Mass flow
Physical size  

Surname  Mass flow  
Formula symbol  


See also: flow (physics) , volume flow 
A mass flow , also known as mass throughput , is the mass of a medium that moves through a crosssection over a period of time .
The mass flow is given in kilograms per second, also per minute or hour with slow flow.
The mass flow
is calculable in fluid mechanics through
With
 : Density of the medium in kg / m³,
 : mean flow velocity in m / s,
 : Crosssectional area in m²,
 : Volume flow in m³ / s,
 : specific weight in N / m³ = kg / (m²s²) and
 : Acceleration of gravity in m / s².
With regard to density, it should be noted that in the case of gases ( i.e. compressible media) the calculation must be expanded to include the possible changes in volume. The mean flow velocity is determined via integration , see also volume flow . To measure the flow there are different measurement methods.
Examples of mass flows: wind , exhaust gas mass flow , river , ocean current , landslide , landslide , grain flow , debris flow , pyroclastic density flow
literature
 Alfred Böge (Hrsg.): The technician's manual, basics and applications of mechanical engineering . 15th edition. Vieweg, Braunschweig and Wiesbaden 1999, ISBN 3528340533 .
Individual evidence
 ^ ^{A } ^{b} Alfred Böge Das Techniker Handbuch , p. 320.
 ^ Alfred Böge Das Techniker Handbuch , p. 337.
 ^ Alfred Böge Das Techniker Handbuch , p. 330.
 ↑ Holger Foysi: Measurement of volume and mass flow. (PDF; 1.8 MB) University of Siegen , April 2, 2015, accessed on November 25, 2018 .