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香港浸会大学数学系乔中华博士12月26日来校讲学


  应数学与计算科学学院和校第五届研究生创新论坛的邀请,香港浸会大学数学系乔中华博士将于12月26日来js金沙所有网址讲学,欢迎全校师生踊跃参加。学术报告具体安排如下:
  学术报告题目:A FAST HIGH ORDER METHOD FOR ELECTROMAGNETIC SCATTERING BY LARGE OPEN CAVITIES
  内容摘要:The electromagnetic scattering from a rectangular large open cavity embedded in an infinite ground plane is studied. By introducing a nonlocal artificial boundary condition, the scattering problem from the open cavity is reduced to a bounded domain problem. A compact fourth order finite difference scheme is then proposed to discrete the cavity scattering model in the rectangular domain, and a special treatment is enforced to approximate the boundary condition, which makes truncation errors reach O(h^4) in the whole computational domain. A fast algorithm, exploiting the discrete Fourier transformation in the horizontal and a Gaussian elimination in the vertical direction, is employed, which reduces the discrete system to a much smaller interface system. An effective preconditioner is presented for the iterative solver to solve this interface system. Numerical results demonstrate the remarkable accuracy and efficiency of the proposed method.

  主 讲 人:乔中华博士
  时 间:2011年12月26日(周一)下午4:30
  地 点:金鸡岭校区F电2


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