TY - JOUR
TI - Features of heat transfer at interaction of an impact swirl jet with a dimple
AU - Terekhov Viktor I
AU - Mshvidobadze Yuriy M
JN - Thermal Science
PY - 2016
VL - 20
IS - 11
SP - 35
EP - 45
PT - Article
AB - Experimental results on investigation of heat transfer at interaction of an  air impact jet with a semi-spherical cavity are presented in this work. This  research is continuation of investigations of turbulent jet interaction with  complex surfaces and search for the method of heat transfer control.  Experiments were carried out with fixed geometry of a semi-spherical cavity  (DC = 46 mm) and swirl parameter (R = 0; 0.58; 1.0; 2.74). The distance  between the axisymmetric nozzle and obstacle was 2÷10 sizes over the nozzle  diameter, and the Reynolds number varied within Re0= (1÷6)•104. It was found  out that with an increase in swirling heat transfer intensity decreases  because of fast mixing of the jet with ambient medium. In general, the  pattern of swirl jet interaction with a concave surface is complex and  multifactor.