In physics and engineering, in particular fluid dynamics, the volumetric flow rate (also known as volume flow rate, or volume velocity) is the volume of fluid which passes per unit time; usually it is represented by the symbol Q (sometimes ˙).

Flow rate and velocity are related by \(Q = A\overline{v}\) where \(A\) is the cross-sectional area of the flow and \(v\) is its average velocity. For incompressible fluids, flow rate at various points is constant.

Flow rate can be calculated using the formula: \text{Flow rate}=\cfrac{\text{Volume}}{\text{Time}}. What units are used for flow rate? Common units for flow rate include liters per second (L/s), gallons per minute (GPM), and cubic meters per hour (m^3/h).

Determine the volumetric and mass flow rate of a fluid with our flow rate calculator.

Flow rate may refer to: Flow measurement, a quantification of bulk fluid movement; Mass flow rate (ṁ or μ), the mass of a substance which passes per unit of time; Volumetric flow rate (Q or ˙), the volume of fluid which passes per unit time

2024年2月4日 · Flow rate is the measurement of how much liquid travels in a given length of time, as the name implies. Its current is also affected by the pipe's diameter. The flow rate of a fluid is its ability to flow from one point to another.

2024年3月12日 · Flow rate \(Q\) is defined to be the volume \(V\) flowing past a point in time \(t\), or \(Q=\frac{V}{t}\) where \(V\) is volume and \(t\) is time. The SI unit of volume is \(\mathrm{m}^{3}\). Another common unit is the liter (L), which is \(10^{-3} \mathrm{~m}^{3}\).

Flow rate is the volume of fluid per unit time flowing past a point through the area A. Here the shaded cylinder of fluid flows past point P in a uniform pipe in time t. The volume of the cylinder is Ad and the average velocity is v̄=d/t so that the flow rate is Q=Ad/t=Av̄.

2022年11月8日 · We define the rate at which the fluid flows, the volume of fluid passing through the pipe at a particular location along the pipe per second, the volumetric flow rate, \(I\), sometimes referred to as current: \[I=\dfrac{dV}{dt}\label{flow-rate}\] with standard SI …

This flow rate calculator uses flow velocity and cross-sectional flow area data to determine the volumetric flow rate of liquid. You can calculate the flow rate in five simple steps: Select the shape of the cross-section of the channel; Input all the measurements required to compute the cross-sectional area; Input the average velocity of the flow