3 papers
math.AP2022
Nesterov's acceleration for level set-based topology optimization using reaction-diffusion equations
Tomoyuki Oka, Ryota Misawa, Takayuki Yamada
This paper discusses level set-based structural optimization. Level set-based structural optimization is a method used to determine an optimal configuration for minimizing an objec…
math.NA2019
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…
math.NA2016
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…