Da. Paterson, PREDICTING RMS PRESSURES FROM COMPUTED VELOCITIES AND MEAN PRESSURES, Journal of wind engineering and industrial aerodynamics, 46-7, 1993, pp. 431-437
There is a need to calculate root mean square (r.m.s.) pressures from
the output of steady-state computer programs. We know much less about
calculating r.m.s. pressures than about calculating r.m.s. velocities.
R.m.s. pressures can be quickly estimated from calculated mean pressu
res, mean velocities and r.m.s. velocities using the equations in this
paper. The equations have been used in Wind Engineering but can be ap
plied in any turbulent flow where pressures are required.