β Scribed by T. Picaro; E.T. White
No coin nor oath required. For personal study only.
-When liquid percolates down a packed bed which is mounted on a support having a significant flow resistance, liquid can accumulate at the bottom of the column to form a part-flooded bed, comprising a lower flooded zone and an upper percolating zone. The support plays a major role in the onset of the part-flooded bed and may greatly restrict the flow capacity of the bed. This paper proposes a simplified analysis for the fluid mechanics of a part-flooded bed. The flooded height-flow rate relation is highly curved and depends on the relative importance of the bed and support flow resistances. The variation of the flooded height with flow rate in the absence of entrained air is easily predicted; however, in practice, air is entrapped in the flooded packing, giving a substantially higher packing flow resistance. The amount of entrapped air has been measured for two spherical packings over a range of flow rates. With this data the flooded height-flow rate relation in the presence of entrapped air may be predicted.
π SIMILAR VOLUMES
## Abstract Gas mixing in a spoutβfluid bed with a cross section of 0.3 Γ 0.03 m and height of 2 m was investigated by simultaneously injecting two different tracer gases. One was injected into the spouting gas flow and the other was injected into the fluidizing gas flow. Steadyβstate tracer gas me
## Abstract Results from an investigation of the fully developed turbulent wake of a circular cylinder are presented. The study was conducted in the liquid phase, in the controlled flow field of a water tunnel. A technique was developed for measuring the intensity of turbulence in water. The decay