New to LBM and OpenLB? Attend our upcoming one-week hands-on Spring School in Marseille/France from 19.05.2025 – 23.05.2025. OpenLB – Open Source Lattice Boltzmann Code › Forums › on Lattice Boltzmann Methods › General Topics › refined grid with periodic boundary › Re: refined grid with periodic boundary November 10, 2018 at 11:09 am #2958 mathiasKeymaster Dear mfduqued, That is the OpenLB forum. Palabos question I cannot answer! Best Mathias