52 citations · 101 across the 10 of their papers we have counts for
10 papers
A shape optimisation of mutual inductances among coils
Toru Takahashi, Tatsuya Tokito, Yi Cui +1
This paper introduces a shape optimisation framework for achieving desired mutual inductances (MIs) among coils in 3D space. Utilising a wire modelling approach, the coils are disc…
A fast time-domain boundary element method for three-dimensional electromagnetic scattering problems
Toru Takahashi
This paper proposes a fast time-domain boundary element method (TDBEM) to solve three-dimensional transient electromagnetic scattering problems regarding perfectly electric conduct…
A topology optimization of open acoustic waveguides based on a scattering matrix method
Kei Matsushima, Hiroshi Isakari, Toru Takahashi +1
This study presents a topology optimization scheme for realizing a bound state in the continuum along an open acoustic waveguide comprising a periodic array of elastic materials. F…
An enhancement of the fast time-domain boundary element method for the three-dimensional wave equation
Toru Takahashi, Masaki Tanigawa, Naoya Miyazawa
Our objective is to stabilise and accelerate the time-domain boundary element method (TDBEM) for the three-dimensional wave equation. To overcome the potential time instability, we…
A shape optimisation with the isogeometric boundary element method and adjoint variable method for the three-dimensional Helmholtz equation
Toru Takahashi, Daisuke Sato, Hiroshi Isakari +1
This paper presents a shape optimisation system to design the shape of an acoustically-hard object in the three-dimensional open space. Boundary element method (BEM) is suitable to…
An isogeometric boundary element method for three-dimensional doubly-periodic layered structures in electromagnetics
Toru Takahashi, Tetsuro Hirai, Hiroshi Isakari +1
This paper proposes an isogeometric boundary element method (IGBEM) to solve the electromagnetic scattering problems for three-dimensional doubly-periodic multi-layered structures.…
Parallelization of the inverse fast multipole method with an application to boundary element method
Toru Takahashi, Chao Chen, Eric Darve
We present an algorithm to parallelize the inverse fast multipole method (IFMM), which is an approximate direct solver for dense linear systems. The parallel scheme is based on a g…
A fast topology optimisation for material- and geometry-independent cloaking devices with the BEM and the -matrix method
Kenta Nakamoto, Hiroshi Isakari, Toru Takahashi +1
We show a design method of cloaking devices which work for target objects with arbitrary shape and material by a topology optimisation with an accurate and efficient sensitivity an…
A level-set-based topology optimisation for acoustic-elastic coupled problems with a fast BEM-FEM solver
Hiroshi Isakari, Toyohiro Kondo, Toru Takahashi +1
This paper presents a structural optimisation method in three-dimensional acoustic-elastic coupled problems. The proposed optimisation method finds an optimal allocation of elastic…
Pipelining the Fast Multipole Method over a Runtime System
Emmanuel Agullo, Béranger Bramas, Olivier Coulaud +3
Fast Multipole Methods (FMM) are a fundamental operation for the simulation of many physical problems. The high performance design of such methods usually requires to carefully tun…