New version of OpenLB was released. Download here OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › Method to generate effective relaxation time as output in VTK › Reply To: Method to generate effective relaxation time as output in VTK February 6, 2025 at 3:59 am #9859 mwkimParticipant Yes, I already add #define DISABLE_CSE at the very first line in the cpp file.