Een verbeterde Front-Tracking techniek voor de simulatie van massa overdracht in dichte bellenstromen

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

11 Citaties (Scopus)

Uittreksel

Direct numerical simulation results of mass transfer in dense bubble swarms using a Front-Tracking (FT) model will be presented, where the effect of the gas hold-up has been investigated. The FT method is particularly suited for bubble swarm simulations, since bubbles do not coalesce artificially, but traditional FT techniques often suffer from artificial volume loss of the bubbles. For this reason, a specialized remeshing technique is presented to counteract any occurring volume defects, while keeping all physical undulations on the bubble surfaces unharmed.

For the simulation of gas-to-liquid mass transfer, a species transport equation (convection–diffusion–reaction) was coupled to the FT hydrodynamics solver, which was solved on a superimposed refined mesh for higher accuracy. The velocity components have been interpolated to the refined grid using a higher-order solenoidal method. Enforcement of the Dirichlet condition for the concentration at the gas–liquid interface is achieved with an immersed boundary method, enabling the description of gas to liquid mass transfer. Careful validation of the newly implemented model shows satisfactory results.

The liquid side mass transfer coefficient in dense bubble swarms, with gas fractions between 4% and 40%, has been investigated using the new model. The simulations have been performed in a 3D domain with periodic boundaries, mimicking an infinite swarm of bubbles. The results indicate that the liquid-side mass transfer coefficient rises only slightly with increasing gas fraction.
Vertaalde titel van de bijdrageEen verbeterde Front-Tracking techniek voor de simulatie van massa overdracht in dichte bellenstromen
TaalEngels
Pagina's351-369
Aantal pagina's19
TijdschriftChemical Engineering Science
Volume152
DOI's
StatusGepubliceerd - 2 okt 2016

Vingerafdruk

Bubbly Flow
Front Tracking
Mass Transfer
Bubble
Mass transfer
Gases
Swarm
Liquid
Liquids
Simulation
Bubbles (in fluids)
Immersed Boundary Method
Direct numerical simulation
Remeshing
Dirichlet conditions
Convection-diffusion
High-order Methods
Coefficient
Transport Equation
Hydrodynamics

Trefwoorden

    Citeer dit

    @article{d97333ec4bf84e9aa0c573136aa0ac14,
    title = "An improved Front-Tracking technique for the simulation of mass transfer in dense bubbly flows",
    abstract = "Direct numerical simulation results of mass transfer in dense bubble swarms using a Front-Tracking (FT) model will be presented, where the effect of the gas hold-up has been investigated. The FT method is particularly suited for bubble swarm simulations, since bubbles do not coalesce artificially, but traditional FT techniques often suffer from artificial volume loss of the bubbles. For this reason, a specialized remeshing technique is presented to counteract any occurring volume defects, while keeping all physical undulations on the bubble surfaces unharmed.For the simulation of gas-to-liquid mass transfer, a species transport equation (convection–diffusion–reaction) was coupled to the FT hydrodynamics solver, which was solved on a superimposed refined mesh for higher accuracy. The velocity components have been interpolated to the refined grid using a higher-order solenoidal method. Enforcement of the Dirichlet condition for the concentration at the gas–liquid interface is achieved with an immersed boundary method, enabling the description of gas to liquid mass transfer. Careful validation of the newly implemented model shows satisfactory results.The liquid side mass transfer coefficient in dense bubble swarms, with gas fractions between 4{\%} and 40{\%}, has been investigated using the new model. The simulations have been performed in a 3D domain with periodic boundaries, mimicking an infinite swarm of bubbles. The results indicate that the liquid-side mass transfer coefficient rises only slightly with increasing gas fraction.",
    keywords = "Bubble swarms, Bubbly flows, Front tracking, Mass transfer, Numerical modeling",
    author = "I. Roghair and {van Sint Annaland}, M. and J.A.M. Kuipers",
    year = "2016",
    month = "10",
    day = "2",
    doi = "10.1016/j.ces.2016.06.026",
    language = "English",
    volume = "152",
    pages = "351--369",
    journal = "Chemical Engineering Science",
    issn = "0009-2509",
    publisher = "Elsevier",

    }

    An improved Front-Tracking technique for the simulation of mass transfer in dense bubbly flows. / Roghair, I.; van Sint Annaland, M.; Kuipers, J.A.M.

    In: Chemical Engineering Science, Vol. 152, 02.10.2016, blz. 351-369.

    Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

    TY - JOUR

    T1 - An improved Front-Tracking technique for the simulation of mass transfer in dense bubbly flows

    AU - Roghair,I.

    AU - van Sint Annaland,M.

    AU - Kuipers,J.A.M.

    PY - 2016/10/2

    Y1 - 2016/10/2

    N2 - Direct numerical simulation results of mass transfer in dense bubble swarms using a Front-Tracking (FT) model will be presented, where the effect of the gas hold-up has been investigated. The FT method is particularly suited for bubble swarm simulations, since bubbles do not coalesce artificially, but traditional FT techniques often suffer from artificial volume loss of the bubbles. For this reason, a specialized remeshing technique is presented to counteract any occurring volume defects, while keeping all physical undulations on the bubble surfaces unharmed.For the simulation of gas-to-liquid mass transfer, a species transport equation (convection–diffusion–reaction) was coupled to the FT hydrodynamics solver, which was solved on a superimposed refined mesh for higher accuracy. The velocity components have been interpolated to the refined grid using a higher-order solenoidal method. Enforcement of the Dirichlet condition for the concentration at the gas–liquid interface is achieved with an immersed boundary method, enabling the description of gas to liquid mass transfer. Careful validation of the newly implemented model shows satisfactory results.The liquid side mass transfer coefficient in dense bubble swarms, with gas fractions between 4% and 40%, has been investigated using the new model. The simulations have been performed in a 3D domain with periodic boundaries, mimicking an infinite swarm of bubbles. The results indicate that the liquid-side mass transfer coefficient rises only slightly with increasing gas fraction.

    AB - Direct numerical simulation results of mass transfer in dense bubble swarms using a Front-Tracking (FT) model will be presented, where the effect of the gas hold-up has been investigated. The FT method is particularly suited for bubble swarm simulations, since bubbles do not coalesce artificially, but traditional FT techniques often suffer from artificial volume loss of the bubbles. For this reason, a specialized remeshing technique is presented to counteract any occurring volume defects, while keeping all physical undulations on the bubble surfaces unharmed.For the simulation of gas-to-liquid mass transfer, a species transport equation (convection–diffusion–reaction) was coupled to the FT hydrodynamics solver, which was solved on a superimposed refined mesh for higher accuracy. The velocity components have been interpolated to the refined grid using a higher-order solenoidal method. Enforcement of the Dirichlet condition for the concentration at the gas–liquid interface is achieved with an immersed boundary method, enabling the description of gas to liquid mass transfer. Careful validation of the newly implemented model shows satisfactory results.The liquid side mass transfer coefficient in dense bubble swarms, with gas fractions between 4% and 40%, has been investigated using the new model. The simulations have been performed in a 3D domain with periodic boundaries, mimicking an infinite swarm of bubbles. The results indicate that the liquid-side mass transfer coefficient rises only slightly with increasing gas fraction.

    KW - Bubble swarms

    KW - Bubbly flows

    KW - Front tracking

    KW - Mass transfer

    KW - Numerical modeling

    UR - http://www.scopus.com/inward/record.url?scp=84976287682&partnerID=8YFLogxK

    U2 - 10.1016/j.ces.2016.06.026

    DO - 10.1016/j.ces.2016.06.026

    M3 - Article

    VL - 152

    SP - 351

    EP - 369

    JO - Chemical Engineering Science

    T2 - Chemical Engineering Science

    JF - Chemical Engineering Science

    SN - 0009-2509

    ER -