بررسي تجربي و نظري جريان حاوي لجن در يك مجراي واگرا

INVESTIGATION OF THEORITICAL AND EXPERIMENTAL FLOW PATTERN OF DILUTE SLUDEGE IN CONVERGENT DIVERGENT CONDUIT

In this work, the sludge flow in a UASB reactor has been investigated. This research has been conducted considering both practical and theoretical methods. For experiments, a pilot plant was built. In the theoritical method, the governing equations of fluid flow were solved. The mas and momentum 2-D equations were solved for the laminar? Up flow vertical channel. Results demonstrate that a vortex forms after each gas collector. The collector geometry and input velocity can affect the vortex shape and its power. The experimental results were illustrated by photographs, which revealed that stability of vortex depends on the shape of the collector. The streamlines of flow can be generated by dye injection in the reactor.