... makes the residual heat removal system have a better performance of the radiant heat exchanger. The weight of the optimized system is reduced by 16.53%. radiant heat exchanger heat transfer fins CFD Proceedings of the 2024 31st International Conference on Nuclear Engineering ICONE31 August 4...

... the advantage of quick prototyping with CFD modelling, 3D printer prototyping and half-scale airwater testing at room temperature and atmospheric pressure. The final design prototype will be confirmed with a test that is being planned in Hitachi Utility Steam Test LEading facility (HUSTLE) under nominal BWR...

...-phase formulations indicates that three-dimensional assessment using CFD is more realistic than similar calculations using system codes (e.g. RELAP5). The main feature of modelling decompression from a supercritical state to a subcritical state is the complexity of the transition through critical...

... lead. CFD benchmark multiphase flow bubble turbulent flow Proceedings of the 2024 31st International Conference on Nuclear Engineering ICONE31 August 4-8, 2024, Prague, Czech Republic ICONE31-135256 OPENFOAM-BASED BENCHMARKING SIMULATIONS OF XE GAS BEHAVIOR IN MOLTEN LEAD FOR ADVANCED FAST...

... a more profound comprehension of LBE behavior during natural circulation, this research leverages a Computational Fluid Dynamics (CFD) simulation program. This program theoretically models the circulation loop, while a one-dimensional code is employed to verify the model’s accuracy. The findings reveal...

... tests before criticality) or full heating pebble bed (full of fuel pebbles releasing fission or decay heat). Understandings on partial heating pebble bed are insufficient. Current paper uses the Computational Fluid Dynamics (CFD) to study the helium flow in partial heating pebble bed with mixed fuel...

... programmes, to system codes and CFD. With reference to some experimental data and predictions appeared in literature, an attentive discussion is carried out on the possible reasons for discrepancies between observations and predictions, aiming to contribute to clarify this open issue. Keywords: Supercritical...

... Accident (PLOFA), foreseen during the experimental campaign, investigating the safe cooling strategies for such kind of scenarios: in the considered case, the SG was used as decay heat removal system. The facility was represented using a coupled CFD/STH approach with an explicit time advancing scheme...

... Abstract The direct contact condensation heat transfer between the liquid film formed by the nozzle and the saturated steam is a complex process, and many experiments and simulations have been done by predecessors. In this study, CFD was used to calculate the heat and mass transfer process...

...Proceedings of the 2024 31st International Conference on Nuclear Engineering ICONE31 August 4-8, 2024, Prague, Czech Republic ICONE31-134682 CFD ANALYSIS OF A FOUR-LOOP PRESSURIZED WATER REACTOR WITH MULTIPLE OPERATING CONDITIONS Yizhi Tian College of Nuclear Science and Technology, Harbin...

... opposite cladding. The fuel meat temperature under the blister coverage area significantly increased. Further research revealed the effects of blister area, height, and number on plate fuel elements. blister narrow rectangular channel fuel plate subcooled boiling CFD Proceedings of the 2024...

... Abstract This article focuses on the phenomenon of complex water hammer that occurred during the testing period of the steam pipeline in a nuclear power plant. Computational fluid dynamics (CFD) techniques are utilized to simulate the transient behavior of condensation-induced water hammer...

... Abstract The composition of sodium cooled fast reactor fuel components is relatively simple, without too many complex structures. Therefore, it is necessary to carry out thermal hydraulic simulation of the entire core and large watershed. However, Due to the complexity of the existing CFD...

... Abstract A wire-wrapped fuel bundle of 19 rods using Lead-Bismuth Eutectic (LBE) as a coolant was chosen for this CFD study and the predictions are compared to the NACIE-UP benchmark experimental data. The k-ω SST turbulence model is used to investigate the heat transfer of the LBE together...

... hybrid nanofluid single-phase flow volume fraction CFD Proceedings of the 2024 31st International Conference on Nuclear Engineering ICONE31 August 4-8, 2024, Prague, Czech Republic ICONE31-135419 NUMERICAL INVESTIGATION OF CONVECTIVE HEAT TRANSFER PERFORMANCE OF HYBRID NANOFLUID FLOWING THROUGH...

... Fe concentration steam generator thermal performance fouling resistance CFD Proceedings of the 2024 31st International Conference on Nuclear Engineering ICONE31 August 4-8, 2024, Prague, Czech Republic ICONE31-135643 IMPACT OF TUBE FOULING ON STEAM GENERATOR PERFORMANCE USING A THERMAL...

... media stratified bed single/two-phase flow CFD numerical simulation Proceedings of the 2024 31st International Conference on Nuclear Engineering ICONE31 August 4-8, 2024, Prague, Czech Republic ICONE31-135388 NUMERICAL SIMULATION OF SINGLE/TWO-PHASE FLOW IN A STRATIFIED POROUS BED Aimad...

... to assess the available Computational Fluid Dynamics (CFD) based turbulence models. The current work aims to assess the newly developed advanced Reynolds-Averaged Navier-Stokes (RANS) models for predicting the heat transfer of supercritical fluids. In particular, the prediction capabilities of different...

... characteristics in the large open regions of the reactor vessel. In this paper, a coupled sub-channel/CFD multi-scale platform is developed through implementing the sub-channel code SACOS-PB to the CFD code FLUENT based on the domain decomposition and explicit numerical scheme. The flow field characteristics...

..., and studies the influence of geometric structural parameters on their natural frequency. Based on simplifying constraints at both ends of the spiral tube bundles to fixed support, the computational fluid dynamics (CFD) simulation was carried out to reveal the effect mechanism of support number, spiral radius...