3.2. f and TPF factors
The f factors reported by preset study are the dimensionless
pressured drops evaluated as Fanning pressure drop coefficients
(f). The main focus to detect these pressure drops through present
two-pass ribbed channels with wavy sidewalls is to comparatively
examine the additional pumping power required for gaining the
additional HTE benefits generated by the wavy sidewalls. Referring
to the pressure-tap locations selected for measuring the pressure
drops as indicated in Fig. 1, the f factors detected by present study