# Flow rate

Flow rate is described as volume of water passing through a given spatial area over a certain period of time. The area might be the cross-section of the river bed or the pore space of a soil or a sediment.

 $\LARGE Q=v_{w}\times A$ Q = flow rate (m3/s) vw = flow velocity (m/s) A = cross-sectional area (m2)

## Used for

Advective transport

$$\frac{\delta S}{\delta t}=\frac{\theta }{\rho }k_{att}C-k_{detC}$$

## Contact

Frank von der Kammer

University of Vienna, Austria

Email: frank.von.der.kammer@univie.ac.at