A TWO-DIMENSIONAL ANALYSIS OF A SUBCRITICAL EXTERNALLY MODERATED CYLINDRICAL CAVITY REACTOR (thesis)

Technical Report · Thu Aug 01 04:00:00 EDT 1963

OSTI ID:4077016

Nawrocki, E A

Age-diffusion theory is used to perform a twodimensional analysis of a subcritical, externally moderated, cylindrical cavity reactor. The external moderator is limited to the sides only; no end moderation is considered. The Fermi-age equation is solved for the moderator. Thermal diffusion equations for the core and moderator are also formulated and solved. An extraneous, line neutron source of strength S/sub x/cos pi z/h is assumed on the axis of the cylindrical cavity. Application of the diffusion theory boundary conditions gives an expression relating the core flux power constant with the fuel loading, reactor size, and the maximum source strength, S/sub x. Sample calculations are made for an assumed reactor size, and source strength, graphite moderator, and varying pressures and enrichments of UF/sub 6/ fuel. (auth)

• Research Organization: Air Force Inst. of Tech., Wright-Patterson AFB, Ohio
• NSA Number: NSA-18-015472
• OSTI ID: 4077016
• Report Number(s): GNE/Phys/63-15; AD-418557
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BOUNDARY CONDITIONS
CRITICALITY
CYLINDERS
DIFFUSION
ENRICHMENT
EQUATIONS
FERMI AGE
FUELS
GRAPHITE MODERATOR
MATHEMATICS
MODERATORS
NEUTRON SOURCES
POWER
PRESSURE
REACTOR CORE
REACTOR FUELING
REACTOR TECHNOLOGY
REACTORS
URANIUM HEXAFLUORIDE
ZONES