V. A. Zelenetskii, T. V. Bogatko, “One method for describing boundary layers”, Prikl. Mekh. Tekh. Fiz., 2011, Volume 52, Issue 2,Pages <nobr>73

One method for describing boundary layers

V. A. Zelenetskii^a, T. V. Bogatko^b

^a Berdsk Branch of the Novosibirsk State Technical University, Berdsk, 633004, Russia
^b Kutateladze Institute of Thermophysics, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090, Russia

Abstract: Flow models taking into account pipe roughness are presented. Beta functions are described for some types of roughness. The modeling results are compared with data of classical experiments.

Keywords: wall layer, dynamic length, height and curvature radius of roughness elements, the first and second limiting regimes.

UDC: 533.6:536.24:622.4

Received: 29.09.2009
Accepted: 16.02.2010