By default residuals are not accesible in Contours, but they can be added by using a TUI option. For Pressure-Based solver the command is: /solve/set/expert yes , , to activate the option “Save cell residuals for post-processing?”. Then number of , needed will depends on options activated of not. For Density-Based solver the command is: /solve/set/advanced/retain-cell-residuals yes Then you can find the different residuals under Contours of Residuals…