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EXPERIMENTAL STUDY OF THREE-DIMENSIONAL NATURAL CONVECTION HIGH-RAYLEIGH NUMBER.

Author(s) : BOHN M. S., KIRKPATRICK A. T., OLSON D. A.

Type of article: Article

Summary

THIS PAPER PRESENTS RESULTS FROM AN EXPERIMENTAL PROGRAM AIMED AT IMPROVING THE UNDERSTANDING OF HEAT TRANSFER AND AIR FLOW IN BUILDINGS. THE EXPERIMENTAL APPARATUS CONSISTS OF A CUBICAL ENCLOSURE FILLED WITH WATER IN WHICH EACH WALL MAY BE HEATED OR COOLED IN A CONTROLLED MANNER. A TRANSPARENT, ADIABATIC TOP AND BOTTOM PROVIDE FLOW VISUALIZATION CAPABILITY. AVERAGE HEAT TRANSFER COEFFICIENTS FOR THE WALLS HAVE BEEN MEASURED FOR SEVERAL CONFIGURATIONS. A UNIFIED NUSSELT-RAYLEIGH CORRELATION HAS BEEN COMPUTED. THE HEAT TRANSFER AND FLOW VISUALISATION RESULTS INDICATE THAT EVEN AT RAYLEIGH NUMBERS AS HIGH AS 60 MILLIARD, THE HEAT TRANSFER MECHANISM IS LAMINAR BOUNDARY-LAYER CONVECTION FROM ONE WALL TO THE BULK FLUID.

Details

  • Original title: EXPERIMENTAL STUDY OF THREE-DIMENSIONAL NATURAL CONVECTION HIGH-RAYLEIGH NUMBER.
  • Record ID : 1985-0510
  • Languages: English
  • Source: J. Heat Transf. - vol. 106 - n. 2
  • Publication date: 1984/05
  • Document available for consultation in the library of the IIR headquarters only.

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