Calculation of heat transfer and flow resistance in the turbulent pipe flow of cooled carbon dioxide in the supercritical region

Abstract

The results are given from a numerical solution of the flow and heattransfer problems in the turbulent pipe flow of supercritical carbon dioxide under cooling conditions. The turbulent transfer coefficients are calculated on the basis of the hypothesis that the path length associated with the variable physical properties is determined by the local values of the latter. Data are obtained on the local coefficients of fluid friction, acceleration resistance, and total flow resistance under cooling conditions. A comparison of the numerical heat-transfer results with experimental data indicates satisfactory agreement.