A method for computing fields near the origin of a cylindrical coordinate system in time domain finite-difference electromagnetic simulations

Conference · Mon Dec 31 23:00:00 EST 1990

OSTI ID:5461295

Pasik, M F; Seidel, D B; Kiefer, M L; Coats, R S; Pointon, T D; Quintenz, J P

One problem with electromagnetic time domain finite-difference simulations in cylindrical coordinates is the rapidly decreasing characteristic dimension of the cells as r approaches zero. In order to satisfy the Courant stability condition a small time step is needed to insure stability, which is undesirable because it increases the cost of the simulation. In our presentation, we will describe a method which uses a rectangular grid and an annular cylindrical grid which overlap to perform electromagnetic simulations of cylindrical geometries. The two grids are connected by interpolating the field at the grid points of one grid using field values from the second grid. 2 refs.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5461295
• Report Number(s): SAND-91-1514C; CONF-9109108--2; ON: DE91015431
• Country of Publication: United States
• Language: English

Related Subjects

657002* -- Theoretical & Mathematical Physics-- Classical & Quantum Mechanics
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
COMPUTER CODES
COMPUTERIZED SIMULATION
CONFIGURATION
CYLINDRICAL CONFIGURATION
ELECTROMAGNETIC FIELDS
FINITE DIFFERENCE METHOD
ITERATIVE METHODS
NUMERICAL SOLUTION
PLASMA SIMULATION
Q CODES
SIMULATION
WAVE PROPAGATION