A low Reynolds number k–ε model for the prediction of flow pattern and pressure drop in bubble column reactors

Vitankar, Vivek; Dhotre, M.T.; Joshi, Jyeshtharaj B.

doi:10.1016/s0009-2509(02)00196-3

Cited by 26 publications

(14 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because of the large interfacial area available, bubble columns offer excellent heat-and mass-transfer characteristics and thus are the reactors of choice for slow chemical reactions and exothermic or endothermic processes. 1 The movement of bubble plumes and the chaotic threedimensional (3-D) vortical structures dominate bubble-column hydrodynamics. 2 For this reason, computational fluid dynamics (CFD) has been promoted as a useful tool for understanding bubble-column flow behavior.…”

Section: Introductionmentioning

confidence: 99%

CFD predictions for flow‐regime transitions in bubble columns

2005

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

CFD predictions for flow‐regime transitions in bubble columns

2005

View full text Add to dashboard Cite

“…The values of other constants are C = 0.09, C 1 = 1.35, C 2 = 1.8 and σ = 1.3 as suggested by Lai and So [5]. Interfacial forces between gas bubbles and liquid, modeling of pressure gradient and the other related issues have been discussed in Vitankar et al [6].…”

Section: Cfd Model For Flow Patternmentioning

confidence: 96%

CFD simulation of steady state heat transfer in bubble columns

Dhotre

Vitankar

Joshi

2005

Chemical Engineering Journal

View full text Add to dashboard Cite

“…Apart from that, pressure drop in bubble column also has been affected by the superficial gas velocity and the wall shear stress [21] [22]. In the presence of bubbles, the pressure drop increases as the phase velocity is higher than the superficial velocity and this causes the turbulence further higher [22].…”

Section: Literature Reviewmentioning

confidence: 99%

“…In the presence of bubbles, the pressure drop increases as the phase velocity is higher than the superficial velocity and this causes the turbulence further higher [22].…”

Section: Literature Reviewmentioning

confidence: 99%

Effects of Swirl Bubble Injection on Mass Transfer and Hydrodynamics for Bubbly Flow Reactors: A Concept Paper

et al. 2016

View full text Add to dashboard Cite

Abstract. Bubble flow reactors (BFR) are commonly used for various industrial processes in the field of oil and gas production, pharmaceutical industries, biochemical and environmental engineering etc. The operation and performance of these reactors rely heavily on a range of hydrodynamic parameters; prominent among them are geometric configurations including gas injection geometry, operating conditions, mass transfer etc. A huge body of literature is available to describe the optimum design and performance of bubbly flow reactors with conventional bubble injection. Attempts were made to modify gas injection for improved efficiency of BFR's. However, here instead of modifying the geometry of the gas injection, an attempt has been made to generate swirl bubbles for gaining larger mass transfer between gas and liquid. Here an exceptionally well thought strategies have been used in our numerical simulations towards the design of swirl injection mechanism, whose paramount aspect is to inhibit the rotary liquid motion but facilitates the swirl movement for bubbles in nearly stationary liquid. Our comprehension here is that the swirl motion can strongly affect the performance of bubbly reactor by identifying the changes in hydrodynamic parameters as compared to the conventional bubbly flows. In order to achieve this bubbly flow, an experimental setup has been designed as well as computational fluid dynamic (CFD) code was used with to highlight a provision of swirl bubble injection by rotating the sparger plate.

show abstract

A low Reynolds number k–ε model for the prediction of flow pattern and pressure drop in bubble column reactors

Cited by 26 publications

References 25 publications

CFD predictions for flow‐regime transitions in bubble columns

CFD predictions for flow‐regime transitions in bubble columns

CFD simulation of steady state heat transfer in bubble columns

Effects of Swirl Bubble Injection on Mass Transfer and Hydrodynamics for Bubbly Flow Reactors: A Concept Paper

Contact Info

Product

Resources

About