SOME REMARKS ON FLOWS IN CHANNELS WITH PERIODIC ABRUPT EXPANSIONS

Abstract

Flow in a certain class of plane and axisymmetrical periodic channels have been theoretically and experimentally examined. The general properties of solution of the stationary Navier-Stokes equation in such flows have been formulated. The results of experiments have been analysed with help of the Forchheimer equation. Some general remarks on the Darcy law and the Forchheimer equation applicability basing on presented theory and visualization of examined flows have been also formulated.

KEYWORDS:

• Periodic channels
• Forchheimer equation
• Flow visualization

Notes

† The work has been done in the Strata Mechanics Research Institute, Polish Academy of Science, Kraków, Reymonta 27.