“…In all cases the Beverloo scaling with the 3/2 power of the orifice size has been confirmed. The Beverloo exponent remains the same for polydisperse systems (Zhou et al, 2015;Madrid et al, 2017;Reddy et al, 2021;Anyam and Anki Reddy, 2022) and even for non-circular particles (Liu et al, 2014;Goldberg et al, 2015;Börzsönyi et al, 2016;Gao et al, 2023), with one known exception being elongated grains in narrow silos that may display a flow rate which increases as the silo discharges (Pongó et al, 2022).…”