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Welcome to NekLBM

NekLBM is a high-order lattice Boltzmann fluid solver based on spectral element discontinuous Galerkin methods. It is an open-source code written in Fortran and C. The code is actively developed at Mathematics and Computer Science Division of Argonne National Laboratory.

Current Developers

Misun Min [1], Taehun Lee [2], Saumil Patel, Kalu Uga


  • Lattice Boltzmann approach for collision step
  • Spectral element discontinuous Galerkin discretization for advection step
  • Advection-diffusion solver for heat transfer
  • Hexahedral body conforming meshes
  • The 4th-order Runge-Kutta timestepping
  • The high-order exponential time integration
  • Flows past a cylinder and cylinders in tandum
  • Flows past a hemisphere
  • Turbulent channel flows
  • Natural convections in a square and an annulus
  • high parallel efficiency scaling over 100,000 cores
  • parallel IO scaling over 65,000 cores

Consult the User's Guide for information on using the wiki software: Configuration settings list, MediaWiki FAQ, MediaWiki release mailing list