Results 261 to 270 of about 115,907 (299)

Turbulence in an atmosphere with a non-uniform temperature

Boundary-Layer Meteorology, 1971
In this work the effect of static stability on the development of atmospheric turbulence is investigated. This influence is considered quantitatively by generalizing Prandtl's semi-empirical theory, i.e., by using a correcting factor in the form of a universal function of the Richardson number.
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Near Incompressibility at Uniform Temperature or Entropy in Isotropic Thermoelasticity

Mathematics and Mechanics of Solids, 1998
This article is concerned with longitudinal wave propagation in an isotropic thermoelastic material that is nearly incompressible at either uniform temperature or uniform entropy. A dimensionless effective bulk modulus X is defined such that X-+ oo corresponds to incompressibility at uniform temperature. For 0 < X < 1, both longitudinal waves are
Leslie, D.J., Scott, N.H.
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Optimising the Low Temperature Growth of Uniform ZnO Nanowires

MRS Proceedings, 2009
AbstractZinc oxide (ZnO) nanowires have been widely investigated and various different methods of their synthesis have been suggested. This work is devoted to the optimisation of the growth conditions for uniform in terms of structure and evenly distributed ZnO nanowire arrays. The nanowire growth process includes two steps: 1.
Gabrielyan, Nare, Paul, Shashi, Cross, R. B. M.   +2 more
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A design of furnace for very uniform temperatures

Journal of Scientific Instruments, 1967
A tubular furnace containing five independently heated cylindrical metal blocks placed end-to-end is used to provide a very uniform temperature distribution over most of the length of the central block. A furnace with a heated length of 65 cm used for the comparison of thermocouples with a standard resistance thermometer at 630.5°C can be adjusted to ...
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Metamaterial Thermoelectric Generation under Uniform Temperature Environment

Proceedings of the 2022 Conference on Lasers and Electro-Optics Pacific Rim, 2022
We propose a thermoelectric device that can produce a thermal gradient even in a uniform-temperature environment.
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Rapid annealing of GaAs: Uniformity and temperature dependence of activation

Journal of Applied Physics, 1985
Scanning microwave photoconductance, capacitance-voltage profiling, and Hall effect measurements were used to investigate the uniformity of activation of Si-, Be-, and Mg-implanted 2- and 3-in.-diam, semi-insulating GaAs substrates after rapid thermal annealing in a commerical furnace.
K. D. Cummings, S. J. Pearton, G. P. Vella-Coleiro   +2 more
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Temperature Uniformity in Heating-Up Processes

Journal of Fluids Engineering, 1946
Abstract The treatment of temperature-uniformity problems by the method first introduced by Paschkis is extended and enlarged. It is shown that uniformity calculations can be reduced to the solution of a simple trigonometric relation which can be readily solved and analyzed.
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A model of a uniform-temperature thermionic generator

Journal of Applied Physics, 1980
A system generating electromotive force in isothermic conditions has been described. The effect appears against the background of thermionic emission obtained from a couple of electrodes working in a magnetic field.
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Designing flow and temperature uniformities in parallel microchannels reactor

AIChE Journal, 2014
A design methodology is proposed to maintain gas and liquid flow nonuniformities below an acceptable limit in a parallel micro/millichannels reactor by determining the maximum allowed temperature deviation in each part of the reactor. The effect of temperature deviation on flow distribution was quantified using a hydraulic resistive network model.
Al-Rawashdeh, M.I.M., Yue, F., Patil, N.G., Nijhuis, T.A., Hessel, V., Schouten, J.C., Rebrov, E.   +6 more
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Effect of non-uniform temperature field in viscosity measurement

Journal of Visualization, 2015
In viscosity measurement, temperature control is very important. In this research, the effects of temperature distribution in viscosity measurement are investigated. Vibrational viscometers are preferred in experiments over other types of viscometers due to their low cost, easy to use and effective continuous viscosity measurement capability.
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