Results 221 to 230 of about 180,484 (283)

Technique for preparing hot wires

Journal of Scientific Instruments, 1963
A method is described of preparing hot wires which enables the wires to be discarded after a short period of use. A detailed description is given of how the hot wire is fastened to the supporting needles.
Meel, D.A. van, Vermij, H.
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On the rotating, slanted, hot-wire technique

Experiments in Fluids, 1991
The purpose of this paper is to convey information and experience gained in the use of a rotating slanted hot-wire probe to measure the complete Reynolds stress tensor and the mean velocity vector. The technique is limited to nearly one-dimensional flows with turbulence intensities less than 10%.
S. Russ, T. W. Simon
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Historical Evolution of the Transient Hot-Wire Technique

International Journal of Thermophysics, 2010
The paper attempts to describe the historical evolution of the transient hot-wire technique, employed today for the measurement of the thermal conductivity of fluids and solids over a wide range of conditions. Starting from the first experiments with heated wires in 1780 during the discussions of whether gases could conduct heat, it guides the reader ...
Marc J. Assael, Konstantinos D. Antoniadis, William A. Wakeham   +2 more
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The Transient Hot-Wire Technique: A Numerical Approach

International Journal of Thermophysics, 1998
The measurement of the thermal conductivity of a fluid by means of the transient hot-wire technique so far has made use of an analytical solution of the energy conservation equation for an ideal model, coupled with a set of approximate analytical corrections to account for small departures from the model. For this solution to be valid, constraints were
M. J. Assael, L. Karagiannidis, N. Malamataris, W. A. Wakeham   +3 more
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Silicon carbide alloys produced by hot wire, hot wire plasma-assisted and plasma-enhanced CVD techniques

Applied Surface Science, 2001
In this work, we report the optical and compositional properties of hydrogenated amorphous silicon carbide (a-SiC:H) thin films produced by plasma-enhanced chemical vapor deposition (PE-CVD), hot wire CVD (HW-CVD) and hot wire plasma-assisted CVD (HWPA-CVD) processes.
I. Ferreira, M.E.V. Costa, L. Pereira, E. Fortunato, R. Martins, A.R. Ramos, M.F. Silva   +6 more
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Composition and structure of silicon-carbide alloys obtained by hot wire and hot wire plasma assisted techniques

Vacuum, 2002
Abstract In this work we present results concerning the composition and structure of intrinsic thin film silicon carbide alloys obtained by hot wire and hot wire plasma assisted techniques using ethylene as carbon gas source. The data show that by increasing the percentage of ethylene in the gas mixture from 14% to 60% the optical band gap is ...
I Ferreira, A Cabrita, E Fortunato, R Martins   +3 more
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A hot-wire measurement technique for complex turbulent flows

1st National Fluid Dynamics Conference, 1988
A hot-wire technique is described which can be used to measure all three components of the local mean velocity vector and all six components of the Reynolds stress tensor in a low-intensity turbulent flow which is arbitrarily skewed in pitch and yaw by as much as 30 degrees.
M. AL-BEIRUTTY, S. ARTERBERRY, F. GESSNER   +2 more
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Hot-Wire Technique for Droplet Measurements

1984
An instrument using hot-wire technology to measure droplet size distributions in the 1 to 450 µm size range is discussed. Such instrumentation has several advantages over present techniques which are dominated by a variety of laser light scattering approaches.
DS Mahler, DE Magnus
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Deposition of a-Si:H with the hot-wire technique

Journal of Non-Crystalline Solids, 1993
Amorphous hydrogenated silicon (a-Si:H) was deposited by SiH 4 decomposition on a bot tungsten filament. A substrate temperature of T s =400 o C was chosen since an improved degradation behaviour is expected is expected as a result of low hydrogen incorporation. The effects of gas pressure, substrate-to-filament distance d s-f and filamenttemperature
R. Zedlitz, F. Kessler, M. Heintze
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Advances on the hot wire technique

Journal of the European Ceramic Society, 2008
The hot wire technique is considered to be an effective and accurate means of determining the thermal conductivity of ceramic materials. However, specifically for materials of high thermal conductivity, the appropriate time interval to be considered in calculations is a decisive factor for getting accurate and consistent results.
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