Movement of water within a stream that occurs as discrete eddies and vortices. Turbulent flow is caused by channel topography and friction.

A fluid-flow regime characterized by swirling or chaotic motion as the fluid moves along the pipe or conduit. The linear velocity of the fluid particles is similar regardless of position in the condui [..]

Fluid flow in which the flow lines are confused and mixed. Fluid moves in eddies and swirls. compare laminar flow.

A flow situation in which the fluid particles move in a random manner.

Flow in which the velocity at any point varies on an erratic basic. It occurs when flow velocity exceeds a limiting value or when tube configuration irregularities preclude laminar flow.

hydraulic engineering - flow that is fast, complex, and chaotic

A flow that contains may rapid fluctuations.

See airflow.

A condition of flow in a passage that is typified by rapid movement of fluid in a passage, where the fluid is churning and bouncing off the passage walls. See LAMINAR FLOW.

The period of incomplete darkness following sunset (evening twilight) or preceding sunrise (morning twilight). Twilight is designated as civil, nautical, or astronomical, as the darker limit occurs wh [..]

The erratic, nonlinear flow of a fluid, caused by high velocity. Characterized by random eddying flow patterns superimposed on the general flow progressing in a given direction.

(physics) A form of irregular viscous flow in which the velocity and pressure of the fluid fluctuates at random in both time and space,

Fluid motion in which random motions of parts of the fluid are superimposed upon a simple pattern of flow. All or nearly all fluid flow displays some degree of turbulence. The opposite is laminar flow.