Hello Karthik,

Thank you for your answer!

This has happened twice to me and I wouldn't like to launch a third simulation without knowing what it's going on.

Apparently it only occurs with the shear stresses and skin friction coefficient because I have unsteady wall statistics (wall fluxes) for the rest of variables (Pressure coefficient, surface heat flux, surface Stanton number, surface Nusselt number etc). I am using ANSYS Fluent 2019 R3.

Kind regards,