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Title: New experimental apparatus for the study of the Bénard-Rayleigh problem
Author: Moreno, J.
Jiménez Fernández, Justo
Córdoba, A.
Rojas Blasi, Emilio
Zamora Carranza, Manuel
Keywords: Mesurament
Mecànica de fluids
Fluid mechanics
Issue Date: Jan-1980
Publisher: American Institute of Physics
Abstract: A new experimental system to measure the equivalent thermal conductivity of a liquid with regard to the Bénard-Rayleigh problem was constructed. The liquid is enclosed within walls of polymethylmethacrylate between two copper plates in which there are thermocouples to measure the difference in temperature between the lower and upper surfaces of the layer of liquid. Heat flux is measured by means of a linear heat fluxmeter consisting of 204 thermocouples in series. The fluxmeter was calibrated and the linear relationship that exists between the heat flux and the emf generated was verified. The thermal conductivity of the polymethylmethacrylate employed was measured and measurements of the equivalent conductivity in cylindrical boundaries of two silicone oils were made. The critical value of the temperature difference and the contribution of the convective process to the transmission of heat were determined.
Note: Reproducció del document publicat a:
It is part of: Review of Scientific Instruments, 1980, vol. 51, p. 101-104
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ISSN: 0034-6748
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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