anemometer

(redirected from Anemometers)
Also found in: Dictionary, Thesaurus, Medical.
Related to Anemometers: Sling psychrometer

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.
..... Click the link for more information.
.

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 ?
I reviewed Vaavud's first-gen Mjolnir smartphone anemometer a few years ago and discovered its short comings, yet appreciated its utility on the water and land.
On the other hand, vane-type, hot-wire-type, and hood-type anemometers and flowmeters are light and easy to carry and thus are widely used in the field.
However, the 100 ms temporal resolution of the anemometers used in the present study, is small relative to the time scales of the turbulent motions.
Until the time when a single anemometer and anemometer geometry again become the defacto industry standard, manufacturers will likely not be able to report area factors that can be used with any of the newer instrumentation types available.
DC motors are inexpensive, readily available, and by turning their shaft using either a propeller or the cup/shaft arrangement found on commercial anemometers, can act as generators.
Rotating vane anemometers (Figure 1) sense the air speed from the pressure differentials.
The two anemometer masts, which would be put up by npower renewables, would be sited at Northside Farm, Kirkharle, and Bav-ington Hill Head, Capheaton, both in Northumberland.
Andrew Pegg, company secretary at Yuill said: "We're not aware of anybody else using these wind anemometers in the industry but they are a valuable addition to the health and safety procedures of any construction site giving staff accurate information.
Hemispherical cups are attached to the ends of these arms to catch the wind and the anemometers speed of rotation increases the wind speed.
Instruments such as hot-wire anemometers and manometer/pitot tubes are most often used.
From sailors to scientists, kite flyers to foresters, and pilots to golfers, the Kestrel 1000 and 2000 anemometers are being appreciated for their convenience and accuracy.
The cup anemometers used in this study were 20 cm (7.