Multiscale lattice Boltzmann approach to modeling gas flows

Details Multiscale lattice Boltzmann approach to modeling gas flows Multiscale lattice Boltzmann approach to modeling gas flows

2010-07-28

arxiv.org/abs/1007.4895v1

Physics

Fluid Dynamics

Scientific paper

For multiscale gas flows, kinetic-continuum hybrid method is usually used to balance the computational accuracy and efficiency. However, the kinetic-continuum coupling is not straightforward since the coupled methods are based on different theoretical frameworks. In particular, it is not easy to recover the non-equilibrium information required by the kinetic method which is lost by the continuum model at the coupling interface. Therefore, we present a multiscale lattice Boltzmann (LB) method which deploys high-order LB models in highly rarefied flow regions and low-order ones in less rarefied regions. Since this multiscale approach is based on the same theoretical framework, the coupling precess becomes simple. The non-equilibrium information will not be lost at the interface as low-order LB models can also retain this information. The simulation results confirm that the present method can achieve model accuracy with reduced computational cost.

Affiliated with

Also associated with

No associations

Rating

Multiscale lattice Boltzmann approach to modeling gas flows does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Multiscale lattice Boltzmann approach to modeling gas flows, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiscale lattice Boltzmann approach to modeling gas flows will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-73658