TY - JOUR
TI - Improvement of thermal homogenization using multiple swirling jets
AU - Braikia Mohamed
AU - Loukarfi Larbi
AU - Khelil Ali
AU - Naji Hassan
JN - Thermal Science
PY - 2012
VL - 16
IS - 1
SP - 239
EP - 250
PT - Article
AB - The aim of this study is to examine different blowing configurations of  multiple swirling jets for use it in terminal units of ventilation  applications. The influence of several parameters such as the inclined vanes  of diffuser and the sense of rotation of the single or multiple swirling  jets, their number and their arrangement on the flow resulting dynamically  and thermally is experimentally investigated. Flow rate was adjusted at  Reynolds numbers, Re0, ranging from 104 to 30.103. The current study is  carried out under uniform heat flux condition for each diffuser at Reynolds  number of 30.103, the air being the working fluid. Experiences concerning the  fusion of several jets show that the resulting jet is clearly more  homogenized under swirling influence. The findings of this study show that  the gap between the jets and their sense of rotation relative to the central  jet, affects the quality of the homogenization of ambiance. Among the studied  different configuration, the one which consists of a swirling central jet  controlling the behavior of six swirling jets in counter-rotation is shown to  be the most effective in terms of thermal destratification.