Incorporation of a circular boundary condition into the program POISSON

Technical Report · Fri Mar 02 04:00:00 EST 1984

DOI:https://doi.org/10.2172/5419391· OSTI ID:5419391

Caspi, S; Helm, M; Laslett, L J

Two-dimensional problems in electrostatics or magnetostatics frequently are solved numerically by means of relaxation techniques. In many such problems the ''sources'' (charges or currents, and regions of permeable material) lie exclusively within a finite closed boundary curve and the relaxation process in principle then could be confined to the region interior to such a boundary - provided a suitable boundary condition is imposed onto the solution at that boundary. The present notes discuss and illustrate the use of a boundary condition of such a nature as to imply the absence of external sources, in order thereby to avoid the inaccuracies and more extensive meshes present when alternatively a simple Dirichlet or Neumann boundary condition is specified on a somewhat more remote outer boundary.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5419391
• Report Number(s): LBL-17064; ON: DE85016527
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
BOUNDARY CONDITIONS
COMPUTER CALCULATIONS
COMPUTER CODES
DATA
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
ELECTROSTATICS
EQUIPMENT
INFORMATION
MAGNETIC FIELDS
MAGNETS
NUMERICAL DATA
P CODES
RELAXATION
STORAGE RINGS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING MAGNETS
SUPERCONDUCTING SUPER COLLIDER
THEORETICAL DATA