Title page for etd-1102113-111338


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URN etd-1102113-111338
Author Chih-Ming Kuo
Author's Email Address No Public.
Statistics This thesis had been viewed 5358 times. Download 316 times.
Department Electrical Engineering
Year 2013
Semester 1
Degree Ph.D.
Type of Document
Language English
Title A Novel Adaptive FDTD Method for Analyzing Three-Dimensional Curved Conducting Objects with the Coating
Date of Defense 2013-11-27
Page Count 86
Keyword
  • Adaptively adjusted time-step
  • CFDTD method
  • CFL stability criterion
  • Curved conducting geometry
  • RCS
  • Abstract The chief shortcoming of the conventional conformal finite-difference time-domain (CFDTD) method is a global time step reduction to ensure stability, due to the small irregular cells truncated by the curved conducting geometry. In this dissertation, we employ the concept of the equivalent material constants into the integral form of Faraday‚Äôs law to analyze the curved configuration with the coating. Hence, we can theoretically derive the stability criterion of each irregular cell based on the same procedure for the Courant-Friedrichs-Lewy (CFL) stability criterion. Therefore, the local time step size of each small irregular cell can be chosen adaptively. An adaptively adjusted time-stepping procedure is presented and is theoretically proven to ensure numerical stability. The radar cross section (RCS) results of various curved conducting objects with the coating are computed. Comparisons of accuracy and efficiency of our method with other established methods are performed.
    Advisory Committee
  • Kin-Lu Wong - chair
  • Tzong-Lin Wu - co-chair
  • Ken-Huang Lin - co-chair
  • Tu-De Lin - co-chair
  • Tzyy-Sheng Horng - co-chair
  • Ruey-Bing Hwang - co-chair
  • Lih-Tyng Hwang - co-chair
  • Chih-Wen Kuo - advisor
  • Files
  • etd-1102113-111338.pdf
  • Indicate in-campus at 1 year and off-campus access at 1 year.
    Date of Submission 2013-12-02

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