Modeling Exposure to Electromagnetic Fields with Realistic Anatomical Models: The Brooks Finite Difference Time Domain (FDTD); Final technical rept. Mar 2007-Feb 2008

摘要

Air Force Research Laboratory/Human Effectiveness Directorate Radio Frequency Radiation Branch (AFRL/RHDR) and Naval Health Research Center (NHRC) have long used Finite Difference Time Domain (FDTD) software to study radiofrequency radiation (RF) bioeffects. FDTD is a direct time-domain solver for Maxwell's equations. The original Brooks FDTD code was developed as part of the Brooks Dosimetry Project and has been repeatedly enhanced to meet empirical and theoretical research needs. Many feature upgrades have been added to the original Fortran FDTD code, and recently the code has been completely rewritten in C. Both versions of Brooks FDTD are parallelized for Beowulf clusters and have run on more than one hundred processors. In addition to code, a number of segmented anatomical models have been created for the Brooks Dosimetry Project. These models include a human, rhesus monkey, goat, and several rat models (See Appendix E). The Brooks FDTD codes, used with these anatomical models, allow researchers to perform useful RF bioeffects modeling to aid ongoing RHDR and NHRC research efforts. To ensure fidelity of FDTD results, Brooks FDTD has been validated using several methods which are reported here.