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Hosoda, Atsushi*; Sato, Seiji*; Yamamoto, Ryuichi*; Yamamoto, Asao*; Yatake, Yoichi*
JNC TJ8400 2005-007, 145 Pages, 2005/01
JNC-TJ8400-2005-007.pdf:172.71MB
We have conducted the flow and transport simulations using the 3D fracture models with large contact area of fracture faces varying the standard deviation of apertures, and studied the results. Then we have simulated the hydraulic tests for the 10 cm - square natural granite rock samples with a single fracture and compared the results with the measured transmissivity. Finally, we have analyzed the relationship of microscopic and macroscopic fluid property.
Muraoka, Tamotsu*; Sato, Seiji*; Yamamoto, Asao*; Yatake, Yoichi*; Asano, Rinichi*; Yamamoto, Ryuichi*
JNC TJ8400 2003-074, 160 Pages, 2004/01
JNC-TJ8400-2003-074.pdf:909.35MB
The heterogeneity of the transmissivity and aperture in a single fracture, so called "in-plane heterogeneity", is considered to have an effect on the migration of radionuclides in a host rock of geological disposal of nuclear wastes. Aiming at better understanding of this effect for the safety assessment of geological disposal, we have improved the computer simulation code for the 3D flow and transport analysis in a single fracture developed in 2002 using the lattice Gas Automaton (LGA) method, and we have conducted the various flow and transport simulations using the 3D fracture models. Upon the improvement of the LGA code, we have investigated the macroscopic averaging method for the pseudo-4D face-centered-hypercubic (FCHC) model of 3D LGA simulation to come up with relation to map the numerical results of the LGA code onto real physical quantities such as pressure and velocity. Furthermore, we have improved the usability of the LGA code and its computational efficiency by algorithm tuning and parallel processing. We have also surveyed the results of the previous research on the in-plane heterogeneity of single fractures, examined the parameters to describe the heterogeneity, and obtained the 3D mathmatical model by S.R. Brown and P.W.J. Glover to create fractally rough synthetic fractures with these parameters reproduced well. Based on the above results, we have conducted the 3D simulations of fluid flow and mass transport in various numerically synthesized fractures. Finally, we have evaluated the effects of the parameters describing the in-plane heterogeneity on the property of fluid flow and mass transport through single fractures.
Yamamoto, Asao*; Yatake, Yoichi*
JNC TJ8410 2003-001, 18 Pages, 2003/03
JNC-TJ8410-2003-001.pdf:0.98MB
SIERRA-II had the prediction diffusion calculation function based on the "Meteorological Agency lattice mark value prediction information (GPV)", and the prediction dose evaluation function by using the prediction diffusion calculation result.
Miyauchi, Kazuya*; Yamamoto, Asao*; Yatake, Yoichi*; Kasuya, Kazunori*
JNC TJ4440 2002-001, 197 Pages, 2002/03
JNC-TJ4440-2002-001.pdf:8.54MB
None
Adachi, Masaaki*; Ishizuki, Shigeru*; Ogasawara, Shinobu*; Kume, Etsuo; Yatake, Yoichi*; Nemoto, Toshiyuki*; Kawasaki, Nobuo*; Kawai, Wataru*
JAERI-Data/Code 2000-043, 220 Pages, 2001/02
JAERI-Data-Code-2000-043.pdf:7.39MB
no abstracts in English
Kawasaki, Nobuo*; Nemoto, Toshiyuki*; Kawai, Wataru*; Ogasawara, Shinobu*; Ishizuki, Shigeru*; Kume, Etsuo; Yatake, Yoichi*; Adachi, Masaaki*
JAERI-Data/Code 2000-039, 134 Pages, 2001/01
JAERI-Data-Code-2000-039.pdf:4.32MB
no abstracts in English
Yatake, Yoichi*; Kume, Etsuo; Kawai, Wataru*; Nemoto, Toshiyuki*; Kawasaki, Nobuo*; Adachi, Masaaki*; Ishizuki, Shigeru*; Ogasawara, Shinobu*
JAERI-Data/Code 2000-038, 57 Pages, 2000/12
JAERI-Data-Code-2000-038.pdf:2.3MB
no abstracts in English
Ishizuki, Shigeru*; Ogasawara, Shinobu*; Kawai, Wataru*; Nemoto, Toshiyuki*; Kume, Etsuo; Adachi, Masaaki*; Kawasaki, Nobuo*; Yatake, Yoichi*
JAERI-Data/Code 2000-018, p.217 - 0, 2000/03
JAERI-Data-Code-2000-018.pdf:6.35MB
no abstracts in English
Nemoto, Toshiyuki*; Kawasaki, Nobuo*; Kume, Etsuo; Kawai, Wataru*; Adachi, Masaaki*; Ishizuki, Shigeru*; Yatake, Yoichi*; Ogasawara, Shinobu*
JAERI-Data/Code 2000-017, p.99 - 0, 2000/03
JAERI-Data-Code-2000-017.pdf:3.31MB
no abstracts in English
Yatake, Yoichi*; Adachi, Masaaki*; Kume, Etsuo; Kawai, Wataru*; Kawasaki, Nobuo*; Nemoto, Toshiyuki*; Ishizuki, Shigeru*; Ogasawara, Shinobu*
JAERI-Data/Code 2000-016, p.43 - 0, 2000/03
JAERI-Data-Code-2000-016.pdf:1.36MB
no abstracts in English