Experimental analysis of density fingering instability modified by precipitation

Binda, L.; Hasi, C. El; Zalts, Anita; D’Onofrio, A.

doi:10.1063/1.4983670

Cited by 9 publications

(6 citation statements)

References 43 publications

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“…Similarly to viscous fingering, buoyancy effects can also be coupled to changes in permeability via dissolution of the porous matrix or precipitation (J. Ennis-King & Paterson (2007), Ritchie & Pritchard (2011), Hidalgo et al (2015), Binda et al (2017), Thomas et al (2019)). Interestingly, reactions are also able to destabilize the otherwise stable case of a species dissolving in a host phase and decreasing its density.…”

Section: Influence Of a + B → C Reactions On Convective Dissolutionmentioning

confidence: 99%

Chemo-Hydrodynamic Patterns and Instabilities

Wit

2020

Annu. Rev. Fluid Mech.

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By modifying a physical property of a solution like its density or viscosity, chemical reactions can modify and even trigger convective flows. These flows in turn affect the spatiotemporal distribution of the chemical species. A nontrivial coupling between reactions and flows then occurs. We present simple model systems of this chemo-hydrodynamic coupling. In particular, we illustrate the possibility of chemical reactions controlling or triggering viscous fingering, Rayleigh–Taylor, double-diffusive, and convective dissolution instabilities. We discuss laboratory experiments performed to study these phenomena and compare the experimental results to theoretical predictions. In each case we contrast the chemo-hydrodynamic patterns and instabilities with those that develop in nonreactive systems and unify the different dynamics in terms of the common features of the related spatial mobility profiles.

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Section: Influence Of a + B → C Reactions On Convective Dissolutionmentioning

confidence: 99%

Chemo-Hydrodynamic Patterns and Instabilities

Wit

2020

Annu. Rev. Fluid Mech.

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“…Los valores de los D están directamente relacionados con la comprensión de la dinámica de los procesos de reacción-difusión. Los mismos se encuentran involucrados, por ejemplo, en la disolución de gases en soluciones acuosas Binda et al, 2017;Binda et al, 218;, entre otros, o de diversos solutos de gran masa molecular en distintos solventes: indicadores de pH o soluciones poliméricas (Freytes et al, 2001;García Casado et al, 2007), y cómo éstos afectan el transporte de fluidos bajo diferentes condiciones de flujo: cambios de concentración, temperatura, propiedades del medio, etc. García Casado et al, 2007;Macias et al, 2007).…”

Section: _1: Importancia Del Valor Del Coeficiente De Difusiónunclassified

Lateral movements in Rayleigh–Taylor instabilities due to frontiers. Experimental study

Binda

Fernández

Hasi

et al. 2018

Chaos: An Interdisciplinary Journal of Nonlinear Science

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Lateral movements of the fingers in Rayleigh-Taylor hydrodynamic instabilities at the interface between two fluids are studied. We show that transverse movements appear when a physical boundary is present; these phenomena have not been explained until now. The boundary prevents one of the fluids from crossing it. Such frontiers can be buoyancy driven as, for example, the frontier to the passage of a less dense solution through a denser solution or when different aggregation states coexist (liquid and gaseous phases). An experimental study of the lateral movement velocity of the fingers was performed for different Rayleigh numbers (Ra), and when oscillations were detected, their amplitudes were studied. Liquid-liquid (L-L) and gas-liquid (G-L) systems were analysed. Aqueous HCl and Bromocresol Green (sodium salt, NaBCG) solutions were used in L-L experiments, and CO (gas) and aqueous NaOH, NaHCO, and CaCl solutions were employed for the G-L studies. We observed that the lateral movement of the fingers and finger collapses near the interface are more notorious when Ra increases. The consequences of this, for each experience, are a decrease in the number of fingers and an increase in the velocity of the lateral finger movement close to the interface as time evolves. We found that the amplitude of the oscillations did not vary significantly within the considered Ra range. These results have an important implication when determining the wave number of instabilities in an evolving system. The wave number could be strongly diminished if there is a boundary.

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“…In particular, convective dissolution of CO 2 upon its transfer to a host phase in carbon capture and sequestration (CCS) techniques has been the subject of both theoretical [16][17][18][19][20][21][22][23][24] and experimental [6][7][8][25][26][27][28] works. This convection can be affected by reactions [4][5][6]14,15,[29][30][31][32][33][34][35], pressure [27], salinity [8,36], boundary conditions [37], and presence of impurities [38,39].…”

Section: Introductionmentioning

confidence: 99%

Effect of variable solubility on reactive dissolution in partially miscible systems

Kabbadj,

Rongy,

De Wit

2023

Phys. Rev. E

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When two partially miscible systems are put in contact, one phase, A, can dissolve into the other one with a given solubility. Chemical reactions in the host phase can impact this dissolution by consuming A and by generating products that impact the solubility of A. Here, we study theoretically the optimal conditions for transfer of a reactant A in a host phase containing a species B when a bimolecular A + B → C reaction generates a product C that linearly decreases the solubility of A. We have quantified numerically the influence of this variable solubility on the reaction-diffusion (RD) concentration profiles of all species in the host phase, on the temporal evolution of the position of the reaction front, and on the flux of A through the interface. We have also computed the analytical asymptotic concentration profiles, solutions at long times of the RD governing equations. For a fixed negative effect of C on the solubility of A, an increase in the initial concentration of reactant B or an increase in the diffusion rate of species B and C results in a larger flux of A and hence a larger amount of A dissolved in the host solution at a given time. However, when the influence of C on the solubility increases, the mass transfer decreases. Our results help understand to what extent a chemical reaction can optimize the reactive transfer of a solute to a host phase with application to, among other things, the geological sequestration of carbon dioxide in an aquifer.

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Experimental analysis of density fingering instability modified by precipitation

Cited by 9 publications

References 43 publications

Chemo-Hydrodynamic Patterns and Instabilities

Chemo-Hydrodynamic Patterns and Instabilities

Lateral movements in Rayleigh–Taylor instabilities due to frontiers. Experimental study

Effect of variable solubility on reactive dissolution in partially miscible systems

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