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Flow may refer to:

Science and technology[edit]

Relating to the movement of material[edit]

  • Fluid dynamics, or fluid flow, the motion of a gas or liquid
  • Environmental flow, the amount of water necessary in a watercourse to maintain a healthy ecosystem
  • Flow chemistry, a chemical reaction run in a continuous stream
  • Flow cytometry, a technique for counting, examining and sorting microscopic particles suspended in a stream of fluid
  • Mass flow rate, the movement of mass per time
  • Traffic flow, the study of interactions between vehicles, drivers, and infrastructure
  • Volumetric flow rate, the volume of a fluid which passes through a given surface per unit of time


  • Flow (mathematics), a variable that depends on time
  • Flow network, a directed graph where each edge receives a flow
  • Signal-flow graph, a graphical means of showing the relations among the variables of a set of linear algebraic relations

Computer science[edit]

Other uses in science and technology[edit]

  • Flow (psychology), a psychological state where a person is fully immersed and focused on an activity or task
  • Flow diagram, with multiple meanings
  • Flowchart, a visual representation of procedural programming
  • Functional flow block diagram, in systems engineering
  • Signal flow, in wave propagation, the path a signal takes from source to output
  • Stock and flow, in economics and finance, a quantity measured over an interval of time
  • Workflow, a repeatable pattern of activity, usually involving multiple tasks with a specific set of outcomes


Other uses[edit]

See also[edit]