RESISTANCE OF SPHERICAL FILLS IN THE CASE
OF FLOW OF SINGLE- AND TWO-PHASE MEDIA

V. V. Lozovetskiia and F. V. Pelevinb

UDC 621.039.546:536.244

The results of experimental investigations of the hydrodynamic 
resistance in spherical fills as applied to the cores of nuclear reactors 
with spherical fuel elements are presented. The experimental setup 
and the procedures of preparation of models, measurement, and processing 
of experimental data are described. The criterial dependences satisfactorily 
describing data on resistance in motion of single- and two-phase media 
in spherical fills are obtained.

Keywords: spherical fuel elements, single- and two-phase media, 
criterial dependences, model of internal separating flow, generalized 
coefficients of hydraulic resistance.
 
aMoscow State University of Forest, 1ya Institutskaya Str., 
Mytishchi, Moscow Region, 141005, Russia; email: lozovetsky@mail.ru; 
bN. É. Bauman Moscow State Technical University, 
Moscow, Russia. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 
82, No. 2, pp. 283-288, March-April, 2009. Original article 
submitted September 28, 2006; revision submitted July 7, 2008.