| Mass transfer coefficients and fluid flow patterns are determined experimentally for a circular cylinder situated in a crossflow of an impinging slot jet. A key feature of this work is to examine the effect of offset whereby the cylinder axis is displaced from the symmetry plane of the jet. The effects of the jet-generating nozzle width, the cylinder-to-nozzle separation distance, the offset ditance, and the Reynolds number are investigated. Two nozzle widths are studied--0.250 and 0.500 cylinder diameters. For each of the nozzle widths, five cylinder-to-nozzle separation distances are used, including 3 1/4, 4 1/4, 5 1/4, 6 1/4, and 7 1/4 cylinder diameters. In addition to the aligned case (i.e., no offset), the two offset distances considered are 0.5 and 1.0 cylinder diameters. The Reynolds number ranged from 9.0 x 10('3) to 6.3 x 10('4) for the smaller nozzle width and from 4.6 x 10('3) to 3.2 x 10('4) for the larger one.;Flow visualization experiments performed using the oil-lampblack technique show that the jet impinges on the cylinder even when it is in the offset positions, and that the impingement angle (relative to the forward stagnation point) increases with increasing Reynolds number and with increasing offset, but decreases with increasing cylinder-to-nozzle separation distance.;The main body of experimental results indicates that the Sherwood number decreases with increasing offset and with increasing the cylinder-to-nozzle separation distance, but it increases, at a given Reynolds number, with increasing the nozzle width. The offset-related reduction in the Sherwood number is found to decrease with increasing the cylinder-to-nozzle separation distance and with increasing the nozzle width.;With regard to the low-Reynolds number results, the best agreement between the experimental and computed results occurs at the lowest Reynolds number at which data could be collected. With increasing Reynolds number, greater deviations are in evidence owing to the departure between the conditions of the experiments and those postulated on the computations.;Numerical solutions are obtained for a laminar jet (Re < 1000) and for Prandtl numbers of 0.7 and 2.5. A special set of low-Reynolds number experiments is performed to compare with the numerical results. |
