Role of free surface on gas‐induced liquid mixing in a shallow vessel

Quiyoom, Abdul; Buwa, Vivek V.; Ajmani, S. K.

doi:10.1002/aic.15697

Cited by 4 publications

(3 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Gupta et al (2016) used a coupled VOF and pseudotransient method to solve free-surface flow problems, and the numerical solution compared well with analytical or experimental data. Quiyoom et al (2017) simulated the process of gas-induced liquid mixing in a shallow vessel and found that the mixing time predicted by EL + VOF was in good agreement with the measurements.…”

Section: Introductionmentioning

confidence: 56%

A numerical study of tsunami wave impact and run-up on coastal cliffs using a CIP-based model

Zhao

Chen

Huang

et al. 2017

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. There is a general lack of understanding of tsunami wave interaction with complex geographies, especially the process of inundation. Numerical simulations are performed to understand the effects of several factors on tsunami wave impact and run-up in the presence of gentle submarine slopes and coastal cliffs, using an in-house code, a constrained interpolation profile (CIP)-based model. The model employs a high-order finite difference method, the CIP method, as the flow solver; utilizes a VOF-type method, the tangent of hyperbola for interface capturing/slope weighting (THINC/SW) scheme, to capture the free surface; and treats the solid boundary by an immersed boundary method. A series of incident waves are arranged to interact with varying coastal geographies. Numerical results are compared with experimental data and good agreement is obtained. The influences of gentle submarine slope, coastal cliff and incident wave height are discussed. It is found that the tsunami amplification factor varying with incident wave is affected by gradient of cliff slope, and the critical value is about 45 • . The run-up on a toe-erosion cliff is smaller than that on a normal cliff. The run-up is also related to the length of a gentle submarine slope with a critical value of about 2.292 m in the present model for most cases. The impact pressure on the cliff is extremely large and concentrated, and the backflow effect is non-negligible. Results of our work are highly precise and helpful in inverting tsunami source and forecasting disaster.

show abstract

Section: Introductionmentioning

confidence: 56%

A numerical study of tsunami wave impact and run-up on coastal cliffs using a CIP-based model

Zhao

Chen

Huang

et al. 2017

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…Pang et al (2020) presented a T-form microfluidic device with a neck at the junction and evaluate droplet volume under several flow rates. Quiyoom et al (2017) deciphered the free surface effect on liquidphase mixing in shallow vessels. Redapangu et al (2021) analyzed the effect of changing density and viscosity of two immiscible liquids in a 3-D inclined microchannel.…”

Section: Introductionmentioning

confidence: 99%

Design and Simulation of the Spiral Micromixer with Chaotic Advection

2023

JAFM

View full text Add to dashboard Cite

In recent years, the microfluidics technique has screwed up rising attention and be in progress a fascinating topic. Species mixing is a compelling part of any microfluidic system that abides by the major challenge. In this research, a relative explication of mixing quality of microchannels of two cross-sections square and circular in spiral form is presented by numerical simulation. To perform the visitation, geometric parameters like axial length of microchannels and hydraulic diameter are taken equal for both cases. Computational Fluid Dynamics codes unriddle the Continuity equation, Navier-Stokes equation, and Convection-Diffusion equation. Explication of fluid flow and mixing have been gone through with an extensive limit of Reynolds numbers 1 to 125. The results explicate that the circular section spiral microchannel affords a higher mixing quality admixed to the square section spiral microchannel. Furthermore, in the circumstance of circular section spiral micromixer, mixing index esteem has attained 92% at Re =125. For both section micromixer, the esteem of mixing index enhancement be contingent on Reynolds numbers. For both cases, pressure downfall has been computed for microchannels of similar lengths. The esteem of pressure downfall in square section spiral mixer is excess than circular section spiral mixer. The simulation outcomes exhibited that the circular section spiral micromixer is an effective design for microfluidic devices like Lab on a chip (LOC).

show abstract

“…Further, in most of the studies, single‐point measurements were performed to measure the mixing time in the vessel with the assumption of symmetric mixing. Recently, Quiyoom et al 20 performed mixing time measurements with multiple conductivity probes simultaneously in a 1:6 scaled‐down cold‐flow model of the BOF vessel and showed asymmetric mixing behavior in the vessel, that is, the local mixing time varied considerably from one location to other location. Therefore, to understand the reasons for asymmetric flow and mixing behavior quantitatively, whole‐field measurements (PIV and planar laser‐induced fluorescence [PLIF]) are required.…”

Section: Introductionmentioning

confidence: 99%

PIV and PLIF measurements of interacting bubble plumes and their role in liquid‐phase mixing in a shallow vessel

2022

Self Cite

View full text Add to dashboard Cite

Gas-induced liquid-phase mixing in shallow vessels is important to primary and secondary steel-refining processes and governs the quality of the steel. In the present work, we have investigated the dynamics of meandering bubble plumes and their role in liquid-phase mixing in shallow vessel that corresponds to 1:6 scaled-down model of ladle used in the secondary steel-refining process. The effects of multiple meandering bubble plumes and their interactions on the liquid-phase velocity distribution, recirculatory flow, plume oscillation frequencies, and turbulent kinetic energy are analyzed for different bottom injection configurations using particle image velocimetry measurements. The role of meandering bubble plumes and their interactions in the liquid-phase mixing is analyzed using planar laser-induced fluorescence measurements. ~60% reduction in the mixing time was found with differential flow scheme. Present findings help to understand the contributions of differential flow and bubble plumes interactions to liquid-phase mixing in shallow vessels.

show abstract

Role of free surface on gas‐induced liquid mixing in a shallow vessel

Cited by 4 publications

References 33 publications

A numerical study of tsunami wave impact and run-up on coastal cliffs using a CIP-based model

A numerical study of tsunami wave impact and run-up on coastal cliffs using a CIP-based model

Design and Simulation of the Spiral Micromixer with Chaotic Advection

PIV and PLIF measurements of interacting bubble plumes and their role in liquid‐phase mixing in a shallow vessel

Contact Info

Product

Resources

About