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Selected problems of heat exchange modelling in pipe channels with ball turbulisers

Badur J., Charun H.

Archives of Thermodynamics

2007

Vol. 28, no. 1

65-88

The paper presents selected problems of numerical modelling of intensification cases of the convective heat transfer in pipe channels with turbulisers. The example of water flow with ball shaped turbulisers through a vertical, copper pipe, externally heated by water vapour condensation heat, is used to present the rules and guidelines for a numerical model construction in the manner existing in the state-of-art CFD codes. This model, its implementation and numerical results has been verified against an experimental data with satisfactory agreement. /

Pomiar spadku ciśnienia w konwekcyjnym wymienniku ciepła z rur gładkich

Cebula A., Mysza J.

Czasopismo Techniczne. Mechanika

2001

R. 98, z. 2-M

93--101

This paper shows analysis of experimental results of the total pressure drop in flow across banks of tubes. The resistance of a bank with viscous fluids of constant density is expressed by the following dimensionless function relation Eu=f(Re). In this paper author suggests a multinominal form of the latter relation as is most suitable @eng