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Journal Articles

Application of AMG to the Ginzburg-Landau equation in superconductors

Sasa, Narimasa; Yamada, Susumu; Machida, Masahiko; Arakawa, Chuichi*

Nihon Keisan Kogakkai Rombunshu, 7, p.83 - 87, 2005/05

no abstracts in English

Journal Articles

Novel communication strategy for distributed-shared memory parallel computer

Yamada, Susumu; Imamura, Toshiyuki*; Machida, Masahiko; Arakawa, Chuichi*

Nihon Keisan Kogakkai Rombunshu, 7, p.243 - 252, 2005/05

no abstracts in English

Journal Articles

Branching mechanism of intergranular crack propagation in three dimensions

Itakura, Mitsuhiro; Kaburaki, Hideo; Arakawa, Chuichi

Physical Review E, 71(5), p.055102_1 - 055102_4, 2005/05

 Times Cited Count:8 Percentile:39.34(Physics, Fluids & Plasmas)

The process of slow intergranular crack propagation was investigated by the finite element method model and it was found that branching is induced by partial arresting of a crack front owing to the geometrical randomness of grain boundaries. A possible scenario for the branching instability of crack propagation in a disordered continuous medium is also discussed.

Journal Articles

Bubble dynamics in the thermal shock problem of the liquid metal target

Ishikura, Shuichi*; Kogawa, Hiroyuki; Futakawa, Masatoshi; Kikuchi, Kenji; Hino, Ryutaro; Arakawa, Chuichi

Journal of Nuclear Materials, 318, p.113 - 121, 2003/05

 Times Cited Count:12 Percentile:62.35(Materials Science, Multidisciplinary)

The thermal shock stress in the mercury target vessel was analyzed: the target receives the incident proton beam at the energy of 1 MW with the pulse duration of 1ms. Negative pressure of maximal 61MPa was generated when the initial pressure of 52MPa propagated in mercury. It is expected then that the cavitation may be arisen by the negative pressure. So in order to know the cavitation behavior, the simulation study was carried out by using the equation of motion based on the bubble dynamics for a single bubble, and fundamental parameter analysis was carried out. It is found that a bubble has a potential expansion more than 1000 times with a change of the pressure at the window of the target vessel. Consequently wave propagation will be affected. Theoretical consideration was given to the wave motion of propagation in bubbly liquid. The equation of state in bubbly liquid can be approximated by the polynomial. The diameter of a bubble and the bubble volume fraction inherent in mercury can be decided if the critical pressure, the sound velocity, and resonance frequency is successfully measured by static and dynamic experiment.

Journal Articles

Application of AMG to partial differential equations

Sasa, Narimasa; Machida, Masahiko; Yamada, Susumu; Arakawa, Chuichi

Keisan Kogaku Koenkai Rombunshu, 8(2), p.757 - 758, 2003/05

no abstracts in English

Journal Articles

Development of parallel molecular-dynamics simulation stencil

Shimizu, Futoshi; Kimizuka, Hajime*; Kaburaki, Hideo; Arakawa, Chuichi*

Keisan Kogaku Koenkai Rombunshu, 7(1), p.163 - 166, 2002/05

no abstracts in English

Journal Articles

Application of AMG to Ginzburg-Landau equation for superconductors

Sasa, Narimasa; Machida, Masahiko; Yamada, Susumu; Arakawa, Chuichi

Keisan Kogaku Koenkai Rombunshu, 7(1), p.171 - 172, 2002/05

Algebraic Multi Grid(AMG) is applied to solve the Ginzburg-Landau equations for Superconductors. The method effectively solves large scale linear algebraic equations. AMG is also applicable for systems with complex boundary condition in contrast with usual Geometrical Multi Grid.

Journal Articles

An Analysis of the accident in Super-Kamiokande

Goto, Norikazu*; Imai, Ryuta*; Arakawa, Chuichi

Keisan Kogaku Koenkai Rombunshu, 7(1), p.47 - 48, 2002/05

no abstracts in English

Journal Articles

Development of parallel molecular dynamics stencil

Shimizu, Futoshi; Kimizuka, Hajime*; Kaburaki, Hideo; Arakawa, Chuichi*

Nihon Keisan Kogakkai Rombunshu, 4, p.225 - 230, 2002/04

no abstracts in English

Journal Articles

Development of fluid-structure interaction code for mercury target, 1

Imai, Ryuta*; Arakawa, Chuichi*; Kobayashi, Kenichi*; Hino, Ryutaro; Ishikura, Shuichi*; Kogawa, Hiroyuki; Terada, Atsuhiko*; Haga, Katsuhiro; Watanabe, Tadashi

Dai-14-Kai Suchi Ryutai Rikigaku Shimpojiumu Koen Yoshishu, p.C10_1_1 - C10_1_14, 2000/00

no abstracts in English

Journal Articles

Development of fluid-structure interaction for mercury target, 2

Kobayashi, Kenichi*; Arakawa, Chuichi*; Imai, Ryuta*; Hino, Ryutaro; Ishikura, Shuichi*; Kogawa, Hiroyuki; Terada, Atsuhiko*; Haga, Katsuhiro; Watanabe, Tadashi

Dai-14-Kai Suchi Ryutai Rikigaku Shimpojiumu Koen Yoshishu, p.C10_2_1 - C10_2_3, 2000/00

no abstracts in English

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