Enhancing stability of lattice-Boltzmann simulations via new boundary conditions

Lorenzo De la Fuente; David Ingram; Clive Mingham; Derek Causons; Xiao Yi He

doi:10.1142/S0129183103004176

Enhancing stability of lattice-Boltzmann simulations via new boundary conditions

Lorenzo De la Fuente^*, David Ingram, Clive Mingham, Derek Causons, Xiao Yi He

^*Corresponding author for this work

School of Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

A new boundary condition is developed to enhance numerical stability for moving walls in lattice-Boltzmann simulations. It includes a population "adjustment" procedure at boundaries which allows stable simulations closer to the theoretical limit of τ = 0.5. Couette and lid-driven cavity flow simulations show improved velocity profiles, lower stable relaxation timestep τ and higher Reynolds number He limits. The new method needs fewer timesteps to achieve steady-state.

Original language	English
Pages (from-to)	29-40
Number of pages	12
Journal	International Journal of Modern Physics C
Volume	14
Issue number	1
DOIs	https://doi.org/10.1142/S0129183103004176
Publication status	Published - 1 Jan 2003

Keywords / Materials (for Non-textual outputs)

Boundary conditions
Couette flow
Lattice-Boltzmann
Lid-driven cavity flow
Urban canyon

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10.1142/S0129183103004176

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abstract = "A new boundary condition is developed to enhance numerical stability for moving walls in lattice-Boltzmann simulations. It includes a population {"}adjustment{"} procedure at boundaries which allows stable simulations closer to the theoretical limit of τ = 0.5. Couette and lid-driven cavity flow simulations show improved velocity profiles, lower stable relaxation timestep τ and higher Reynolds number He limits. The new method needs fewer timesteps to achieve steady-state.",

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author = "{De la Fuente}, Lorenzo and David Ingram and Clive Mingham and Derek Causons and He, {Xiao Yi}",

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AU - Ingram, David

AU - Mingham, Clive

AU - Causons, Derek

AU - He, Xiao Yi

PY - 2003/1/1

Y1 - 2003/1/1

N2 - A new boundary condition is developed to enhance numerical stability for moving walls in lattice-Boltzmann simulations. It includes a population "adjustment" procedure at boundaries which allows stable simulations closer to the theoretical limit of τ = 0.5. Couette and lid-driven cavity flow simulations show improved velocity profiles, lower stable relaxation timestep τ and higher Reynolds number He limits. The new method needs fewer timesteps to achieve steady-state.

AB - A new boundary condition is developed to enhance numerical stability for moving walls in lattice-Boltzmann simulations. It includes a population "adjustment" procedure at boundaries which allows stable simulations closer to the theoretical limit of τ = 0.5. Couette and lid-driven cavity flow simulations show improved velocity profiles, lower stable relaxation timestep τ and higher Reynolds number He limits. The new method needs fewer timesteps to achieve steady-state.

KW - Boundary conditions

KW - Couette flow

KW - Lattice-Boltzmann

KW - Lid-driven cavity flow

KW - Urban canyon

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ER -

Enhancing stability of lattice-Boltzmann simulations via new boundary conditions

Abstract

Keywords / Materials (for Non-textual outputs)

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