“…Over the years, several authors have used different methodologies to predict the drag coefficient and terminal velocity in agricultural products (Andalib, Zhu, & Nakhla, 2010;Brown & Lawler, 2003;Cheng, 2009;Chhabra, Agarwal, & Sinha, 1999;Christiansen & Barker, 1965;Hartman, Trnka, & Svoboda, 1994;Tang, Chan, & Raper, 2004;Tran-Cong, 2004). To obtain these parameters, an adjustment by trial and error is necessary, since the terminal velocity is present both in the drag coefficient and in the Reynolds number and this relationship is not linear (Couto, Santos, Vieira, & Silva, 2004). The semi-empirical models used to predict aerodynamic properties, consider the particles as perfect spheroids, which in general causes significant errors in the modeling process (Chhabra et al, 1999).…”