کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
660860 | 1458119 | 2010 | 10 صفحه PDF | دانلود رایگان |
The work presents the results of numerical investigation of the flow structure and heat transfer of impact mist jet with low concentration of droplets (ML1 ⩽ 1%). The downward gas-droplets jet issued from a pipe and strikes into at a center of the circular target wall. Mathematical model is based in the solution to RANS equations for the two-phase flow in Euler approximation. For the calculation of the fluctuation characteristics of the dispersed phase equations of Zaichik et al. (1997) [35] model were applied. Predictions were performed for the distances between the nozzle and target plate x/(2R) = 1–10 and the initial droplets size (d1 = 5–100 μm) at the fixed Reynolds number based on the nozzle diameter, Re = 26,600. Addition of droplets causes significant increase of heat transfer intensity in the vicinity of the jet stagnation point compared with the one-phase air impact jet.
Journal: International Journal of Heat and Mass Transfer - Volume 53, Issues 15–16, July 2010, Pages 3156–3165