Volume flow rate, also known simply as flow rate, is a crucial concept in fluid dynamics, describing the amount of fluid passing through a particular point in a given period. Imagine a river: the volume flow rate tells you how much water flows past a specific point along the river in a certain amount of time Mathematically, volume flow rate (QQ) is defined as the volume of fluid passing through a given cross-sectional area (AA) per unit time (tt). It is typically expressed in units like cubic meters per second (m3/sm3/s), liters per minute (L/minL/min), or cubic feet per minute (ft3/minft3/min).