OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › heatmap throw an error › Reply To: heatmap throw an error May 22, 2020 at 3:04 pm #4975 mathiasKeymaster Dear Sergey, your simolaton has diverged (avRho=NaN and uMax is quite high). That is the reason for the error. The heatmapWriter seems fine! Best Mathias