5 papers
The Galerkin method for a regularised combined field integral equation without a dual basis function
Kazuki Niino, Shunpei Yamamoto
We propose discretisation of a regularised combined field integral equation (regularised CFIE) only with the Rao-Wilton-Glisson (RWG) basis function. The CFIE is a formulation of i…
Characteristic Basis Function Method Combined with Calderón Multiplicative Preconditioner for PMCHWT Formulation
Tai Tanaka, Kazuki Niino, Naoshi Nishimura
We propose a novel characteristic basis function method for analyzing the scattering by dielectric objects based on the Poggio-Miller-Chang-Harrington-Wu-Tsai formulation. In the p…
Boundary integral equation methods for the two dimensional wave equation in time domain revisited
Mio Fukuhara, Ryota Misawa, Kazuki Niino +1
This study considers the stability of time domain BIEMs for the wave equation in 2D. We show that the stability of time domain BIEMs is reduced to a nonlinear eigenvalue problem re…
Boundary integral equations for calculating complex eigenvalues of transmission problems
Ryota Misawa, Kazuki Niino, Naoshi Nishimura
Resonance frequencies are complex eigenvalues at which the homogeneous transmission problems have non-trivial solutions. These frequencies are of interest because they affect the b…
A discretisation method with the inner product for electric field integral equations
Kazuki Niino, Sho Akagi, Naoshi Nishimura
A discretisation method with the inner product for the electric field integral equation~(EFIE) is proposed. The EFIE with the conventional Galerkin discretisation sho…