EXPERIMENTAL DETERMINATION OF THE FRICTION FACTOR COEFFICIENT IN MICROCHANNELS

摘要

Experimental data used to determine the friction factor in microchannels are presented. Glass mi crochannels with a circular cross section, diameters of 34.5, 33.6, and 24.5 μm, and different lengths are studied in the experiments. Pure deionized degassed water is used as a working fluid. The range of the Reynolds numbers is 13 ≤ Re ≤ 330. A method of two channels is used to calculate the friction factor. The results obtained are in good agreement with theoretical predictions for the case of a developed laminar flow in circular channels, but the use of the method of two channels has some constraints.