Performance characterization of pneumatic single pellet injection system

Conference · Fri Jan 01 04:00:00 EST 1982

OSTI ID:5634276

Schuresko, D D; Milora, S L; Hogan, J T; Foster, C A; Combs, S K

The Oak Ridge National Laboratory single-shot pellet injector, which has been used in plasma fueling experiments on ISX and PDX, has been upgraded and extensively instrumented in order to study the gas dynamics of pneumatic pellet injection. An improved pellet transport line was developed which utilizes a 0.3-cm-diam by 100-cm-long guide tube. Pellet gun performance was characterized by measurements of breech and muzzle dynamic pressures and by pellet velocity and mass determinations. Velocities up to 1.4 km/s were achieved for intact hydrogen pellets using hydrogen propellant at 5-MPa breech pressure. These data have been compared with new pellet acceleration calculations which include the effects of propellant friction, heat transfer, time-dependent boundary conditions, and finite gun geometry. These results provide a basis for the extrapolation of present-day pneumatic injection system performance to velocities in excess of 2 km/s.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5634276
• Report Number(s): CONF-8210204-1; ON: DE84001954
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700205* -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
CLOSED PLASMA DEVICES
ELEMENTS
FUEL PELLETS
HYDROGEN
INJECTION
INTAKE
ISX TOKAMAK
MASS
NONMETALS
PDX DEVICES
PELLETS
PERFORMANCE
REACTOR FUELING
THERMONUCLEAR DEVICES
THERMONUCLEAR REACTORS
TOKAMAK DEVICES
TOKAMAK TYPE REACTORS
VELOCITY