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Related Experiment Videos

Consistent lattice Boltzmann method.

Santosh Ansumali1, Iliya V Karlin

  • 1School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore. asantosh@ntu.edu.sg

Physical Review Letters
|February 21, 2006
PubMed
Summary
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A new energy-conserving lattice Boltzmann model resolves issues with bulk viscosity. This computational fluid dynamics tool accurately approximates the Boltzmann equation for microflows and weakly compressible flows.

Area of Science:

  • Computational fluid dynamics
  • Kinetic theory

Background:

  • Lattice Boltzmann models often lack energy conservation, leading to inaccurate bulk viscosity.
  • This limitation restricts the lattice Boltzmann method's applicability as a fluid model.

Purpose of the Study:

  • To develop a novel lattice Boltzmann model that incorporates energy conservation.
  • To validate the model's accuracy for simulating fluid dynamics.

Main Methods:

  • Derivation of a new lattice Boltzmann model from Boltzmann's kinetic theory.
  • Incorporation of energy conservation principles into the model.
  • Computational simulations to test the model's performance.

Main Results:

  • The novel lattice Boltzmann model demonstrates energy conservation.

Related Experiment Videos

  • Simulations show the model accurately approximates the Boltzmann equation.
  • The model is effective for weakly compressible flows and microflows.

    • Conclusions:

    • The developed lattice Boltzmann model overcomes previous limitations.
    • This energy-conserving model offers a more realistic approach to fluid simulation.
    • It enhances the utility of lattice Boltzmann methods in computational fluid dynamics.