The Bhatnagar–Gross–Krook operator (abbreviated BGK operator) term refers to a collision operator used in the Boltzmann Equation and in the Lattice Boltzmann method, a Computational fluid dynamics technique. It is given by the following formula:
where is a local equilibrium value for the population of particles in the direction of link The term is a relaxation time, and related to the viscosity.
- S. Succi (2001). The Lattice Boltzmann Equation for Fluid Dynamics and Beyond. Oxford University Press. ISBN 978-0-19-850398-9.
|This fluid dynamics–related article is a stub. You can help Wikipedia by expanding it.|