Results 171 to 180 of about 13,886 (219)
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Development of hot wire anemometer verification device
The Proceedings of Mechanical Engineering Congress Japan, 2020Masahiro Iwanaga, Yuki Sato
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A Hot Wire Anemometer for Cryogenic Hydrodynamic Experiments
Applied Scientific Research, 1992Abstract A hot wire anemometer using superconducting thin films has been developed for measurements in a gaseous 4 He turbulent round jet around 4 K. Localized velocity fluctuations, down to a few microns, and high frequency events, up to 1 MHz can be detected giving access to the study of turbulent subsonic flow with Reynolds numbers ranging up to ...
Bernard Castaing +3 more
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Calibration Unit for Hot-Wire Anemometers
Measurement Techniques, 2004The proposed calibrating unit for hot-wire anemometers can reproduce the unit of airflow velocity to within ±0.65% in the range 0.026–4.65 m/sec. Ways of improving the metrological characteristics are considered.
I. D. Pupyshev +2 more
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The Rotated Hot Wire Anemometer
Review of Scientific Instruments, 1971The novel method of measuring turbulence intensities and shear stress by a rotating single hot wire anemometer presented by Fujita and Kovasznay [Rev. Sci. Instrum. 39, 1351 (1968)] was used to make turbulence measurements in the wake of a thin flat plate.
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A micro silicon hot-wire anemometer
1995 IEEE TENCON. IEEE Region 10 International Conference on Microelectronics and VLSI. 'Asia-Pacific Microelectronics 2000'. Proceedings, 2002A new micromachined hot-wire anemometer has been developed. Extensive tests of the anemometer's dependence on ambient temperature, over-heat ratio, and sensor length have been finalized. Due to its extremely small size, micromachined hot-wire has better sensitivity, temporal and spatial resolutions than the conventional hot-wire.
Mischler, Martin +5 more
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Turbulence Calibration of a Hot Wire Anemometer
AIAA Journal, 1974Introduction T standard technique' for calibrating a hot wire is to plot the anemometer bridge voltage response as a function of the mean flow velocity U as measured with a pitot tube and micromanometer. This mean flow response is assumed to obey some variation of the King's Law response curve for flow over a cylinder and the graph of E vs U is ...
R. H. KlRCHHOFF, R. R. SAFARIK
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A constant temperature hot-wire anemometer
Journal of Scientific Instruments, 1967A compact, inexpensive, constant temperature hot-wire anemometer circuit using solid state operational amplifiers is described. A theoretical expression for frequency response and an experimental check are given. Theoretical and experimental response data for an existing unit are shown.
J C Wyngaard, J L Lumley
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An Optical Fiber Hot-Wire Anemometer
SPIE Proceedings, 1990Gas flow rates can be measured with a hot-wire anemometer which employs a fine wire mounted transversely to the gas flow. The wire is heated by an electrical current and the temperature rise, which depends inversely on the flow rate, is determined by the resistance change of the wire. In the optical fiber anemometer the fine wire is replaced by a short
L. C. Bobb +3 more
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Review of Scientific Instruments, 1968
An analysis is given of the electronic noise and the signal-to-noise ratio for constant-temperature and constant-current hot-wire anemometers. The analysis shows that both anemometers are equivalent in their signal-to-noise ratio if the noise sources are equivalent and the hot-wires are operated at the same conditions.
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An analysis is given of the electronic noise and the signal-to-noise ratio for constant-temperature and constant-current hot-wire anemometers. The analysis shows that both anemometers are equivalent in their signal-to-noise ratio if the noise sources are equivalent and the hot-wires are operated at the same conditions.
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A constant temperature hot-wire anemometer
Journal of Physics E: Scientific Instruments, 1987A constant temperature anemometer is described which is designed to operate hot wires with diameters in the range 0.63-5 mu m. A special feature of the design is the use of separate current sources to supply the different halves of the bridge. This feature eliminates the need for dynamic stability compensation, necessary for commercial constant ...
I S Miller, D A Shah, R A Antonia
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