing and the heat transfer coefficient. In this study, the annular and plate fins are considered, the annular fins are further divided into four categories: (1) plane annular fins, (2) serrated fins, (3) crimped spiral fins, (4) perforated fins, and similarly for the plate fins, the fin types are: (1) plain plate fins, (2) wavy plate fins, (3) plate fins with DWP, and (4) slit and strip fins. In Section 4, the performance of the various types of fins is presented with respect to the parameters: (1) Reynolds number, (2) fin pitch, (3) fin height, (4) fin thickness, (5) tube diameter, (6) tube pitch, (7) tube type, (8) number of tube rows, and (9) effect of dehumidifying conditions. In Section 5, the conclusions and the recommendations for the future work have been given.

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CFD simulations of bubble column reactors: 1D, 2D and 3D approach

Cited by 124 publications

References 44 publications

Large eddy simulation of a bubble column using dynamic sub-grid scale model

Large eddy simulation of a bubble column using dynamic sub-grid scale model

Two-Phase Bubble Columns: A Comprehensive Review

A review on the thermal hydraulic characteristics of the air-cooled heat exchangers in forced convection

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