【摘要】 讨论在直角坐标系下用卷积完全匹配层(CPML)截断圆柱波导开放边界的模型,给出了CPML的构造参数.计算了不同频率和模式激励源作用下CPML反射引起的相对误差,数值结果表明,最大相对误差都小于-70dB,能够满足模拟计算的要求.更多还原

【Abstract】 This paper deals with the problem of truncating the open boundaries of cylindrical waveguides under the rectangular coordinate system, and gives the CPML’s construction parameters. The performance of CPML was simulated when it was used to truncate the cylindrical waveguides excited by the sources with different frequencies and modes. The numerical results show that the maximum relative error is less than -70 dB, which can meet the requirement of numerical simulation.更多还原