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Showing 1 to 20 of 115 for “"Anemometer"”.
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A mm-scale aeroelastic oscillation-based anemometer
… has been used to produce a low-cost, mm-scale anemometer that measures air flow to ±(5% + 0.5m/s) from 1-25m/s. This paper describes the prototype and the experiments that informed its design, and shows how a similar system could operate at far smaller scales than existing anemometers.
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A thermistor anemometer for measurement of air velocity
Digitized by Kansas Correctional Industries
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A thermistor anemometer for measurement of air velocity
Digitized by Kansas Correctional Industries
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Hot-Wire Anemometer for the Boundary Layer Data System
… for decades. This thesis presents a hot-wire anemometer suitable for use with the Boundary Layer Data System (BLDS). BLDS provides a unique platform for in- flight measurements because of its small, self-contained, robust design and flexible architecture. Addition of a hot-wire anemometer …
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A rapidly scanning three-velocity-component laser Doppler anemometer
… three-velocity - component laser Doppler anemometer has been developed. It permits scans through 3-dimensional flows to obtain space-time velocity information. Since it has lower signal-averaging bias than pointwise measurements, only short record times are required to obtain sufficient …
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Evaluation of the dynamic characteristics of the K-Gill anemometer
The dynamic characteristics of the K-Gill anemometer were evaluated by comparing the anemometer with a hot wire system in a field test, after the static characteristics of the anemometer had been evaluated in a wind tunnel test. The wind tunnel test showed a non-linear and a non-cosine behavior, as …
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The design, construction and calibration of a low velocity anemometer calibrator
Digitized by Kansas Correctional Industries
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Laser doppler anemometer measurements of Reynolds stresses in a fully developed pipe flow
A laser Doppler Anemometer (LDA) is used to make Reynolds stress measurements in a fully developed, turbulent pipe flow. Traverses are made to measure shear stress, normal stresses, and the correlation coefficient. To assess the accuracy of this system, these measurements are compared with results …
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Quantifying the effects of airflow distortion on anemometer wind speed measurements from merchant ships
Anemometers on Voluntary Observing Ships (VOS) are usually located above the bridge in a region where the effects of air flow distortion, created by the presence of the ship, may be large. Until now it was not known whether measurements from such anemometers would be biased high or low, and the …
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Visualisation of dynamic flow processes using a novel pulsed multi-element hot-wire anemometer.
… of a novel Single-Element Pulsed Hot-Wire Anemometer (SEPWA) and its multi-element applications to fluid flow visualisation. Unlike previous pulsed anemometers which have separate heating and sensing wires, the methods described here utilise a single wire as both heater and sensor. …
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An evaluation of the three-dimensional split-film anemometer for measurement of atmospheric turbulence
… Inc., Model 1080D three-dimensional split-film anemometer system was evaluated for use in the measurement of atmospheric turbulence. Calibration constants were obtained and the suggested method of data analysis was evaluated. Changes were made in the second approximation to the T.S.I.-suggested …
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Total velocity vector measurements in an axial-flow compressor using a 3-component Laser Doppler Anemometer
A three-color, three-component Laser Doppler Anemometer (LOA) capable of making simultaneous measurements of three components of velocity is described, and the use of this LOA to measure three non-orthogonal velocity components in the rotor blade passage of a single-stage axial-flow compressor is …
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Measurements of the length of the zone of flow establishment in a jet using a Laser Doppler Anemometer
… fluid was investigated using a Laser Doppler Anemometer and microthermocouple probe. Also, velocity and temperature profiles were measured through various cross-sections of the jet; A 3-dimensional traversing mechanism with feedback and interface circuitry was constructed and then controlled …
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Measurement of oil-water flows in deviated pipes using thermal anemometry and optical probes
… The dual probe is a combination of a hot-film anemometer and two optical probes. One of the optical probes was used to simplify the analysis of hot-film signals. The dual split-film probe is similar to the dual probe except that it uses a split-film anemometer instead of a hot-film anemometer. …
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Measurement of three-dimensional horseshoe vortex flow in a duct
… technique using a single slanted hotwire anemometer is evaluated. The hotwire anemometer measurements are compared with measurements of the same flow made with a five-hole pressure probe. A two-dimensional laminar and turbulent boundary layer analysis is performed at mid-height on the body.
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A measurement system for turbulence properties in a three- dimensional flow using a data logger
An analysis is presented for hot wire/film anemometer measurement of mean velocities and turbulent stresses in a three dimensional flow field with a predominant flow direction. The experimental data can be taken with an automated traverse under the control of a digital data acquisition system which …
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Statistical analysis of low level atmospheric turbulence
… data measured with Model 1080 total vector anemometer and Model 1296 dual split-film probe manufactured by Thermo-Systems Incorporated have been calculated. The time series was divided into a certain number of data blocks depending on the lowest frequency of interest and the storage capacity …
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Performance measurement of a ten kilowatt horizontal axis wind turbine
… power was developed. An improved digital anemometer odometer was designed and built. Tests were performed with the windmill powering a resistive heating load as well as charging a battery.
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