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Nakatani, Takeshi; Inamura, Yasuhiro
Hamon, 26(1), p.42 - 45, 2016/02
In the Materials and Life science experimental Facility (MLF) of J-PARC, the computing environment group was organized from the construction of MLF. The group has been developed and operated the neutron event-recording data acquisition (DAQ) system, the data analysis library and the device control software framework for neutron experimental instruments in MLF. In this article, we report the new developments as follows: The universal event-recording DAQ system to make the most of the intense neutrons; the data process framework to enable multi-dimensional data analysis at various neutron instruments; the remote access to be easily able to monitor a measurement status and handle many kinds of enormous data from anytime, anywhere.
- matrixToh, Yosuke; Oshima, Masumi; Hatsukawa, Yuichi; Hayakawa, Takehito; Shinohara, Nobuo
Journal of Radioanalytical and Nuclear Chemistry, 250(2), p.373 - 376, 2001/11
Times Cited Count：17 Percentile：74.75(Chemistry, Analytical)no abstracts in English
Mishima, Kaichiro*; Nakamura, Hideo
JAERI-Review 2001-012, 51 Pages, 2001/03
JAERI-Review-2001-012.pdf:2.26MB
no abstracts in English
Yang Zumao*;
JNC TN9400 2000-009, 81 Pages, 2000/02
JNC-TN9400-2000-009.pdf:47.3MB
It is important to study thermal stratification and striping phenomena for they can induce thermal fatigue failure of structures. This presentation uses the AQUA code, which has been developed in Japan Nuclear Cycle Development Institute (JNC), to investigate the characteristics of these thermal phenomena in water, liquid sodium, liquid lead and carbon dioxide gas. There are altogether eight calculated cases with same Richardson number and initial inlet hot velocity in thermal stratification calculations, in which four cases have same velocity difference between inlet hot and cold fluid, the other four cases with same temperature difference. The calculated results show : (1) The fluid's properties and initial conditions have considerable effects on thermal stratification, which is decided by the combination of such as thermal conduction, viscous dissipation and buoyant force, etc., and (2) The gas has distinctive thermal stratification characteristics from those of liquid because for
Miyake, Yasuhiro*; *; ; Kimura, Nobuyuki
JNC TN9400 2000-016, 40 Pages, 1999/12
JNC-TN9400-2000-016.pdf:3.71MB
ln the conventional visualization system for the computational results, only Japanese (Nihongo) Line Printer (NLP) was available to print two dimensional cross sectional plots of vector and scalar fields. To evaluate the phenomena, an analyst had to print many plots on the NLP. This task makes difficult to check the computational results immediately after the calculation. Recently, as the visualization tools, we introduced Micro AVS and Field View which are utilized widely in the scientific and the industrial fields. ln order to show the numerical results on the visualization software, we constructed a post processing system which convert the results of the numerical code to "lntermediate files" which can be read by the visualization tools. As using this system, the examination of the numerical results can be executed on the display of the personal computer. Furthermore, the persuasive report and paper with high quality can be produced due to the color printing. As for the transient calculation, the change of the phenomena can be visually evaluated by using the animation function.
+H
CH
+H and CD+HCDH+H reactions using variational transition state theory and the multidimensional semiclassical tunneling methodKurosaki, Yuzuru*; Takayanagi, Toshiyuki
Journal of Chemical Physics, 110(22), p.10830 - 10842, 1999/06
Times Cited Count：20 Percentile：53.59(Chemistry, Physical)no abstracts in English
; Yamaguchi, Akira
PNC TN9410 98-028, 33 Pages, 1997/12
The safety analysis of FBR plant system for sodium leak phenomena needs to evaluate the deposition of the aerosol particle to the components in the plant, the chemical reaction of aerosol to humidity in the air and the effect of the combustion heat through aerosol to the structural component. For this purpose, ABC-INTG (Aerosol Behavior in Containment-INTeGrated Version) code has been developed and used until now. This code calculates aerosol behavior in the gas area of uniform temperature and pressure by 1 cell-model. Later, however, more detailed calculation of aerosol behavior requires the installation of aerosol model into multi-cell thermal hydraulic analysis code AQUA. AQUA can calculate the carrier gas flow, temperature and the distribution of the aerosol spatial concentration. On the other hand, ABC-INTG can calculate the generation, deposition to the wall and flower, agglomeration of aerosol particle and figure out the distribution of the aerosol particle size. Thus, the combination of these two codes enables to deal with aerosol model coupling the distribution of the aerosol spatial concentration and that of the aerosol particle size. AQUA and ABC-INTG were developed separately, therefore, several subroutine were modified and composed. Especially, the interface program which exchanges data between these two codes is important to execute transient calculation. This report describes aerosol behavior model, how to install the aerosol model to AQUA and new subroutine equipped to the code. Furthermore, the test calculations of the simple structural model were executed by this code, appropriate results were obtained. Thus, this code has prospect to predict aerosol behavior by the introduction of coupling analysis with multi-dimensional gas thermo-dynamics for sodium combustion evaluation.
*; Kunugi, Tomoaki; Zhang, Y.*
CIPUS Annual Report, 0, p.1 - 7, 1996/00
no abstracts in English
*; Kataoka, Isao*; *; Hirano, Masashi
Nihon Kikai Gakkai Rombunshu, B, 59(566), p.3003 - 3008, 1993/10
no abstracts in English
Hirano, Masashi; *
Nihon Kikai Gakkai Rombunshu, B, 58(556), p.3613 - 3618, 1992/12
no abstracts in English
Hirano, Masashi; *
Nihon Kikai Gakkai Rombunshu, B, 58(556), p.3619 - 3624, 1992/12
no abstracts in English
Ohno, Shuji
no journal, ,
Characteristics of sodium combustion and subsequent heat transfer behaviors were investigated in detail based on the measurement in the test which was conducted with the main focus on the multi-dimensional thermal-hydraulics during a large leak rate sodium column and splashing fire.
Tanaka, Masaaki
no journal, ,
Author has proposed a procedure combined with V&V and numerical prediction processes called as V2UP (V&V plus Uncertainty quantification and Prediction) in a numerical estimation by multi-dimensional simulation codes. In the V2UP, uncertainty quantification by Grid Convergence Index (GCI) is required in the verification and the fundamental validation steps. The numerical simulations and the uncertainty quantifications were conducted using several GCI estimation methods in order to specify the reference method in the V2UP. Through the examinations, the SLS-GCI (Simplified Least Square version GCI) method modified from the Eca's least-square version GCI method could be defined.
Matsuura, Yuto*; Matsukawa, Shun*; Itakura, Kenichi*; Hayano, Akira; Suzuki, Yukinori*
no journal, ,
no abstracts in English
