REVIEW

HEAT TRANSFER AND HYDRODYNAMICS IN 
CHANNELS ROTATING ABOUT THEIR AXIS

I. V. Shevchuk and A. A. Khalatov

UDC 532.5 + 536.24

Axial  rotating  channels  are widespread in  power  engineering 
industry,  heat  power  engineering, power engineering, chemical 
engineering, aircraft engines, space systems, etc. Predominantly 
they  are  cylindrical  in  shape.  Converging   and   diverging 
axisymmetric channels as well as channels of arbitrary shape are 
often  used.  The  angular  rotational  velocity,  which, in the 
general case, can be variable with time, is made constant in the 
majority of works. It is rotation  that has a substantial effect 
on  the  characteristics  of  flow  and  heat transfer, changing 
(increasing or decreasing  depending  on  the  type of flow) the 
values  of  the  heat-transfer  coefficient  and  coefficient of 
hydraulic resistance by a  factor of 2-3 or more. Much attention 
has been paid recently to investigating the action of additional 
complicating factors-injection or suction, the form of the inlet 
velocity  profile,  the disposition of the channel, etc. Several 
works  are  concerned  with  relatively  infrequent  problems of 
the flow of a liquid that occupies  partially  the cross-section 
of the channel, flow in a tube that is closed at one end, etc.