EXPERIMENTAL STUDY OF FLOW STRUCTURE
AND HEAT TRANSFER UNDER A JET FLOW
PAST A SPHERICAL-CAVITY OBSTACLE

V. I. Terekhov, V. L. Barsanov,
S. V. Kalinina, and Yu. M. Mshvidobadze

UDC 536.24

The results of an experimental study of the aerodynamic 
characteristics and heat transfer under a jet flow past a spherical-cavity 
obstacle are presented. It has been revealed that in a spherical cavity 
the flow becomes nonstationary and is characterized by low-frequency 
oscillations of local values of the heat flow density. The heat transfer 
intensity in a hollow is lower than on a flat obstacle, and in the 
region of depression this decrease is practically completely compensated 
by an increase in the heat-transfer surface area.

S. S. Kutateladze Institute of Thermal Physics, Siberian 
Branch of the Russian Academy of Sciences, 1 acad. Lavrentiev Ave., 
Novosibirsk, 630090, Russia; email: terekhov@itp.nsc.ru. Translated 
from Inzhenerno-Fizicheskii Zhurnal, Vol. 79, No. 4, pp. 29-37, 
July-August, 2006. Original article submitted May 3, 2005.