Results 31 to 40 of about 362 (143)

Improved Radiation Heat Transfer Model in RELAP5 for Compact Fuel Rod Bundles by the Absorption Factor Modification

open access: yesFrontiers in Energy Research, 2022
Simulations of radiation heat transfer in fuel rod bundles are necessary for the thermal hydraulic design and safety analysis of open lattice gas-cooled reactors, which always operate at high temperatures.
Qian Sun, Yu Ji, Jun Sun
doaj   +1 more source

Prediction of Flow Regimes and Thermal Hydraulic Parameters in Two-Phase Natural Circulation by RELAP5 and TRACE Codes

open access: yesScience and Technology of Nuclear Installations, 2015
In earlier study we have demonstrated that RELAP5 can predict flow instability parameters (flow rate, oscillation period, temperature, and pressure) in single channel tests in CIRCUS-IV facility. The main goals of this work are to (i) validate RELAP5 and
Viet-Anh Phung, Pavel Kudinov
doaj   +1 more source

A study of the dispersed flow interfacial heat transfer model of RELAP5/MOD2.5 and RELAP5/MOD3

open access: yes, 1995
The model of interfacial heat transfer for the dispersed flow regime used in the RELAP5 computer codes is investigated in the present paper. Short-transient calculations of two low flooding rate tube reflooding experiments have been performed, where the hydraulic conditions and the heat input to the vapour in the post-dryout region were controlled for ...
Andreani, M, Analytis, G T, Aksan, S N
openaire   +4 more sources

Development and analysis of passive residual heat-removal system on secondary side of small reactor

open access: yesHe jishu
BackgroundPassive residual heat-removal system (PRHRS) based on natural circulation has been widely used in small reactors connected on secondary side loop.PurposeThis study aims to develop and analyze a passive residual heat-removal system on the ...
DONG Botong   +7 more
doaj   +1 more source

Burn-up dependent steady-state thermal hydraulic analysis of Pakistan research reactor-1 [PDF]

open access: yesNuclear Technology and Radiation Protection, 2011
The burn-up dependent steady-state thermal hydraulic analysis of Pakistan research reactor-1, reference operating core, has been carried out utilizing standard computer codes WIMS/D4, CITATION, and RELAP5/MOD3.4.
Muhammad Atta   +2 more
doaj   +1 more source

RELAP5 Calculations of Bethsy 9.1b Test

open access: yesScience and Technology of Nuclear Installations, 2012
Recently, several advanced computational tools for simulating reactor system behavior during real and hypothetical transient scenarios were developed.
Andrej Prošek
doaj   +1 more source

Analysis With Different Containment Models for Containment Response of NHR200II Under Loss‐of‐Coolant Accident

open access: yesScience and Technology of Nuclear Installations, Volume 2026, Issue 1, 2026.
In the design of nuclear power plant systems, the thermal–hydraulic response in the containment during a loss‐of‐coolant accident (LOCA) plays a crucial role. In this study, the advanced small modular reactor NHR200‐II is selected as the research object.
Yan Wang   +3 more
wiley   +1 more source

SCDAP/RELAP5 independent peer review [PDF]

open access: yes, 1993
The SCDAP/RELAP5 code has been developed for best-estimate transient simulation of light-water-reactor coolant systems during severe accidents. The newest version of the code is SCDAP/RELAP5/MOD3. The US Nuclear Regulatory Commission (NRC) decided that there was a need for a broad technical review of the code by recognized experts to determine overall ...
Corradini, M. L.   +7 more
openaire   +5 more sources

Assessment of RELAP/SCDAPSIM/MOD3.4 Prediction Capability with Severe Fuel Damage Scoping Test

open access: yesScience and Technology of Nuclear Installations, 2017
The Power Burst Facility (PBF) was designed to provide experimental data to determine the thresholds for failure during accident conditions. Thus, the PBF benchmark using severe accidental analysis codes is essential to designing reactor for current ...
Noppawan Rattanadecho   +4 more
doaj   +1 more source

Thermal-hydraulic analysis of VVER-1000 residual heat removal system using RELAP5 code, an evaluation at the boundary of reactor repair mode

open access: yesAlexandria Engineering Journal, 2018
Removing the residual heat from a nuclear reactor is an important safety aspect of thermal hydraulic analysis. In this study, a typical VVER-1000 reactor residual heat removal system has been evaluated using RELAP5 thermal hydraulic loop code during cool-
Z. Tabadar   +3 more
doaj   +1 more source

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