Stochastic Geometry and Htgr Modeling with Mcnp5
نویسندگان
چکیده
The MCNP5 Monte Carlo code has been frequently used to model HTGRs with explicit geometric representation of fuel compacts or pebbles, including the microscopic fuel kernels within them. The random locations of fuel kernels within each fuel compact or pebble, and of pebbles within the core, however, present difficulties. A new, on-the-fly, stochastic geometry model for MCNP5 has been developed for modeling the random fuel kernels within the graphite matrix. This model is compared to both fixed lattices and multiple realizations of explicit random kernels. In addition, the effects of infinite vs. finite lattices on full-core geometries are investigated, including the effects of stochastic geometry modeling.
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