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Suzuki, Yoshio; Miyamura, Hiroko
Keisan Kogaku Koenkai Rombunshu (CD-ROM), 16, 4 Pages, 2011/05
Our goal is to evaluate the validity of results obtained from seismic simulation of entire nuclear power plant, and then to estimate real phenomena. In this study, we have established a trial system to evaluate the validity by automatically abstracting a characteristic spatial profile of physical values in consideration of uncertainty caused by discretization, as one of methods to reveal factors of various uncertainties included in the simulation. By applying the system to a seismic simulation, we have confirmed that various characteristic spatial profiles of stress with error estimation are automatically classified and abstracted from the simulation result.
Yamada, Tomonori
Keisan Kogaku Koenkai Rombunshu (CD-ROM), 16, 2 Pages, 2011/05
The Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) has been developing the next-generation supercomputer, which has capability of ten peta floating point operations per second, and will install it at Kobe city. As an application of macro-scale solid mechanics, Japan Atomic Energy Agency and his colleagues proposed a research activity on K entitled "next generation seismic analysis of large plants in its entirety" in Monodukuri field. In this paper, a preliminary study on the finite element analysis for solid mechanics on K is described.
Tatekawa, Takayuki; Kushida, Noriyuki; Miyamura, Hiroko; Teshima, Naoya*; Fujibayashi, Kenichi*; Takemiya, Hiroshi
no journal, ,
no abstracts in English
Yamada, Susumu; Imamura, Toshiyuki*; Okumura, Masahiko; Igarashi, Ryo; Yamamoto, Atsushi; Machida, Masahiko
no journal, ,
no abstracts in English
Sasa, Narimasa; Machida, Masahiko
no journal, ,
Numerical simulations of homogeneous isotropic superfluid turbulence are performed to investigate vortex structure and statistical properties. Large scale structure of quantized vortices is similar to that of Navier-Stokes turbulence. However, inertial range becomes narrower by bottle neck effect of cascade process. We compare the finite difference scheme with the spectral scheme whether the schemes are suitable for a large scale parallel simulation.