TY - JOUR
TI - Interaction of a hot jet with two cold side jets
AU - Nouali Nassira
AU - Mataoui Amina
JN - Thermal Science
PY - 2015
VL - 19
IS - 6
SP - 2115
EP - 2126
PT - Article
AB - Spreading of the multijet in terms of both the velocity and temperature field  depends strongly on the flow type related to the velocity and temperature  ratios between the cold side jets to the hot central one. This is the reason  why the present work focuses on numerical investigation of non isothermal  three parallel non-ventilated turbulent plane jets. As well, it seems natural  to pick as reference the available experimental data. The numerical  predictions confirm the three types (A, B, C) of flow patterns given by the  available flow visualization and reveal a fourth that will be called type D.  The purpose of the present study is to explore the effect of the velocity  ratio on the decay rates of the velocity and temperature in the fully  developed region. It is found that the addition of side jets increase the  rate of decrease of the centerline velocity for the flow of type A and  decreases in the other cases. The effect of various types of flow on the rate  of decrease of the velocity and the temperature in the fully developed flow  region are investigated in details: This led to establish several  correlations of the rate of decrease that play an important role in the  diffusion of momentum and temperature.