Due to recent bot attacks, newly registered users are required to send a message via our contact form in order to be able to post in the forum. OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › define 2d geometry from binary file › Reply To: define 2d geometry from binary file February 3, 2021 at 7:05 pm #5470 mathiasKeymaster You are right, I meant the vtiReader!