Desirable swirling motion as the fuel mixture flows into the cylinder. Also applies to the motion of a fluid or airstream with random pressures and velocities.
Airflow that is not smooth and steady
In a turbulent motion, the true velocity and pressure vary in a disorderly manner. A turbulent motion is always unsteady, since at a given point the velocity changes continuously in a very irregular way.
The chaotic twisting, swirling motion in flowing fluid.
Flow caused by superimposing irregular currents on a uniform flow.
Disturbance of the water.
(Of the atmosphere) Quality or state in which the air flow at a given point changes constantly in velocity and direction (contrasted with laminar flow).
Bumpy, disrupted motion in the atmosphere that occurs when winds or air currents crash into each other.
Fluid flow in which the motion at any point varies rapidly in direction and magnitude.
A state of fluid flow in which the instantaneous velocities exhibit irregular and apparently random fluctuations so that, in practice, only statistical properties can be recognized and analyzed.
unstable flow of a liquid or gas
instability in the atmosphere
a state of violent disturbance and disorder (as in politics or social conditions generally); "the industrial revolution was a period of great turbulence"
the flow of a fluid in which random velocity fluctuations distort and confuse the flow lines of individual molecules
The agitation of the grounds in the coffee bed during the brew cycle, created by the spray pattern, rate of water flow, and configuration of the brew basket. Go to top
Motion of fluids in which local velocities and pressures fluctuate irregularly in a random manner as opposed to laminar flow where all particles of the fluid move in distinct and separate lines.
Random and chaotic motion in a fluid causing mixing of the fluid and characterised by high Reynolds number
Unorganised movement in liquids and gases resulting from eddy formation.
Disturbance in the atmosphere causing gusts of varying strengths.
a state or quality of being violently disturbed or agitated. olcano: mountain or hill built up by the eruption of molten rock and ash from the earth's interior. eather: condition of the atmosphere at a certain time and a certain place.
The rough and sudden movements of air which travel in an air current. In the atmosphere, turbulence is caused by changes in wind flow.
Disturbed or chaotic flow pattern of water or other fluids.
The result of the disruption of airflow caused by an interruption to its passage, such as when it hits a rear wing and its horizontal flow is spoiled.
irregular, disturbed or apparently chaotic movement of water or air
Disturbance, agitation or tumult. [D03368
A swirling motion of the atmosphere that interrupts the flow of wind.
irregular atmospheric motion especially when characterized by up and down currents
Disrupted flow in the atmosphere that produces gusts and eddies.
Property of an airstream moving in a swirling or tumbling fashion; see also Eddies
The vertical motion of the air, at times violent, which can cause the up-and-down movement of a plane, etc.
(Turbulent Flow) Random and continuously changing air motion which are superposed on the mean motion of the air.
Rough air encountered during airplane flights.
Any irregular or disturbed flow in the atmosphere.
Air flow which is not smooth and steady. When an airplane flies through turbulent air, it can unexpectedly rise, drop, roll, pitch or yaw very abruptly.
A fluid flow that is characterized by a disorderly and irregular eddying motion. Turbulence impedes flow, and highly turbulent flow in blood can cause red blood cell and platelet damage.
Turbulent airflow occurs when the flow breaks up into eddies and complex patterns. This can cause unstable forces on an object. As the airflow moves from the front of a car to the rear it becomes turbulent.
The irregular and instantaneous motions of air which is made up of a number of small of eddies that travel in the general air current. Atmospheric turbulence is caused by random fluctuations in the wind flow. It can be caused by thermal or convective currents, differences in terrain and wind speed, along a frontal zone, or variation in temperature and pressure.
Disturbed air motions caused by numerous eddies of different size, making conditions rough for flying.
Irregular motion of air; uneven currents of air.
A pattern of water flow characterized by cross currents and eddies which mix the water (as opposed to a streamlined or laminar flow pattern). Turbulence may be caused by excessive flow rates, curves or rough surfaces in the flow channel, or by turbulence promoters (such as baffles) purposely created to mix the water.
Air that flows at varying speeds through the vocal tract producing a hissing noise. Whispering often is characterized by a turbulent quality.
1. Irregular fluctuations occurring in fluid motions. It is characteristic of turbulence that the fluctuations occur in all three velocity components and are unpredictable in detail; however, statistically distinct properties of the turbulence can be identified and profitably analyzed. Turbulence exhibits a broad range of spatial and temporal scales resulting in efficient mixing of fluid properties. Analysis reveals that the kinetic energy of turbulence flows from the larger spatial scales to smaller and smaller scales and ultimately is transformed by molecular (viscous) dissipation to thermal energy. Therefore, to maintain turbulence, kinetic energy must be supplied at the larger scales. See also ocean mixing. 2. Random and continuously changing air motions that are superposed on the mean motion of the air. See aircraft turbulence. Fleagle, R. G., and J. A. Businger, 1980: An Introduction to Atmospheric Physics, 2d ed., Academic Press, p. 264. Frisch, U., 1995: Turbulence: The Legacy of A. N. Kolmogorov, Cambridge University Press, 1–22. Hinze, J. O., 1975: Turbulence, 2d ed., McGraw–Hill, 790 pp.