A new parallel meshing technique integrated into the conformal FDTD method for solving complex electromagnetic problems

A new efficient parallel finite-difference time-domain (FDTD) meshing algorithm, based on the ray tracing technique, is proposed in this paper. This algorithm can be applied to construct various FDTD meshes, such as regular and conformal ones. The Microsoft F# language is used for the algorithm coding, where all variables are unchangeable with its parallelization advantage being fully exploited. An improved conformal FDTD algorithm, also integrated with an improved surface current algorithm, is presented to simulate some complex 3D models, such as a sphere ball made of eight different materials, a tank, a J-10 aircraft, and an aircraft carrier with 20 aircrafts. Both efficiency and capability of the developed parallel FDTD algorithm are validated. The algorithm is applied to characterize the induced surface current distribution on an aircraft or a warship.

[1]  S. Mahmoud,et al.  Optimizing the Compact-FDTD Algorithm for Electrically Large Waveguiding Structures , 2007 .

[2]  Hsi-Tseng Chou,et al.  Convergence Study of Current Sampling Profiles for Antenna Design in the Presence of Electrically Large and Complex Platforms Using Fit-UTD Hybridization Approach , 2009 .

[3]  Xiaobiao Shan,et al.  A new energy harvester using a piezoelectric and suspension electromagnetic mechanism , 2013 .

[4]  Theodoros D. Tsiboukis,et al.  Reduction of numerical dispersion in FDTD method through artificial anisotropy , 2000 .

[5]  Yu Zhang,et al.  EMC Analysis of Antennas Mounted on Electrically Large Platforms with Parallel FDTD Method , 2008 .

[6]  Robert J. Lee,et al.  An approach for automatic grid generation in three-dimensional FDTD simulations of complex geometries , 2002 .

[7]  Allen Taflove,et al.  Computational Electrodynamics the Finite-Difference Time-Domain Method , 1995 .

[8]  K. Mahdjoubi,et al.  A parallel FDTD algorithm using the MPI library , 2001 .

[9]  Y. Chen,et al.  AutoMesh: an automatically adjustable, nonuniform, orthogonal FDTD mesh generator , 1999 .

[10]  L. Cristoforetti,et al.  Parallel Implementation of a 3D Subgridding FDTD Algorithm for Large Simulations , 2011 .

[11]  Jonathan Hill,et al.  Efficient Implementation of Mesh Generation and FDTD Simulation of Electromagnetic Fields , 1999 .

[12]  Jian Wang,et al.  Development of a Novel FDTD (2, 4)-Compatible Conformal Scheme for Electromagnetic Computations of Complex Curved PEC Objects , 2013, IEEE Transactions on Antennas and Propagation.

[13]  Lihua Tang,et al.  A 2DOF hybrid energy harvester based on combined piezoelectric and electromagnetic conversion mechanisms , 2014 .

[14]  Bin Chen,et al.  TRANSIENT RESISTANCE ANALYSIS OF LARGE GROUNDING SYSTEMS USING THE FDTD METHOD , 2012 .

[15]  Raj Mittra,et al.  A conformal FDTD software package modeling antennas and microstrip circuit components , 2000 .

[16]  F. Teixeira,et al.  Parallel and Explicit Finite-Element Time-Domain Method for Maxwell's Equations , 2011, IEEE Transactions on Antennas and Propagation.

[17]  R. Luebbers,et al.  FDTD mesh generation using computer graphics technology , 2003, IEEE Antennas and Propagation Society International Symposium. Digest. Held in conjunction with: USNC/CNC/URSI North American Radio Sci. Meeting (Cat. No.03CH37450).

[18]  Wen-Yan Yin,et al.  A Novel Dielectric Conformal FDTD Method for Computing SAR Distribution of the Human Body in a Metallic Cabin Illuminated by an Intentional Electromagnetic Pulse (Iemp) , 2012 .

[19]  N. Chavannes,et al.  Mastering Conformal Meshing for Complex CAD-Based C-FDTD Simulations , 2008, IEEE Antennas and Propagation Magazine.