Natural convective heat transfer from open vertical tubes Journal Articles uri icon

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abstract

  • AbstractNatural convection heat transfer in vertical tubes is described by a one‚Äźdimensional dispersion model similar to that used previously for fluid mixing in the presence of an unstable density gradient. Temperature profiles have been measured in air in 2 m high insulated vertical tubes (21.3, 24.5, 27.7 cm internal diameter), closed at the bottom and open at the top, and heated at the bottom with a known heat flux. The effective mixing lengths for eddy heat transport are of the same order as the tube diameters.

publication date

  • August 1994