Reference / Input deck / model / boundary conditions / farfield / target / alpha / advanced
advanced
Tuning of how the angle is stepped and how the coefficient is measured. Unset, every setting takes its default.
max step
float·not set by default·> 0 and <= 6
Largest change of the angle of attack in one step, in degrees, up to 6: a larger jump can make the flow solve diverge. Unset, it is 4.
relaxation
float·not set by default·> 0 and <= 2
Fraction of the computed step that is taken, up to 2. Unset, it is 1.
average over
int·not set by default·>= 1
Number of report rows averaged into each measurement of the coefficient. Unset, it is 10.
max wait
int·not set by default·> 0
Cycles to wait after a step for the coefficient to settle, after which the next step is taken regardless. Unset, it is 1500.
slope
float·not set by default
First guess of the change of the coefficient per degree of angle of attack. Unset, it is 0.11 for CL, the thin-aerofoil slope of 2π per radian; for CD a first step of half the max step is taken instead.