Dissertation > Excellent graduate degree dissertation topics show

Study of FDTD Algorithm of Electromagnetic Scattering by Complex Media and Related Techniques

Author: YangLiXia
Tutor: GeDeBiao
School: Xi'an University of Electronic Science and Technology
Course: Radio Physics
Keywords: EM scattering FDTD method Parallel computing anisotropic medium dispersive medium
CLC: TM15
Type: PhD thesis
Year: 2006
Downloads: 893
Quote: 7
Read: Download Dissertation

Abstract


Based on the Yee’s cell theory, averaging value method and interpolation method, the FDTD method for electromagnetic scattering by anisotropic media is presented. By analyzing the anisotropic media FDTD iterative formulas, the computation of each electric or magnetic field component node involves the 28 nodes around it.On the basis of the serial FDTD for anisotropic media, the parallel FDTD algorithm for media of electric anisotropy and electric-and-magnetic anisotropy are investigated, respectively. To perform the parallel computation, a spatial decomposition, i.e. the FDTD computation space divided into several sub-domains is first carried out. Then a designated individual processor computes the field nodes inside each sub-domain with a small amount of data being communicated from neighboring sub-domains. According to the characteristic of the anisotropic media FDTD computation formulas, there exists an overlapping region between adjacent sub-domains, within which the data communication is needed. In this paper, the data communication rules between adjacent sub-domains are also analyzed for the anisotropic media parallel FDTD in detail.A parallel algorithm for the anisotropic media FDTD method on a distributed network by using the message-passing module is discussed as well. The parallel platform of PVM system is applied to perform FDTD parallel algorithm. The structure of the parallel program adopts a master-slave organization. The functions of the master program mainly include the creation of process, the initialization of iterative, the collection and display of the computation results, and so on. Similarly, the functions of the slave program mainly include the execution of FDTD computation, and the load of slave process is distributed by master process. Finally, flow chat of the parallel FDTD program is given, and the concrete functions of each module are discussed in detail.In these parallel FDTD algorithms for anisotropic media, the special treatment for the absorbing boundary, total-field scattered-field boundary and near-to-far field extrapolation boundary are analyzed in detail. To exemplify the availability of the parallel FDTD algorithm, the electromagnetic scattering of the typical objects are computed. The simulation results of parallel speedup, parallel efficiency is presented in this paper. Then, the relationship of parallel FDTD computation performance with granularity and data commutation is also analyzed.Based on the uniaxial anisotropy perfectly matched layer (UPML) theory, the application of the UPML absorbing boundary in the parallel FDTD algorithm is

Related Dissertations

  1. Research and Design of a High-Performance Scalable Public Key Cryptographic Coprocessor,TN918.1
  2. Research on Video Compression Algorithm Based on Multi-core Computing Platform,TN919.81
  3. Numerical Simulation of Radiofrequency Waves in Magnetized Plasma,TL612
  4. Image retrieval method and system for parallel computing,TP391.3
  5. Theoretical Study and Related Applications of the Conformal Finite Difference Time Domain,O441.4
  6. Application of Parallel FDTD and MPSTD Algorithm in EM Scattering,O441.4
  7. A Parallel DDM Preconditioner for Solving Finite Element Discretization of Elasticity Problem in Three Dimension,O241.82
  8. The Design and Implementation of Intrusion Detection System for High-Speed Network,TP393.08
  9. The Design and Implementation of a Distributed Storage and Retrieval System,TP333
  10. Experimental Study of Biological Effects of Electromagnetic Radiation,TM937
  11. Research on Optical Properties of Micro-ring Resonator Based on Surface Plasmon Polaritons,TN25
  12. Research of Lightning Pulse Electromagnetic Fields and Coupling Effects,O441.4
  13. The Design for Shaanxi RealTime WRF Forecasting System Based on Beowulf Cluster,P409
  14. Study of FDTD Algorithm for Thin Dispersive Media Layers and Related Issues,TN011
  15. Research and Implementation of MPI on CELL Broad Engine,TP332
  16. Mobile phone near field electromagnetic radiation and Defensive Measures,X591
  17. The Application of High-Performance GPU Technology in the Lattice Boltzmann Method Simulation,TP391.41
  18. Algorithm Study on Accelerate CV Image Segmentation and Exterior Industrial Image Reconstruction by CUDA,TP391.41
  19. Research of Finite Element Method on GPU,O241.82
  20. Research and Application of Cellular Automata on Parallel Image Encryption,TP309.7
  21. DC Connected Block(dccb) Based Fast Circuit Partition Algorithm,TN402

CLC: > Industrial Technology > Electrotechnical > Fundamental Theory of Electrical Engineering > The application of electromagnetic theory
© 2012 www.DissertationTopic.Net  Mobile