Stresses in liquid lithium modules in a tokamak blanket due to a changing poloidal magnetic field
For a fusion reactor blanket that contains molten lithium or lithium alloys, forces will arise when the magnetic field is changed and cause pressures in the lithium and stresses in the containment vessels. Previous analyses of this problem assume improperly that the conductive fluid is static. For the present analysis, the conductive liquid is contained in a thin-walled cylinder with a constant (toroidal) magnetic field perpendicular to the cylinder axis and with a time-varying (poloidal) magnetic field perpendicular to the toroidal field. The variables in the liquid are governed by the equations of magnetohydrodynamics and are coupled to the electric current and voltage in the cylinder wall, which are governed by Maxwell's equation and Ohm's law. Formulas are derived for the stresses in the cylinder wall caused by bending moment, torsion, shearing, and ring bending that result from the pressure and viscous shear force on the inside surface of the cylinder and from the electromagnetic body force in the cylinder wall. These formulas are used to calculate the module stresses for the design arrived at in the Oak Ridge National Laboratory (ORNL)/Westinghouse Demonstration (DEMO) Reactor Study.
- Research Organization:
- Illinois Univ., Urbana (USA); Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5478324
- Report Number(s):
- CONF-791102-168; TRN: 80-009248
- Resource Relation:
- Conference: 8. symposium on engineering problems of fusion research, San Francisco, CA, USA, 13 Nov 1979
- Country of Publication:
- United States
- Language:
- English
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BREEDING BLANKETS
STRESSES
LITHIUM
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
SHEAR
TOKAMAK TYPE REACTORS
ALKALI METALS
ELEMENTS
FLUID MECHANICS
HYDRODYNAMICS
MECHANICS
METALS
REACTOR COMPONENTS
THERMONUCLEAR REACTORS
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