Article
Chemistry, Applied
Yulong Zhu, Feng Zhang, Liping Xing, Weilun Xie, Yunfei Cheng
Summary: The thermal protection process of intumescent coatings was studied using a cone calorimeter. A detailed heat transfer model was presented and the thermal properties of the coating were measured and fitted into the model. The simulation results were in good agreement with the experimental results, indicating that the model can predict the intumescent behavior of the coating in a fire.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Materials Science, Multidisciplinary
Seon-Chil Kim, Sukwon Youn
Summary: The use of easily accessible shielding suits by flight attendants for personal defense against occupational cosmic radiation exposure is gaining attention. This study compares the shielding performance of a general sheet and a nanofiber shielding sheet, and verifies the effectiveness of the nanofiber shielding sheet under aircraft conditions through Monte Carlo simulation.
FRONTIERS IN MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Muzhang Huang, Jia Liang, Peng Zhang, Yi Li, Yi Han, Zesheng Yang, Wei Pan, Chunlei Wan
Summary: Opaque thermal barrier materials play a crucial role in shielding turbine blades from thermal radiation. Conventional thermal barrier coating materials are translucent to thermal radiation and cannot protect the blades in high-temperature environments. In this study, an absorptive second phase is incorporated into the translucent material, making it opaque to thermal radiation and effectively controlling the rise of thermal conductivity at high temperatures. The lattice thermal conductivity and mechanical properties remain largely unchanged. The small polaron mechanism is identified as the key to achieving high absorption coefficient for near-infrared radiation. The findings suggest a powerful strategy for designing thermal radiation-shielding TBCs by introducing minor second-phase particles with high-absorption mechanisms such as polaron excitation.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Thermodynamics
Penghui Zhang, Ronghua Chen, Wenxi Tian, Suizheng Qiu
Summary: This study conducted falling film experiments on a horizontal plain copper tube to investigate the dry-out process and measure the liquid coverage rate and heat transfer coefficient. The results showed that the boiling heat transfer coefficient in falling film condition was approximately 10% higher than that in pool boiling condition, which was attributed to the different bubble departure and growth environment. Furthermore, a general falling film heat transfer model was developed and validated with experimental data, which can accurately predict falling film heat transfer under various conditions.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Chaomeng Chen, Shu Yang, Minqiang Pan
Summary: This paper optimized the microchannel element and microchannel array structure of a plate heat exchanger based on the configuration theory of maximum heat transfer efficiency and minimum flow resistance, and the experimental results showed that the optimized structure has the best comprehensive heat and mass transfer performance, with a comprehensive efficiency up to 2.81 times of the comparison structures.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Engineering, Chemical
Siqi Zhao, Shuyang Wang, Haizhen Ding, Zhenqi Guo, Mthokozisi B. C. Simelane, Qiang Liu, Tingting Tao, Liping Guo, Le Chang, Chao Ding
Summary: A novel infrared radiation (IR) peeling method was developed as an alternative to conventional methods for peeling potatoes. A numerical model was developed and solved to predict the temperature distribution in potatoes subjected to different heating times. The model adequately described the heat transfer process during IR peeling, indicating insubstantial damage to the integrity of potato flesh. The results serve as a theoretical basis for the application of IR in peeling potatoes or other vegetables.
JOURNAL OF FOOD ENGINEERING
(2023)
Review
Construction & Building Technology
Balamurali Kanagaraj, N. Anand, Diana Andrushia, M. Z. Naser
Summary: This article provides a detailed study of different RSC materials suitable for radiation shielding and evaluates their shielding performance, hardening characteristics, and serviceability. It also comprehensively reviews the potential of RSC as an innovative building material for radiation protection and highlights current knowledge gaps and future research directions in this field.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Thermodynamics
Junjun Guo, Lingqi Shen, Xiaoyi He, Zhaohui Liu, Hong G. Im
Summary: The study evaluates the weighted sum of gray gases (WSGG) models for turbulent jet diffusion flame simulations, showing that the model based on mixture modeling provides good prediction accuracy with lower computational cost. The combination of mixture modeling with non-gray soot radiative property model offers the best accuracy for gas-soot mixture.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Mechanics
Rizwan Ul Haq, Tabinda Sajjad, Muhammad Usman, Anum Naseem
Summary: This article presents a study on mixed convection in the presence of a magnetic field near an oblique stagnation point in micropolar nanofluid. Similarity transformations are used to convert the governing partial differential equations into non-linear ordinary differential equations, which are then solved using the modified Chebyshev collocation method. The accuracy of the method is demonstrated by comparing the numerical results with those obtained using the finite difference method. The study provides graphical results for velocity components, microrotation, temperature, and flow patterns, and calculates numerical values for various parameters such as the free parameter, skin friction, and Nusselt numbers. The findings reveal that the microrotation profiles are influenced by the stretching effect and the angle of strike, while the temperature of the micropolar nanofluid is affected by the magnetic parameter and micropolar coefficient. The temperature gradient of the nanofluid decreases with increasing values of the stretching parameter and the angle of strike.
Article
Engineering, Chemical
Yanfeng Zhao, Jinghong Ning, Zhaoyang Sun
Summary: This study proposes a quick-freezing model and heat transfer model for quick-freezing strawberries using dry ice at different flow speeds. The models ensure the quality of quick-frozen strawberries and control the amount of dry ice used. The study investigates the temperature changes during the process of quick-freezing strawberries by jetting dry ice. The results show that the proposed models have high universality and precision, and can be used to analyze temperature changes during dry ice jetting-based quick-freezing of strawberries. The quality of quick-frozen strawberries before and after dry ice jetting was found to be better than the standard quality. The research results can provide guidance for the development of energy-saving and environmental dry ice jetting-based quick-freezing equipment.
JOURNAL OF FOOD PROCESS ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Haipeng Liao, Wenxu Zhang, Xuyan Li, Kai Pei, Sanbao Lin, Jiyu Tian, Zhenmin Wang
Summary: Based on fluid mechanics and electromagnetic theory, a numerical simulation model was developed to investigate the droplet transfer process in local dry underwater MIG welding (LDU-MIG) of SUS304. The effects of gas pressure, wire feeding speed, and pulse peak current on the transfer process were simulated and analyzed. The simulation results were in good agreement with experimental results, validating the accuracy and feasibility of the simulation model.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Energy & Fuels
Yi Ran Lu, Petr A. Nikrityuk
Summary: This study verifies a new 0D model for the steam reforming of methane inside a spherical catalyst particle in a hot methane/steam atmosphere. The model accurately predicts the reaction outcomes for different particle diameters and ambient temperatures.
Article
Chemistry, Physical
M. H. Pacheco, M. S. Gibin, M. A. Silva, G. Montagnini, R. C. Viscovini, A. Steimacher, F. Pedrochi, V. S. Zanuto, R. F. Muniz
Summary: This study investigates a low-cost, high-transparency silicate glass reinforced with barium oxide for its physical properties and radiation shielding capability. The glass's network structures were analyzed, confirming its glass nature and the depolymerization caused by the inclusion of BaO. The glass transition temperature increased with increasing BaO content, while the optical bandgap also increased. The addition of BaO resulted in a more compact network structure and increased mass attenuation coefficient, indicating improved radiation shielding effectiveness.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Multidisciplinary Sciences
Ahmad Banji Jafar, Sharidan Shafie, Imran Ullah, Rabia Safdar, Wasim Jamshed, Amjad Ali Pasha, Mustafa Mutiur Rahman, Syed M. Hussain, Aysha Rehman, El Sayed M. Tag El Din, Mohamed R. Eid
Summary: In this paper, the hydromagnetic mixed convection flow of viscoelastic fluid caused by a vertical stretched surface is studied. Numerical simulations and graphical portrayals are conducted to investigate the influence and characteristic behaviors of physical parameters on the velocity field and temperature distributions. The results show that the applied magnetic parameter improves the temperature distribution of the viscoelastic fluid and reduces the temperature gradient at the border. The temperature distribution and thermal layer are improved due to radiative and viscous dissipation characteristics. Additionally, higher velocities are observed in the viscoelastic fluid compared to the Newtonian fluid.
SCIENTIFIC REPORTS
(2022)
Article
Thermodynamics
Xiao Yang, Peng Chen
Summary: This paper focuses on the enhancement of cutting heat transfer in dry hobbing, a completely different process from conventional turning and milling. By analyzing the generation and transfer process of cutting heat, the dominant heat carrier is identified and factors affecting its heat exchange capacity are investigated. Heat transfer enhancement strategies are proposed, showing potential applications in reducing thermal deformation and improving machining quality in dry hobbing.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Chemistry, Inorganic & Nuclear
Jinlin Song, Pin Gong, Peng Wang, Jinzhao Zhang, Zhimeng Hu, Cheng Zhou, Xiaoxiang Zhu, Qing Wei, Jian Zhou, Xiaobin Tang
Summary: Research on unmanned online monitoring equipment for marine radioactivity surrounding nuclear power plants is of great significance. In this work, a small radioactivity monitoring system based on buoy was designed and manufactured for the emergency situation of nuclear accidents. The core of the system is the underwater gamma spectrometer, which can respond to gamma rays from 60 keV to 3 MeV and identify the nuclides within this energy range. The system's stability and radioactivity monitoring capabilities have been verified through experiments conducted in the seawater around the Tianwan Nuclear Power Plant in Lianyungang, China.
APPLIED RADIATION AND ISOTOPES
(2023)
Article
Polymer Science
Yuehao Rui, Feida Chen, Minghao Zhao, Jing Zhong, Yong Li, Xiaobin Tang
Summary: This work presents a novel microcapsule and its resin-based composites with self-healing ability and gamma radiation shielding ability. The microcapsules are developed through self-assembly and precipitation methods, and they are incorporated into the resin matrix to improve fracture toughness and self-healing efficiency. The composites also exhibit good gamma radiation shielding properties.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Sheng Zhao, Changran Geng, Chang Guo, Feng Tian, Xiaobin Tang
Summary: The purpose of this study is to create a self-attention network for directly translating MRI to synthetic CT images with lower inaccuracy at the skin edge, and examine the viability of MR-guided BNCT. Retrospective analysis on 104 patients with brain malignancies showed that the self-attention ResUNet (SARU) reduced the mean absolute error compared to previous methods. The skin dose error from SARU was significantly lower than other methods.
Article
Thermodynamics
Chenhao Yang, Nailiang Zhuang, Hangbin Zhao, Xiaobin Tang
Summary: A dynamic system model of a lunar surface nuclear power system combined with a Stirling cycle was proposed and simulated under various conditions. The study found that thermal power variations have a nonlinear delay effect on the dynamic system model, and lunar surface temperature significantly impacts the system's operation and response. This research provides a practical tool for transient analysis of lunar surface nuclear reactor power systems and theoretical support for the design of such reactors.
APPLIED THERMAL ENGINEERING
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Xing Di, Changran Geng, Chang Guo, Yufen Shang, Hongtao Fu, Haonan Han, Xiaobin Tang
Summary: This study proposes a novel carbon quantum dot (cQD) sheeting to adjust the wavelength of Cherenkov emission and increase the optical signal. By combining a specific filter, the sheeting can be used for in vivo monitoring of the surface beam profile on patients with ambient light. Experimental results show that the cQD sheeting significantly improves the light intensity and SNR of optical images, and enables obtaining high SNR optical images in the presence of ambient light.
Article
Radiology, Nuclear Medicine & Medical Imaging
Feng Tian, Sheng Zhao, Changran Geng, Chang Guo, Renyao Wu, Xiaobin Tang
Summary: This study proposes a neural network-based dose prediction method for boron neutron capture therapy (BNCT) to rapidly and accurately acquire the three-dimensional therapeutic dose distribution for patients with glioblastoma, addressing the time-consuming issue in BNCT dose calculation. The results demonstrate that the method can significantly reduce the calculation time while ensuring the accuracy of the predicted three-dimensional therapeutic dose-effect.
Article
Materials Science, Multidisciplinary
Sheng Lai, Yunpeng Liu, Junxu Mu, Zhaopeng Feng, Kai Miao, Xiaobin Tang
Summary: In this study, we constructed a triode structure of carbon nanotube (CNT) cold cathode X-ray source driven by pulse voltage in a dynamic vacuum system. The results indicated that the grid voltage and pulse width had an impact on the amplitude, delay time, and relative pulse spread of the X-ray. The research revealed the ultra-short pulse emission characteristics and influencing factors of the CNT cold cathode X-ray source, thereby promoting its development in pulse applications.
Article
Nuclear Science & Technology
Yiqi Zhao, Yongnian Song, Nailiang Zhuang, Hangbin Zhao, Xiaobin Tang
Summary: Efficient and lightweight space radiation cooling system is a key research direction for the future. This study proposes an improvement idea of adding various types of surface microstructures to traditional plate radiation fins to enhance the radiant heat flow rate per unit mass. The optimal parameter arrangement is obtained through simulations and the mechanism is revealed from the perspectives of thermal conductivity and radiation heat dissipation.
ANNALS OF NUCLEAR ENERGY
(2023)
Article
Engineering, Electrical & Electronic
Kai Meng, Pin Gong, Dajian Liang, Zeyu Wang, Zhimeng Hu, Peng Wang, Cheng Zhou, Xiaoxiang Zhu, Xiaobin Tang
Summary: An irradiated photoelectric neural network based on a pixelated radiation detector is proposed for high-speed real-time X-ray image recognition in this article. By analyzing the output signals of a SiPM array, an X-ray image can be recognized in real-time without involving complicated digital circuits and signal processing. The feasibility of the method was verified through experiments, achieving an X-ray image recognition speed of 500,000 frames/s. The simplicity and innovation of this detector fully demonstrate its future application prospects.
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
(2023)
Article
Optics
Yuhang He, Zhiheng Xu, Hongyu Wang, Mingxin Bian, Yunpeng Liu, Xiaobin Tang
Summary: Radioluminescent nuclear battery, a small power device based on radioluminescence, provides stable energy supply for equipment in extreme environments. However, weak radioluminescence intensity has limited its development. This work proposes a method of adding SiO2 nanosphere coating to enhance the radioluminescent intensity and improve the output performance of the battery. The SiO2 nanosphere coating promotes the radiative transition rate and quantum efficiency of the ZnS:Cu phosphor, resulting in a 62.32% increase in radioluminescent intensity and a 51.59% enhancement in maximum output power of the battery under the same X-ray excitation condition.
JOURNAL OF LUMINESCENCE
(2023)
Article
Nuclear Science & Technology
Ren-Yao Wu, Chang-Ran Geng, Feng Tian, Zhi-Yang Yao, Chun-Hui Gong, Hao-Nan Han, Jian-Feng Xu, Yong-Shun Xiao, Xiao-Bin Tang
Summary: In this study, a novel and fast three-dimensional reconstruction method for a Compton camera was proposed and analyzed. The CSS-BP-SC method can quickly perform the back-projection process of the Compton cone and can be used to precompute the LM-MLEM. The results showed that the proposed method can obtain imaging results comparable to those of the traditional reconstruction algorithm while significantly increasing the speed.
NUCLEAR SCIENCE AND TECHNIQUES
(2023)
Article
Engineering, Electrical & Electronic
Sheng Lai, Yunpeng Liu, Shuang Hang, Junxu Mu, Xiaobin Tang
Summary: This work proposes a pulse amplitude modulation with four-level (PAM-4) signal loading scheme based on carbon nanotube (CNT) cold cathode X-ray source for X-ray communication (XCOM). The relationship between X-ray waveforms and amplitude characteristics under this scheme is studied, and the XCOM performance is evaluated. Results indicate that the amplitude difference of each level of X-ray waveforms is obvious and corresponds well with the input signal amplitude. The PAM-4 loading scheme shows stability and feasibility, with significant effects on the bit error rate (BER) when the pulse frequency increases.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Chemistry, Physical
Shifan Zhu, Zhiheng Xu, Feida Chen, Haijun Tao, Xiaobin Tang, Yuqiao Wang
Summary: The dynamic process of electrodeposition at the interface of planar microelectrodes is visualized and analyzed through finite element simulation, revealing the vertical potential distribution and optimizing the deposition of nickel cobalt layered double hydroxides. The assembled flexible quasi-solid microsupercapacitors show high energy density and long-term cycling stability.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Engineering, Biomedical
Yang Han, Changran Geng, Yuanhao Liu, Renyao Wu, Mingzhu Li, Chenxi Yu, Saverio Altieri, Xiaobin Tang
Summary: This study aimed to quantify the relative biological effectiveness (RBE) of compound particles (alpha and lithium) in boron neutron capture therapy (BNCT) and calculate DNA damage. The results showed that DNA damage induced by compound particles increased as the cell radius decreased, and the impact of boron concentration on RBE diminished beyond a certain threshold.
PHYSICS IN MEDICINE AND BIOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Shifan Zhu, Lili Song, Zhiheng Xu, Feida Chen, Haijun Tao, Xiaobin Tang, Yuqiao Wang
Summary: This paper reviews the progress in using theoretical design and experimental verification to develop catalysts with high activity, low cost, and long-term life. The three typical oxygen evolution catalytic mechanisms and the commonly used tools and descriptors in theory as well as electrochemical techniques and characterizations in experiments are discussed. The strategy of combining theoretical design and experimental verification can shed light on the design, preparation, and application of advanced OER catalysts.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Nuclear Science & Technology
Orestes Castillo-Hernandez, P. E. Manuel Perdomo-Ojeda, C. R. Grantom, Pamela F. Nelson
Summary: Incorporating specified safety and production targets during the design phase can reduce costs and enhance the competitiveness of nuclear power plants. This paper presents two methods for proposing unavailability targets for nuclear reactor systems to optimize the design features. The methods are applied to a hypothetical facility, providing a basis for future work on estimating design alternatives affecting unavailabilities.
NUCLEAR ENGINEERING AND DESIGN
(2024)
Article
Nuclear Science & Technology
Qinjun Fu, Andre Bergeron, Philippe Fillion, Yohan Davit, Michel Quintard
Summary: In normal operating conditions, the flow within a pressurized water reactor (PWR) core primarily moves in the axial direction along the fuel rods. However, in accidents situations, transverse flows can have a significant impact on the thermal-hydraulic properties of the core. This study develops macroscopic pressure drop models for different flow directions and Reynolds numbers and validates them by comparing with existing system code results.
NUCLEAR ENGINEERING AND DESIGN
(2024)
Article
Nuclear Science & Technology
Xiang Chai, Xinyue Liu, Chaoran Guan, Tengfei Zhang, Xiaojing Liu
Summary: Micro nuclear reactors have gained attention for their high efficiency and long lifetime, making them suitable for remote and off-grid locations. This study examines the effects of burnable poisons on the performance of a micro nuclear reactor and improves the design for reactivity control. The computational results show that burnable poisons reduce excess reactivity and power peaking factor without significant impact on core lifetime.
NUCLEAR ENGINEERING AND DESIGN
(2024)
Article
Nuclear Science & Technology
Liwei Chen, Cong Zhou, Yu Wang, Yiran Zong, Tingting Lu, Chunhua Chen
Summary: This paper proposes an autonomous search method for leakage sources in nuclear emergency rescue based on the updated Infotaxis method. By considering factors such as radioactive decay and wet deposition, the method improves search efficiency and accuracy. Experimental results show that the method is particularly effective in searching for leakage sources under high emission rates and provides scientific information for early emergency response and consequence assessment.
NUCLEAR ENGINEERING AND DESIGN
(2024)
Article
Nuclear Science & Technology
Kirill S. Dolganov
Summary: This paper is the first part of a summary overview of IBRAE's work on the severe accident at Unit 1 of Fukushima Daiichi Nuclear Power Station. It focuses on the integral model of Unit 1 and its qualification with available data, including the comparison of simulation results with measurements for the initial phase of the accident. Important issues discussed include the direct modeling of isolation condenser performance and verification of the possibility to use an integral approach to estimate the nuclide inventory in the core.
NUCLEAR ENGINEERING AND DESIGN
(2024)
Article
Nuclear Science & Technology
F. Feria, C. Aguado, J. Benavides, J. Benavides, R. Canencia-Hernanz, M. Cristobal-Beneyto, J. Fernandez Garcia, H. Galan, C. Gonzalez, A. Hernandez-Avellaneda, L. E. Herranz, G. Jimenez, L. Martinez, J. C. Martinez-Murillo, A. Milena-Perez, A. Palacio Alonso, J. Penalva, R. Plaza, D. Perez-Gallego, L. Rey, N. Rodriguez-Villagra, J. Ruiz-Hervias, J. Saiz de Omenaca Tijero, P. Vinas-Pena
Summary: The Spanish R&D efforts in dry interim storage of spent nuclear fuel mainly focus on supporting safety under storage and transportation. Experimental and modelling activities are carried out to understand and predict the fuel response, with major outcomes being improvements in the characterization of dry stored fuel, essential for safety assessment of the back-end fuel cycle.
NUCLEAR ENGINEERING AND DESIGN
(2024)
Article
Nuclear Science & Technology
Ang Li, Yuqing Chen, Yuxian Rao, Qi Cai, Cong Wang
Summary: This paper focuses on the boiling heat transfer model of mini-channels casing-pipes once-through steam generator (MCOTSG). By calibrating and analyzing the different nucleate boiling heat transfer models based on steady state experimental results, the secondary loop heat transfer characteristics and overall operating characteristics of OTSG under feedwater flow rate reduction are simulated. The results can provide a basis for the safety analysis and optimal design of MCOTSG and small modular reactor under low flow rate conditions.
NUCLEAR ENGINEERING AND DESIGN
(2024)
Article
Nuclear Science & Technology
Shu Soma, Masahiro Ishigaki, Satoshi Abe, Yasuteru Sibamoto
Summary: In this paper, the analytical wall function approach was applied to analyze the condensation flow of steam/air mixtures, and good predictions were obtained through CFD analysis.
NUCLEAR ENGINEERING AND DESIGN
(2024)
Article
Nuclear Science & Technology
Jinho Song, Sungjoong Kim
Summary: In this study, a machine learning platform is proposed to assist operators in diagnosing the progression of severe accidents and predicting key parameters using long short term memory networks and MELCOR simulation data. The platform shows reasonable accuracy in predicting both similar and unseen test data, as well as lost signals and key parameters for accident management.
NUCLEAR ENGINEERING AND DESIGN
(2024)
Article
Nuclear Science & Technology
Liang Zhao, Zhengbai Chang, Chulin Mai, Hong Ran, Jin Jiang
Summary: This study investigates the dynamic characteristics, valve disc motion, and flow field of a nozzle check valve under different spring stiffness and fluid deceleration rates. Experimental tests and numerical simulations were performed to analyze the effects on various parameters during the dynamic closing process of the valve. The results provide insights for the optimization design of check valves and more accurate calculation of their dynamic characteristic curves.
NUCLEAR ENGINEERING AND DESIGN
(2024)
Article
Nuclear Science & Technology
Xun Lan, Yanbo Jiang, Dan Sun, Wenbo Liu, Wenjie Li
Summary: In this study, a three-dimensional phase-field model was developed to investigate the evolution of intergranular bubbles during irradiation. The study examined the dependency of bubble percolation on bubble shape, fission rate, and average grain size. The simulation results revealed the significant effects of these factors on the shape of GB bubbles, the percolation rate, and the connectivity threshold of GB bubbles.
NUCLEAR ENGINEERING AND DESIGN
(2024)
Article
Nuclear Science & Technology
J. M. S. Mendes, A. Heimlich, A. M. M. De Lima, F. C. Silva
Summary: An algorithm for solving the constitutive equations of the fourth-order Nodal Expansion Method (NEM) in parallel using GPU with quadratic transverse leakage has been proposed. The algorithm, implemented in CUDA language, showed comparable accuracy and reduced execution time compared to the CNFR code. This algorithm and the developed program have potential use in the optimization process of nuclear fuel reload patterns.
NUCLEAR ENGINEERING AND DESIGN
(2024)
Article
Nuclear Science & Technology
M. Jafari, H. Jafari, M. H. Choopan Dastjerdi, J. Mokhtari
Summary: This study investigates the ability of the PGNAA facility of the Isfahan MNSR reactor to measure boron concentration in solution samples. A measurement system model is developed using Monte Carlo calculation, and a cadmium sheet is used to reduce the effect of boron in the shield. The accuracy of the model is verified through experimental tests, resulting in a calibration curve.
NUCLEAR ENGINEERING AND DESIGN
(2024)
Article
Nuclear Science & Technology
Ibrahim Gad-el-Hak, Njuki Mureithi, Kostas Karazis, Brian Painter
Summary: This study investigates the risk of fluidelastic instability induced by degraded baffle-former bolts in a nuclear fuel assembly. Experimental results show that the stability threshold of the mock-up array strongly depends on the relative position of the jet flow with respect to the array centerline, and axial flow velocity also has a significant effect on the jet-induced instability.
NUCLEAR ENGINEERING AND DESIGN
(2024)
Article
Nuclear Science & Technology
Yuhang Niu, Scolaro Alessandro, Carlo Fiorina, Hao Qin, Gauthier Lazare, Yingwei Wu, Wenxi Tian, G. H. Su
Summary: This paper presents the incorporation of DNB prediction into the GeN-Foam code, which is based on OpenFOAM. The accuracy of GeN-Foam in modeling DNB conditions in PWR was assessed through validation against experimental data and other codes. The results show that GeN-Foam exhibits good performance in simulating two-phase flow boiling conditions and accurately predicts the occurrence of DNB.
NUCLEAR ENGINEERING AND DESIGN
(2024)
