Flow characteristics of the Cascade granular blanket

Conference · Mon Jul 01 00:00:00 EDT 1985 · Fusion Technol.; (United States)

OSTI ID:5790569

Pitts, J H; Walton, O R

Analysis of a single granule on a rotating cone shows that for the 35/sup 0/ half-angle, double-cone-shaped Cascade chamber, blanket granules will stay against the chamber wall if the rotational speed is 50 rpm or greater. The granules move axially down the wall with a slight (5-mm or less) sinusoidal oscillation in the circumferential direction. Granule chute-flow experiments confirm that two-layered flow can be obtained when the chute is inclined slightly above the granular material angle of repose. The top surface layer is thin and fast moving (supercritical flow). A thick bottom layer moves more slowly (subcritical flow controlled at the exit) with a velocity that increases with distance from the bottom of the chute. This is a desirable velocity profile because in the Cascade chamber about one-third of the fusion energy is deposited in the form of x rays and fusion-fuel-pellet debris in the top surface (inner-radius) layer.

• Research Organization: Lawrence Livermore National Laboratory, Livermore, CA
• OSTI ID: 5790569
• Report Number(s): CONF-850310-
• Journal Information: Fusion Technol.; (United States), Vol. 8:1; Conference: 6. topical meeting on the technology of fusion energy, San Francisco, CA, USA, 3 Mar 1985
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BREEDING BLANKETS
FLUID MECHANICS
VORTEX FLOW
BREEDING PELLETS
CASCADE REACTORS
ANGULAR VELOCITY
CENTRIFUGATION
FLOW RATE
GRANULAR MATERIALS
IMPURITIES
LAMINAR FLOW
TURBULENT FLOW
FLUID FLOW
LASER FUSION REACTORS
MATERIALS
MECHANICS
REACTOR COMPONENTS
SEPARATION PROCESSES
THERMONUCLEAR REACTORS
VELOCITY
700201* - Fusion Power Plant Technology- Blanket Engineering