TY - JOUR
T1 - P-adaptive finite element analysis of unbounded electromagnetic wave problems
AU - Choi, T.m.
AU - Webb, J. P.
PY - 2001/12/1
Y1 - 2001/12/1
N2 - The boundary that artificially truncates an unbounded domain in the finite element analysis of an electromagnetic wave problem necessarily introduces a numerical error. The adaptive technique proposed reduces this boundary error, as well as the usual finite element discretisation error. The scattering or radiating object and its immediate surroundings are meshed with hierarchal finite elements. Outside, a thick layer of free space is meshed with relatively few hierarchal wave-envelope elements. During p-adaption, increasing the order of the wave-envelope elements reduces the boundary error. Moreover, this reduction in boundary error is selective: in directions of strong radiation, the error reduction is greater.
AB - The boundary that artificially truncates an unbounded domain in the finite element analysis of an electromagnetic wave problem necessarily introduces a numerical error. The adaptive technique proposed reduces this boundary error, as well as the usual finite element discretisation error. The scattering or radiating object and its immediate surroundings are meshed with hierarchal finite elements. Outside, a thick layer of free space is meshed with relatively few hierarchal wave-envelope elements. During p-adaption, increasing the order of the wave-envelope elements reduces the boundary error. Moreover, this reduction in boundary error is selective: in directions of strong radiation, the error reduction is greater.
UR - http://www.scopus.com/inward/record.url?scp=0035570941&partnerID=8YFLogxK
U2 - 10.1049/ip-map:20010776
DO - 10.1049/ip-map:20010776
M3 - Article
AN - SCOPUS:0035570941
SN - 1350-2417
VL - 148
SP - 388
EP - 392
JO - IEE Proceedings: Microwaves, Antennas and Propagation
JF - IEE Proceedings: Microwaves, Antennas and Propagation
IS - 6
ER -