Radiation Transport in 3D Heterogeneous Materials: DNS

Conference · Wed Jul 09 00:00:00 EDT 2003

OSTI ID:15004850

Graziani, F

In order to develop a phenomenological approach to transport in 3D heterogeneous media, we have performed direct numerical simulation studies. Using an algorithm based on the lattice random walk to generate random media, we have performed radiographic shots of the sample and digitized both the chord length and optical depth distributions. The optical depth distribution is then used to compute an effective mean free path. As theory predicts, the atomically averaged mean free path is always a minimum value. We have also demonstrated a dependency of mean free path on the distribution of random material.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 15004850
• Report Number(s): UCRL-JC-153242; TRN: US0305185
• Resource Relation: Conference: American Nuclear Society Winter Meeting, New Orleans, LA (US), 11/16/2003--11/20/2003; Other Information: PBD: 9 Jul 2003
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
ALGORITHMS
DEPTH
DISTRIBUTION
MEAN FREE PATH
RADIATION TRANSPORT
SIMULATION
SPATIAL DISTRIBUTION
TRANSPORT