Investigation of a free rising bubble with mass transfer by an arbitrary Lagrangian–Eulerian method

Jia, Hongwei; Xiao, Xin; Kang, Yanming

doi:10.1016/j.ijheatmasstransfer.2019.03.117

Cited by 27 publications

(14 citation statements)

References 40 publications

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“…Nevertheless, the application of microbubble instead of macrobubble aeration is known to reduce the foaming tendency as a result of high mass transfer and lower gassing rates (Tsuge, 2014). It seems that microbubbles completely dissolve in to the surrounding medium, which avoids or reduces the need for antifoaming agents (Guy, Carreau, & Paris, 1986; Jia, Xiao, & Kang, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Microbubble aeration offers several advantages due to its simple generation and promising high dissolution rates in aqueous media (Iwakiri et al, 2017; Jia et al, 2019). This enhanced mass transfer performance results first from the high volume‐specific interfacial area and second from the prolonged residence time by low rising velocity as shown in Figure 1 (Duval et al, 2012; Struthwolf & Blanchard, 1984; Terasaka et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Comparative investigation of fine bubble and macrobubble aeration on gas utility and biotransformation productivity

Thomas

Ohde

Matthes

et al. 2020

Biotech & Bioengineering

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The sufficient provision of oxygen is mandatory for enzymatic oxidations in aqueous solution, however, in process optimization this still is a bottleneck that cannot be overcome with the established methods of macrobubble aeration. Providing higher mass transfer performance through microbubble aerators, inefficient aeration can be overcome or improved. Investigating the mass transport performance in a model protein solution, the microbubble aeration results in higher k L a values related to the applied airstream in comparison with macrobubble aeration. Comparing the aerators at identical k L a of 160 and 60 1/h, the microbubble aeration is resulting in 25 and 44 times enhanced gas utility compared with aeration with macrobubbles. To prove the feasibility of microbubbles in biocatalysis, the productivity of a glucose oxidase catalyzed biotransformation is compared with macrobubble aeration as well as the gas-saving potential. In contrast to the expectation that the same productivities are achieved at identically applied k L a, microbubble aeration increased the gluconic acid productivity by 32% and resulted in 41.6 times higher oxygen utilization. The observed advantages of microbubble aeration are based on the large volume-specific interfacial area combined with a prolonged residence time, which results in a high mass transfer performance, less enzyme deactivation by foam formation, and reduced gas consumption. This makes microbubble aerators favorable for application in biocatalysis.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative investigation of fine bubble and macrobubble aeration on gas utility and biotransformation productivity

Thomas

Ohde

Matthes

et al. 2020

Biotech & Bioengineering

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“…umesh is the velocity of mesh between the two fluids, and mf is the mass flux across the phase interface. It should be noted that the interfacial velocity is derived from the mass conservation across the interface (i.e., from one phase to another), and more detailed information could be found in our previous study (Jia et al, 2019) or the relevant description of Jafari and Okutucu (2016).…”

Section: The Interfacial Conditions and The Phase Change Modelmentioning

confidence: 99%

“…Therefore, we aim to propose an accurate and efficient two-phase flow model with phase change in the presence of the NCG in the present study. An Arbitrary Lagrangian Eulerian (ALE) method, allowing for highly accurate hydrodynamic and interfacial mass transfer solution, is adopted as the interface tracking method here, because it has been found to be more efficient than methods of the VOF and the CLSVOF in our previous studies (Jia et al, 2015(Jia et al, , 2019Zhang and Jia, 2016). The phase change model based on the interfacial heat flux is developed and validated with the theoretical solution.…”

Section: Introductionmentioning

confidence: 99%

Investigation of bubble behavior with phase change under the effect of noncondensable gas

Jia

Xiao

Kang

2019

Chemical Engineering Science

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An Arbitrary-Lagrangian-Eulerian based numerical method is proposed to study the phase change bubble under the effect of noncondensable gas (NCG). In order to validate the underlying mathematical model, benchmark tests, including the bubble growth in quiescent superheated liquid and the condensation of rising bubble with NCG, are conducted. The numerical results by the phase change model, in which the mass transfer rate is directly determined by interfacial heat flux, is found to agree fairly well with analytical results, and the calculation of fluid flow and heat transfer by the present numerical approach is reasonable. Moreover, the numerical results of free rising bubble condensation with NCG are found to present good agreement with the experimental data on the evolution of bubble size, and the mass balance of the NCGs is proved to be achieved by the model. Finally, the subcooled boiling with NCG on a biphilic surface is numerically investigated, and the bubble behavior and internal distribution of the NCG are studied in detail. In the presence of NCG, the bubbles can even depart from the walls that are negatively superheated. The bubble keeps the bowl-shape for a long time before necking, which is consistent with the experimental observations. The contact line is found to

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“…The effect of the bubble shape has been addressed by Figueroa-Espinoza and Legendre (2010) solving the Navier-Stokes equations coupled with advection-diffusion equation for Reynolds numbers larger than one for elliptic bubbles. This work has been extended by taking into account the bubble deformation using an arbitrary Lagrangian-Eulerian method by Jia et al (2019) or with a Volume of Fluid method by Panda et al (2020). The mass transfer is also strongly affected by the mobility of the interface between bubble and liquid.…”

Section: Introductionmentioning

confidence: 99%

Mass transfer around a rising bubble in a glass-forming liquid involving oxidation-reduction reaction: Numerical computation of the Sherwood number

Pigeonneau

Pereira

Laplace

2021

Chemical Engineering Science

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The mass transfer of a rising bubble in creeping flow regime is numerically investigated. A reversible oxidation-reduction reaction is taken into account. Two coupled equations are needed to study the oxygen and reduced species transport. Three dimensionless numbers are involved: the Péclet and Damköhler numbers and the ratio of the diffusion coefficient of the reduced species to the diffusion coefficient of oxygen. Numerical computations are applied to a soda-lime-silica and a borosilicate glass-forming liquids. Results are focused on the determination of the Sherwood number. The mass transfer enhances strongly when the chemical reaction is very fast, i.e. at large value of Damköhler number. Correlations to determine the enhancement factor are proposed in the two limits of small and large Péclet numbers. The Sherwood number enhances when the diffusion coefficient of the reduced species increases. A correlation of the Sherwood number is proposed taking into account advection and reaction.

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Investigation of a free rising bubble with mass transfer by an arbitrary Lagrangian–Eulerian method

Cited by 27 publications

References 40 publications

Comparative investigation of fine bubble and macrobubble aeration on gas utility and biotransformation productivity

Comparative investigation of fine bubble and macrobubble aeration on gas utility and biotransformation productivity

Investigation of bubble behavior with phase change under the effect of noncondensable gas

Mass transfer around a rising bubble in a glass-forming liquid involving oxidation-reduction reaction: Numerical computation of the Sherwood number

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