Articles producció científica> Enginyeria Mecànica

Passive scalar transfer rate at bubble interface in Carreau liquid in a transition regime

  • Identification data

    Identifier: imarina:9246580
  • Authors:

    Kazemi K
    Vernet A
    Grau FX
    Cito S
    Fabregat A
  • Others:

    Author, as appears in the article.: Kazemi K; Vernet A; Grau FX; Cito S; Fabregat A
    Department: Enginyeria Mecànica
    URV's Author/s: Cito, Salvatore / Fabregat Tomàs, Alexandre / Grau Vidal, Francesc Xavier / Kazemi, Koorosh / Vernet Peña, Antonio
    Keywords: Shear thinning fluid Shear thickening fluid Newtonian fluid Mass-transfer Mass transfer Bubble rising single bubble shear thinning fluid shear thickening fluid power-law numerical-simulation newtonian fluid motion mass transfer heat fluid sphere
    Abstract: The scalar transfer rate from a bubble to a quiescent fluid with Carreau rheological behavior is studied here with Bond and Galilei number values respectively equal to 30 and 2 and a non-dimensional inelastic time constant (λ) equal to 6. Under these conditions the bubble dynamics regime stays within the steady and oscillatory areas. Navier Stokes equations are solved numerically in a non-stationary three dimensional domain and are coupled to the mass transfer equation of a scalar. The effect of the Peclet number (Pe) and flow index (n) of the quiescent fluid on the Sherwood number is explored within the following range: 10<Pe<1000, and 0.3<n<1.7. We observed that the shear thinning rheology destabilizes the bubble flow dynamics from steady towards an oscillatory regime and increases transfer rates between the bubble and surrounding fluids. This trend became even more prominent as Pe increased. Our results are condensed into an empirical predictive correlation that outperforms previous similar correlations and can be used to estimate the heat and mass transfer rate at the bubble interface in a Carreau liquid in a transition regime at a specific Galilei and Bond numbers.
    Thematic Areas: Physics and astronomy (miscellaneous) Physics and astronomy (all) Mechanics Mechanical engineering Matemática / probabilidade e estatística General physics and astronomy Fluid flow and transfer processes Engenharias iv Engenharias iii Engenharias ii Ciência de alimentos Ciência da computação Biodiversidade
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: koorosh.kazemi@urv.cat koorosh.kazemi@urv.cat salvatore.cito@urv.cat alexandre.fabregat@urv.cat anton.vernet@urv.cat francescxavier.grau@urv.cat
    Author identifier: 0000-0001-7626-3374 0000-0002-6032-2605 0000-0002-7028-1368 0000-0002-4077-7338
    Record's date: 2024-09-07
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/pii/S0301932222000258
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: International Journal Of Multiphase Flow. 150
    APA: Kazemi K; Vernet A; Grau FX; Cito S; Fabregat A (2022). Passive scalar transfer rate at bubble interface in Carreau liquid in a transition regime. International Journal Of Multiphase Flow, 150(), -. DOI: 10.1016/j.ijmultiphaseflow.2022.104000
    Article's DOI: 10.1016/j.ijmultiphaseflow.2022.104000
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2022
    Publication Type: Journal Publications
  • Keywords:

    Fluid Flow and Transfer Processes,Mechanical Engineering,Mechanics,Physics and Astronomy (Miscellaneous)
    Shear thinning fluid
    Shear thickening fluid
    Newtonian fluid
    Mass-transfer
    Mass transfer
    Bubble rising
    single bubble
    shear thinning fluid
    shear thickening fluid
    power-law
    numerical-simulation
    newtonian fluid
    motion
    mass transfer
    heat
    fluid sphere
    Physics and astronomy (miscellaneous)
    Physics and astronomy (all)
    Mechanics
    Mechanical engineering
    Matemática / probabilidade e estatística
    General physics and astronomy
    Fluid flow and transfer processes
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Ciência de alimentos
    Ciência da computação
    Biodiversidade
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