Direct numerical simulation of fluid flow and dependently coupled heat and mass transfer in fluid-particle systems

Jiangtao Lu, E.A.J.F. Peters (Corresponding author), J.A.M. Kuipers

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Uittreksel

In this paper, an efficient ghost-cell based immersed boundary method (IBM) is used to perform direct numerical simulation (DNS) of reactive fluid-particle systems. With an exothermic first order reaction proceeding at the exterior particle surface, the solid temperature rises and consequently increases the reaction rate via an Arrhenius temperature dependence. In other words, the heat and mass transport is dependently coupled through the particle thermal energy equation and the Arrhenius equation, and they offer dynamic boundary conditions for the fluid phase thermal energy equation and species equation respectively. The fluid-solid coupling is enforced at the exact position of the particle surface by implicit incorporation of the boundary conditions into the discretized momentum, species and thermal energy conservation equations of the fluid phase. Different fluid-particle systems are studied with increasing complexity: a single sphere, three spheres and a dense array consisting of hundreds of randomly generated particles. In these systems the mutual impacts between heat and mass transport processes are investigated.

TaalEngels
Pagina's203-219
Aantal pagina's17
TijdschriftChemical Engineering Science
Volume204
DOI's
StatusGepubliceerd - 31 aug 2019

Vingerafdruk

Direct numerical simulation
Flow of fluids
Mass transfer
Heat transfer
Thermal energy
Fluids
Boundary conditions
Reaction rates
Momentum
Energy conservation
Temperature
Hot Temperature

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    Citeer dit

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    title = "Direct numerical simulation of fluid flow and dependently coupled heat and mass transfer in fluid-particle systems",
    abstract = "In this paper, an efficient ghost-cell based immersed boundary method (IBM) is used to perform direct numerical simulation (DNS) of reactive fluid-particle systems. With an exothermic first order reaction proceeding at the exterior particle surface, the solid temperature rises and consequently increases the reaction rate via an Arrhenius temperature dependence. In other words, the heat and mass transport is dependently coupled through the particle thermal energy equation and the Arrhenius equation, and they offer dynamic boundary conditions for the fluid phase thermal energy equation and species equation respectively. The fluid-solid coupling is enforced at the exact position of the particle surface by implicit incorporation of the boundary conditions into the discretized momentum, species and thermal energy conservation equations of the fluid phase. Different fluid-particle systems are studied with increasing complexity: a single sphere, three spheres and a dense array consisting of hundreds of randomly generated particles. In these systems the mutual impacts between heat and mass transport processes are investigated.",
    keywords = "Immersed boundary method, Gas-solid system, Surface reaction, Coupled heat and mass transfer, Damk{\"o}hler number, Arrhenius equation",
    author = "Jiangtao Lu and E.A.J.F. Peters and J.A.M. Kuipers",
    year = "2019",
    month = "8",
    day = "31",
    doi = "10.1016/j.ces.2019.02.043",
    language = "English",
    volume = "204",
    pages = "203--219",
    journal = "Chemical Engineering Science",
    issn = "0009-2509",
    publisher = "Elsevier",

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    TY - JOUR

    T1 - Direct numerical simulation of fluid flow and dependently coupled heat and mass transfer in fluid-particle systems

    AU - Lu,Jiangtao

    AU - Peters,E.A.J.F.

    AU - Kuipers,J.A.M.

    PY - 2019/8/31

    Y1 - 2019/8/31

    N2 - In this paper, an efficient ghost-cell based immersed boundary method (IBM) is used to perform direct numerical simulation (DNS) of reactive fluid-particle systems. With an exothermic first order reaction proceeding at the exterior particle surface, the solid temperature rises and consequently increases the reaction rate via an Arrhenius temperature dependence. In other words, the heat and mass transport is dependently coupled through the particle thermal energy equation and the Arrhenius equation, and they offer dynamic boundary conditions for the fluid phase thermal energy equation and species equation respectively. The fluid-solid coupling is enforced at the exact position of the particle surface by implicit incorporation of the boundary conditions into the discretized momentum, species and thermal energy conservation equations of the fluid phase. Different fluid-particle systems are studied with increasing complexity: a single sphere, three spheres and a dense array consisting of hundreds of randomly generated particles. In these systems the mutual impacts between heat and mass transport processes are investigated.

    AB - In this paper, an efficient ghost-cell based immersed boundary method (IBM) is used to perform direct numerical simulation (DNS) of reactive fluid-particle systems. With an exothermic first order reaction proceeding at the exterior particle surface, the solid temperature rises and consequently increases the reaction rate via an Arrhenius temperature dependence. In other words, the heat and mass transport is dependently coupled through the particle thermal energy equation and the Arrhenius equation, and they offer dynamic boundary conditions for the fluid phase thermal energy equation and species equation respectively. The fluid-solid coupling is enforced at the exact position of the particle surface by implicit incorporation of the boundary conditions into the discretized momentum, species and thermal energy conservation equations of the fluid phase. Different fluid-particle systems are studied with increasing complexity: a single sphere, three spheres and a dense array consisting of hundreds of randomly generated particles. In these systems the mutual impacts between heat and mass transport processes are investigated.

    KW - Immersed boundary method

    KW - Gas-solid system

    KW - Surface reaction

    KW - Coupled heat and mass transfer

    KW - Damköhler number

    KW - Arrhenius equation

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    U2 - 10.1016/j.ces.2019.02.043

    DO - 10.1016/j.ces.2019.02.043

    M3 - Article

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    JO - Chemical Engineering Science

    T2 - Chemical Engineering Science

    JF - Chemical Engineering Science

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