anemometer


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anemometer:

see windwind,
flow of air relative to the earth's surface. A wind is named according to the point of the compass from which it blows, e.g., a wind blowing from the north is a north wind.
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Anemometer

An instrument to measure the speed or velocity of gases either in a contained flow, such as airflow in a duct, or in unconfined flows, such as atmospheric wind. To determine the velocity, an anemometer detects change in some physical property of the fluid or the effect of the fluid on a mechanical device inserted into the flow.

An anemometer can measure the total velocity magnitude, the velocity magnitude in a plane, or the velocity component in a particular direction. The cup anemometer, for example, measures the velocity in a plane perpendicular to the axis of its rotation cups. If the cup anemometer is mounted with the shaft perpendicular to the horizontal, it will measure only the component of the wind that is parallel to the ground. Other anemometers, such as the pitot-static tube, are used with the tip aligned with the total velocity vector. Before using an anemometer, it is important to determine how it should be positioned and what component of the total velocity its measurement represents.

An anemometer usually measures gas flows that are turbulent. The cup anemo meter, pitot-static tube, and thermal anemometer are mostly used to measure the mean velocity, while the hot-wire, laser Doppler, and sonic anemometers are usually used when turbulence characteristics are being measured. (The term “thermal anemometer” is often used to mean any anemometer that uses a relationship between heat transfer and velocity to determine velocity.)

anemometer

[‚an·ə′mäm·əd·ər]
(engineering)
A device which measures air speed.

anemometer

An instrument for measuring the velocity of airflow.

anemometer

anemometer
An instrument to measure wind velocity. The common cup type of anemometer consists of three or more hemispherical cups extending on horizontal arms from a vertical shaft or spindle. The higher the speed, the faster the cups will rotate. By suitable gearing, a pointer indicates the speed.

anemometer

an instrument for recording the speed and often the direction of winds
References in periodicals archive ?
However, a properly developed aerodynamic model of the rotor can be very interesting, as the effect of certain parameters can be identified to provide a better understanding of cup anemometer performance.
The saving grace is the current model smartly comes with a stiffener to keep the anemometer anchored vertically, but it really needs a cleaner Lightning plug option, in my view.
Therefore, the change of airflow velocity would result in the circuit current change, which can be used as the measurement principle of plasma anemometer experiments.
Then it was used to examine the errors of vane-type, hot-wire-type and hood-type flowmeters, which are typical anemometers and flowmeters that are widely used in the field.
Moreover, the consideration that a surface vehicle travels through the atmospheric boundary layer is treated analytically to evaluate the effect of the vertical position of a vehicle-mounted anemometer on the prediction of free-stream velocity.
breezeSONIC is made in USA by Etesian Technologies, designer and manufacturer of sophisticated self-powered wireless anemometer systems for wind turbines, cranes, fountains and other applications.
If the funds for purchasing an anemometer are unavailable (or if you are interested in a more hands-on project), you and your students can make your own anemometer using a small DC motor.
* Setup Note For Gauging Gusts: Teachers, for safety reasons, set up the anemometer's base cup so that students don't have to handle pushpins.
Summary: TEHRAN (FNA)- Scientists have succeeded in developing smart wind turbines which use laser-based anemometer in order to increase energy production and reduce extreme loads.
The invention of the anemometer, used to measure wind speed, is credited to the Renaissance architect Leon Battista Alberti, who produced a basic mechanical design in 1450.
Joes Speaking and her mother Anemometer were both unraced.
Rhondda Cynon Taf Council has objected to Pennant Walters Ltd's application to place nine wind turbines, an anemometer and associated infrastructure and buildings on land south of the A465 in Hirwaun, at Hirwaun Common, Mynydd Cefn y Gyngon and Mynydd Bwllfa.