OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › Assigning Material Number For A Particle › Reply To: Assigning Material Number For A Particle January 23, 2023 at 7:26 pm #7137 Henderson_CParticipant Hello Dr. Mathias, Is this achievable by modifying the header files (i.e., particleTasks.h) or the main code? Please elaborate on your hypothesis. My Master’s Thesis is related to such a topic, so I find your replies very helpful. Sincerely,