Results 181 to 190 of about 13,886 (219)

A directionally sensitive hot- wire anemometer

Experiments in Fluids, 1997
A new directionally sensitive velocity measurement system based upon a single oscillating hot-wire probe has been developed. The vibration of the hot-wire was effected by a piezoelectric oscillator that could be driven at different amplitudes and frequencies.
A. M. Moulin, M. Gaster, C. N. Woodburn, J. R. Barnes, M. E. Welland   +4 more
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Hot-wire anemometer paper tape reader

Papers presented at the December 13-15, 1960, eastern joint IRE-AIEE-ACM computer conference on - IRE-AIEE-ACM '60 (Eastern), 1960
The Hot-Wire Anemometer Paper Tape Reader was conceived as a relatively simple apparatus to serve as a high reliability device such as required in peripheral computation equipment. The hot-wire anemometer principle has been employed extensively in the past for the study of transient air flow phenomena in compressors and turbines.
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Calibration method for a hot wire anemometer

Journal of Physics E: Scientific Instruments, 1976
Describes a practical method for analysing the calibration of constant temperature hot wire anemometers whose output voltage is not linearized. This applies to a two-dimensional incompressible flow whose velocity ranges between 2 and 16 m s-1. For a single wire, normal to the flow direction, King's law written in the form U2= alpha + beta Vn is ...
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Improved calibration of hot-wire anemometers

Journal of Physics E: Scientific Instruments, 1983
A new method of treating the data obtained for static calibration of hot wires has been developed. The method employs a Taylor series expansion of the nonlinear hot-wire equation about initial estimates of the required calibration constants. An iterative procedure using the Newton-Raphson technique then yields the new calibration constants.
M K Swaminathan, R Bacic, G W Rankin, K Sridhar   +3 more
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Vibration of hot-wire anemometer filaments

Journal of Fluid Mechanics, 1971
Hot-wire filament vibration generated by fluctuating aerodynamic loads is found to occur in turbulent flow fields. The motion of the filament relative to the stream can cause errors in the indicated velocity fluctuations. Analysis and experiment show that these errors are probably serious only when the velocity fluctuations are confined within a narrow
A. E. Perry, G. L. Morrison
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Hot Wire and Hot Film Anemometers

1980
Hot wire and hot film sensors are used for measurements of fluctuations in the wind. Such anemometers are in competition with both mechanical and sonic anemometers. At least some of the mechanical sensors are more stable in calibration, and less expensive. The high frequency resolution of the hot wire/hot film sensors, however, cannot be matched by any
L. Hasse, M. Dunckel
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Calibration of a three-element hot-wire anemometer

Review of Scientific Instruments, 1984
A fast method of calibrating a three-component hot-wire probe in a computer-controlled digital anemometer system is presented.
G. T. Skinner, W. J. Rae
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A simple hot wire anemometer probe

Journal of Physics E: Scientific Instruments, 1968
This note describes a simple hot wire probe found suitable for a wide range of anemometer applications.
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[How reliable is a hot-wire anemometer?].

Der Anaesthesist, 1985
To examine the advantage of hot-wire anemometer for clinical use, we have checked two types of this tools with respect to reliability and validity. It was found that electronic suppression of noise caused a distortion of the measurements. Furthermore changes of transducers were also responsible for deviations from true values.
H, von Rechenberg, H, Konder, K, Höser, H, Lennartz   +3 more
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A Constant-Temperature Hot-Wire Anemometer

Architectural Science Review, 1979
This article describes a constant-temperature hot-wire anemometer that measures average and turbulent wind velocities. Its main features are good accuracy and ease of calibration and operation.
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