Nuclear Engineering and Technology最新文献_第3页

Study on thermal expansion reactivity of CEFR control rod drive mechanism CEFR控制棒驱动机构热膨胀反应性研究

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-04-07 DOI: 10.1016/j.net.2025.103629

Bian Xinyuan, Ke Guotu, Zhang Jian

引用次数: 0

A coordinated control strategy for forced–natural circulation inter-switching process of integral pressurized water reactor 整体式压水反应堆强制-自然循环切换过程的协调控制策略

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-04-07 DOI: 10.1016/j.net.2025.103628

Shifa Wu, Jiashuang Wan, Pengfei Wang

引用次数: 0

3D pose estimation of workers in complex radioactive environments using a single RGB-D camera 使用单个RGB-D相机对复杂放射性环境中的工人进行三维姿态估计

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-04-07 DOI: 10.1016/j.net.2025.103631

Janghee Lee , Woosung Cho , Seungsoo Jang , Minjae Lee , Sung-Gyun Shin , Sangsoo Han , HangJin Jo , SongHyun Kim

{"title":"3D pose estimation of workers in complex radioactive environments using a single RGB-D camera","authors":"Janghee Lee , Woosung Cho , Seungsoo Jang , Minjae Lee , Sung-Gyun Shin , Sangsoo Han , HangJin Jo , SongHyun Kim","doi":"10.1016/j.net.2025.103631","DOIUrl":"10.1016/j.net.2025.103631","url":null,"abstract":"<div><div>Accurate 3D Human Pose Estimation (3DHPE) is necessary for computational dosimetry of workers near radioactive sources, but existing frameworks have difficulty dealing with single-view configuration due to heavily occluded environments in multiple camera views. Here, a 3DHPE framework is proposed that utilizes a single RGB-D (Red, Green, Blue, and Depth) camera. First, 3D poses relative to the body root are estimated by employing ground plane detection, after which the position of the body root is determined by matching key points of the 3D pose within a voxelized point cloud reconstructed from depth images. In experiments, the proposed framework achieved a 22.7 % reduction in the mean per joint position error and a 29.2 % error reduction for the wrists when applied to a challenging dataset featuring substantial occlusions from interventional radiology equipment and other workers. The proposed framework demonstrated comparable positioning accuracy as state-of-the-art techniques without requiring the collection of actual 3D pose data. It can be utilized as a supplementary tool for reducing uncertainty in computational dosimetry and optimizing the workflow in medical settings.</div></div>","PeriodicalId":19272,"journal":{"name":"Nuclear Engineering and Technology","volume":"57 9","pages":"Article 103631"},"PeriodicalIF":2.6,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143838195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dosimetric properties of calcium phosphate tablets prepared by spark plasma sintering method 火花等离子烧结法制备磷酸钙片的剂量学性能

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-04-06 DOI: 10.1016/j.net.2025.103632

Hora Kavarian , S. Farhad Masoudi , Hamideh Daneshvar

{"title":"Dosimetric properties of calcium phosphate tablets prepared by spark plasma sintering method","authors":"Hora Kavarian , S. Farhad Masoudi , Hamideh Daneshvar","doi":"10.1016/j.net.2025.103632","DOIUrl":"10.1016/j.net.2025.103632","url":null,"abstract":"<div><div>Considering the importance of having a suitable dosimeter to measure the dose in the range of 10–1000 Gy, the dosimetry response of calcium phosphate, as a thermoluminescent dosimeter, was investigated. In addition to studying the dosimetric response of the samples in powder shapes, the tablet forms of the samples produced by compressing the powders with the spark plasma sintering method at 650 °C and 685 °C and 40 MPa were also examined. The findings indicate that most samples exhibit a linear response within the desired dose range and have a good response to dose changes. The average glow peak temperature ranged from 195 to 235 °C. The weakness of the samples was their fading effects; thus, most samples lost their effectiveness within 30 days.</div><div>While the results indicate that the synthesized β-TCP calcium phosphate tablets compressed at 650 °C and 40 MPa show the best dose response among the samples studied, a comparison between the dosimetric responses of powder and tablet forms reveals that the tablet preparation conditions are crucial, and converting powder into tablets does not necessarily yield improved dosimetric outcomes.</div></div>","PeriodicalId":19272,"journal":{"name":"Nuclear Engineering and Technology","volume":"57 9","pages":"Article 103632"},"PeriodicalIF":2.6,"publicationDate":"2025-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143833412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of DeepONet to predict transient drop motion of the control rod in real-time 应用DeepONet实时预测控制杆的瞬态下落运动

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-04-04 DOI: 10.1016/j.net.2025.103620

Dae-Guen Lim , Gil-Yong Lee , Yong-Hwa Park

{"title":"Application of DeepONet to predict transient drop motion of the control rod in real-time","authors":"Dae-Guen Lim , Gil-Yong Lee , Yong-Hwa Park","doi":"10.1016/j.net.2025.103620","DOIUrl":"10.1016/j.net.2025.103620","url":null,"abstract":"<div><div>This paper proposes a surrogate model using a deep operator neural network (DeepONet) to predict transient drop motion of CR in real-time. The DeepONet model is trained using synthetic data obtained from the experimentally verified flexible multibody dynamic model, which considers large deformation, fluid-structure interaction, and friction. In the DeepONet architecture, the branch network processes the deformation profile of the fuel assembly (FA), while the trunk network handles the three actuator strokes as structural parameters along with time, enabling the model to predict the displacement and velocity of the CR. The accuracy of DeepONet is evaluated by calculating the mean absolute error of the normalized output, and the model's efficiency is assessed by comparing the computational time of the flexible multibody dynamics model with that of the DeepONet. Validation results demonstrate strong agreement between the DeepONet predictions and those of the flexible multibody dynamics model, achieving 99.39 % accuracy for displacement and 98.72 % accuracy for velocity under various FA deformations. Furthermore, the DeepONet provides a computational speedup of over 1500 times, with average prediction times of 321.4 ms. The proposed surrogate model offers a reliable solution for predicting CR drop motion with high accuracy and computational efficiency, enhancing nuclear reactor safety.</div></div>","PeriodicalId":19272,"journal":{"name":"Nuclear Engineering and Technology","volume":"57 9","pages":"Article 103620"},"PeriodicalIF":2.6,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143828647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electric double layer and thermal radiation effects on micropolar blood particles conveying Cu-MoS2-CuO nanoparticles in squeezed arterial channel 电双层和热辐射对挤压动脉通道中输送Cu-MoS2-CuO纳米颗粒的微极血颗粒的影响

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-04-03 DOI: 10.1016/j.net.2025.103604

A.M. Obalalu , Umair Khan , Mehboob Ul Hassan , Muhammad Waqas , A.D. Adeshola , Latif Ahmad

{"title":"Electric double layer and thermal radiation effects on micropolar blood particles conveying Cu-MoS2-CuO nanoparticles in squeezed arterial channel","authors":"A.M. Obalalu , Umair Khan , Mehboob Ul Hassan , Muhammad Waqas , A.D. Adeshola , Latif Ahmad","doi":"10.1016/j.net.2025.103604","DOIUrl":"10.1016/j.net.2025.103604","url":null,"abstract":"<div><div>The rotational motion of the blood particles in the squeezed arterial channel is important for advancing biomedical applications such as targeted drug delivery and diagnostic devices. In the present framework, we study the rotational motion of the blood particles and electric double layer (EDL) flow containing molybdenum disulfide <span><math><mrow><mrow><mo>(</mo><mrow><mtext>Mo</mtext><msub><mi>S</mi><mrow><mn>2</mn><mspace></mspace></mrow></msub></mrow><mo>)</mo></mrow><mtext>,</mtext></mrow></math></span> copper oxide (CuO), copper (Cu) ternary nanofluid in an arterial squeezed channel. To enhance the model's novelty, the Poisson-Boltzmann equation is utilized with the Debye-Hückel approximation to estimate the electric potential accurately. Also, we explore the impact of thermal radiation mechanisms along with thermal slip and heat sources to better understand heat transfer phenomena. The arising differential system composed of momentum, and temperature equations is treated through a numerical approach called the finite element method. Results demonstrate that an increase in the Hartmann number leads to a reduction in velocity profiles by up to 30 %, while a higher zeta potential parameter enhances flow velocity by 15 %. Additionally, microrotation of blood particles increases by 20 % with elevated vortex viscosity. Thermal radiation significantly improves heat transfer rates, as evidenced by an 18 % rise in the Nusselt number under intensified thermal slip conditions. These findings present critical insights for optimizing biomedical flows and heat transfer mechanisms in engineering applications.</div></div>","PeriodicalId":19272,"journal":{"name":"Nuclear Engineering and Technology","volume":"57 8","pages":"Article 103604"},"PeriodicalIF":2.6,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal performance evaluation of dry storage cask using hybrid 3D and 2D models under normal and fire exposure conditions 利用三维和二维混合模型对正常和火灾条件下的干储桶热性能进行评价

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-04-02 DOI: 10.1016/j.net.2025.103618

Sangjin Kim , Samuel Park , Chongmyung Jin , Richard I. Foster , Dongjin Lee , Seunghyun Kim , Sungyeol Choi

{"title":"Thermal performance evaluation of dry storage cask using hybrid 3D and 2D models under normal and fire exposure conditions","authors":"Sangjin Kim , Samuel Park , Chongmyung Jin , Richard I. Foster , Dongjin Lee , Seunghyun Kim , Sungyeol Choi","doi":"10.1016/j.net.2025.103618","DOIUrl":"10.1016/j.net.2025.103618","url":null,"abstract":"<div><div>Interim storage of Used Nuclear Fuel (UNF) is increasingly important due to saturated fuel pools at Nuclear Power Plants (NPPs). Safe UNF storage requires a detailed assessment of dry cask systems, focusing on thermal, mechanical, and corrosion aspects, which are yet to be fully studied for Korean systems. This study examines the thermal performance of Korean dry cask storage, called KORAD-21 under three cases: normal, direct fire, and indirect fire exposure. Additionally, it considers beyond-design-basis conditions and the impact of radiative heat transfer in the thermal model. The first case represents normal operation while the second and third cases involve fire exposure, modeled as direct and indirect fire. Direct fire involves contact with the cask surface, with 700 °C, 800 °C, 900 °C, and 1000 °C fire for 5–50 min. All cask components stayed below safety limits except at 1000 °C for 50 min, indicating a beyond-design-basis accident. Nonetheless, these results align with U.S. Nuclear Regulatory Commission (NRC) guidelines. Similarly, for indirect fire using diesel and kerosene at radii of 0.5 m, 1 m, and 1.5 m, peak temperatures remained within safety limits. Including radiative heat transfer in the thermal model is crucial for consistent and accurate results.</div></div>","PeriodicalId":19272,"journal":{"name":"Nuclear Engineering and Technology","volume":"57 9","pages":"Article 103618"},"PeriodicalIF":2.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143825904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel testing method of beam pointing accuracy for high-power laser facility 一种大功率激光设备光束指向精度测试新方法

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-04-02 DOI: 10.1016/j.net.2025.103595

Xiaolu Zhang, Lu Zhang, Song Gao, Huaiwen Guo, Jun Zhang, Junpu Zhao, Pin Yang, Longfei Jing, Ping Li, Wei Zhou

引用次数: 0

Dose coefficients for the ICRP pediatric mesh-type reference computational phantoms under idealized external photon exposure geometries 理想外部光子暴露几何下ICRP儿科网格型参考计算幻影的剂量系数

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-04-02 DOI: 10.1016/j.net.2025.103621

Chansoo Choi , Bangho Shin , Yeon Soo Yeom , Wesley E. Bolch , Chan Hyeong Kim

{"title":"Dose coefficients for the ICRP pediatric mesh-type reference computational phantoms under idealized external photon exposure geometries","authors":"Chansoo Choi , Bangho Shin , Yeon Soo Yeom , Wesley E. Bolch , Chan Hyeong Kim","doi":"10.1016/j.net.2025.103621","DOIUrl":"10.1016/j.net.2025.103621","url":null,"abstract":"<div><div>The International Commission on Radiological Protection (ICRP) recently released the pediatric mesh-type reference computational phantoms (MRCPs) through ICRP Publication 156 to overcome the limitations of the pediatric voxel-type reference computational phantoms (VRCPs) of ICRP Publication 143. In the present study, these pediatric MRCPs were implemented into the Geant4 Monte Carlo code to produce a comprehensive dataset of dose coefficients for idealized external photon exposure geometries. This dataset includes 29 individual organ/tissue dose coefficients and effective dose coefficients, covering six irradiation geometries (i.e., AP, PA, LLAT, RLAT, ROT, and ISO) and 55 monoenergetic photon energies ranging from 10 keV to 10 GeV. The dataset comparison with the adult MRCPs of ICRP Publication 145 revealed substantial differences in effective dose coefficients throughout most energy ranges, primarily due to the age-related variations in organ/tissue depths, the differences reaching up to a factor ∼9. In addition, the comparisons with the pediatric VRCPs identified notable differences in effective dose coefficients, reaching up to a factor ∼4, for photon energies below 50 keV, due to the differences in phantom geometries and updates in simulation setups. For photon energies above 50 keV, deviations in effective dose coefficients between the pediatric MRCPs and VRCPs remained within 10 %.</div></div>","PeriodicalId":19272,"journal":{"name":"Nuclear Engineering and Technology","volume":"57 9","pages":"Article 103621"},"PeriodicalIF":2.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143824228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Feasibility study for the criticality calculations of the LEU+ with ATF fuels ATF燃料低浓铀临界计算的可行性研究

IF 2.6 3区工程技术

Nuclear Engineering and Technology Pub Date : 2025-04-02 DOI: 10.1016/j.net.2025.103619

Keon Il Cha, Seok Geun Cho, Kyoon Ho Cha

引用次数: 0