Models for reactor physics calculations for HTR pebble bed modular reactors

An improved porous media approach to thermal–hydraulics analysis of high-temperature gas-cooled reactors

“…Helium exits wit average temperature of 700°C. Bernnat and Feltes (2003) calculated the power profile according to the benchmark definition using the ZIRKUS code.…”

“…But, in this work both Zehner and Schlünder and Quasi-homogeneous models with the capability of inter exchange are employed. Bernnat and Feltes (2003) calculated the energy profile under steady-state operation conditions and power density by the ZIR-KUS code.…”

“…THERMIX introduced by Julich research center in Germany is the mostly known and approved tool worldwide, from among various current thermo-hydraulic tools for HTRs design and safety analysis (Petersen, 1984). Also the nuclear energy and energy systems institute (IKE) employs a version of THERMIX (with some upgrades and wider applicability for various HTRs designs, accompanied by neutronics code system ZIRKUS) (Ben Said et al, 2006;Bernnat and Feltes, 2003). THERMIX is a code with two dimensions.…”

Porous media approach in thermohydraulic analysis of high temperature reactors in pressurized/depressurized cooldown: An improvement

“…A benchmark definition is employed to obtain the power density and the energy profile under steady-state operation conditions (Bernnat and Feltes, 2003).…”

“…Block fuel reactor: An IAEA CRP-3 (Kuzavkov, 1997) benchmark problem connected with the Gas Turbine Modular Helium Reactor was calculated (Bernnat and Feltes, 2003) in order to validate THPP potentials of simulating fuel reactors of the block type; furthermore, the related results were compared with those of other codes. Facing a 2D problem, some simplifications were applied to the benchmark definition.…”