This article relies largely or entirely on a single source. (December 2018) |
A cubic metre per second (m3s−1, m3/s, cumecs or cubic meter per second in American English) is the unit of volumetric flow rate in the International System of Units (SI) equal to that of a stere or cube with sides of one metre (39.37 in) in length exchanged or moving each second. It is popularly used for water flow, especially in rivers and streams, and fractions for HVAC values measuring air flow.
Cubic metre per second | |
---|---|
Unit system | SI |
Unit of | volumetric flow rate |
Symbol | m3/s |
In SI base units | m3·s−1 |
The term cumec is also used, as shorthand for "Cubic metres per second",[1] with the plural form cumecs also common in speech.[citation needed] It is commonly used between workers in the measurement of water flow through natural streams and civil works, but rarely used in writing. Data in units of cumec are used along the y-axis or vertical axis of a flow hydrograph, which describes the time variation of discharge of a river (the mean velocity multiplied by cross-sectional area). A moderately sized river discharges in the order of 100 cumecs.
Conversions
edit1 cubic metre per second | = | 1000 | litres per second |
= | 60 | kilolitres per minute | |
= | 86.4 | megalitres per day | |
= | 31.5576 | gigalitres per year | |
≈ | 219.969248 | imperial gallons per second | |
≈ | 264.172051 | US gallons per second | |
≈ | 35.314454 | cubic feet per second | |
≈ | 1.305 | cubic yards per second | |
≈ | 25566.497 | acre-feet per year | |
≈ | 1113676621 | cubic feet per year | |
≈ | 0.00757090916 | cubic miles per year |
References
edit- ^ "Units: C", The University of North Carolina at Chapel Hill, webpage: UNC-Rowlett. Archived on June 2, 2018.
See also
edit- Standard litre per minute
- Conversion of units
- Volumetric flow rate
- Volumetric flux
- Cusec, shorthand for cubic feet per second