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Three-dimensional particle tracking velocimetry (3D-PTV) technique is widely used to acquire the complicated trajectories of particles and flow fields. It is known that the accuracy of 3D-PTV depends on the mapping function to reconstruct…

流体动力学 · 物理学 2020-02-04 Yeonghyeon Gim , Dong Kyu Jang , Dong Kee Sohn , Hyoungsoo Kim , Han Seo Ko

Positron Emission Particle Tracking (PEPT) is an imaging method for the visualization of fluid motion, capable of reconstructing three-dimensional trajectories of small tracer particles suspended in nearly any medium, including fluids that…

仪器与探测器 · 物理学 2023-03-20 Avshalom Offner , Sam Manger , Jacques Vanneste

Understanding the behavior of materials under irradiation is crucial for the design and safety of nuclear reactors, spacecraft, and other radiation environments. The threshold displacement energy (Ed) is a critical parameter for…

材料科学 · 物理学 2025-02-05 Rosty B. Martinez Duque , Arman Duha , Mario F. Borunda

Combustion is the primary process in gas turbine engines, where there is a need for efficient air-fuel mixing to enhance performance. High-shear swirl injectors are commonly used to improve fuel atomization and mixing, which are key factors…

机器学习 · 计算机科学 2024-09-25 PK Archhith , SK Thirumalaikumaran , Balasundaram Mohan , Saptharshi Basu

Pebble bed reactor (PBR) operation presents unique advantages and challenges due to the ability to continuously change the fuel mixture and excess reactivity. Each operation parameter affects reactivity on a different timescale. For…

系统与控制 · 电气工程与系统科学 2025-11-10 Ian Kolaja , Ludovic Jantzen , Tatiana Siaraferas , Massimiliano Fratoni

Observables from nuclear and high-energy experiments can be degraded by detector performance and/or methodology in extracting the observables, such as of the final-state characteristics of heavy-ion collisions in relation to a coarsely…

核理论 · 物理学 2022-03-14 Pawel Danielewicz , Mizuki Kurata-Nishimura

To improve the ability of particle identification of the RIBLL2 separator at the HIRFL-CSR complex, a new high-performance detector for measuring fragment starting time and position at the F1 dispersive plane has been constructed and…

仪器与探测器 · 物理学 2021-06-10 Fang Fang , Shuwen Tang , Shitao Wang , Xueheng Zhang , Zhiyu Sun , Yuhong Yu , Duo Yan , Shuya Jin , Yixuan Zhao , Shaobo Ma , Yongjie Zhang

In many inertial confinement fusion experiments, the neutron yield and other parameters cannot be completely accounted for with one and two dimensional models. This discrepancy suggests that there are three dimensional effects which may be…

Cosmic ray muons enable non-invasive imaging of dense structures through multipleCoulomb scattering (MCS), with scattering angles dependent on atomic number (Z). Traditional algorithms like Point of Closest Approach (PoCA) assume single…

应用物理 · 物理学 2026-03-09 Reshma Ughade , Stylianos Chatzidakis

Aims: We introduce a new deep-learning approach for the reconstruction of 3D dust density and temperature distributions from multi-wavelength dust emission observations on the scale of individual star-forming cloud cores (<0.2pc). Methods:…

The study of photoionised gas in planetary nebulae (PNe) has played a major role achieving, over the years, a better understanding of a number of physical processes pertinent to a broader range of fields than just PNe studies, ranging from…

天体物理学 · 物理学 2009-11-11 Barbara Ercolano

Environmental perception obtained via object detectors have no predictable safety layer encoded into their model schema, which creates the question of trustworthiness about the system's prediction. As can be seen from recent adversarial…

计算机视觉与模式识别 · 计算机科学 2022-11-11 Abhishek Vivekanandan , Niels Maier , J. Marius Zoellner

A deep neural network was developed for the purpose of predicting thermal conductivity with a case study performed on neutron irradiated nuclear fuel. Traditional thermal conductivity modeling approaches rely on existing theoretical…

材料科学 · 物理学 2019-01-04 Elizabeth Kautz , Alexander Hagen , Jesse Johns , Douglas Burkes

A revised and greatly improved version of the 3D continuum radiative transfer code MC3D is presented. It is based on the Monte-Carlo method and solves the radiative transfer problem self-consistently. It is designed for the simulation of…

天体物理学 · 物理学 2009-11-07 Sebastian Wolf

Silver released from TRISO fuel particles can migrate through the SiC layer and deposit on reactor components, posing radiation hazards and operational challenges. Despite numerous proposed mechanisms, the precise pathway of silver…

Dry casks for spent nuclear fuel (SNF) ensure the safe storage of SNF and provide radiation shielding. However, the presence of the thick casks encompassing several layers of steel and concrete makes inspection of the SNF a challenging…

仪器与探测器 · 物理学 2021-10-19 Zhihua Liua , Ming Fang , Jon George , Ling-Jian Meng , Angela Di Fulvio

The document describes a numerical algorithm to simulate plasmas and fluids in the 3 dimensional space by the Euler method, in which the spatial meshes are fixed to the space. The plasmas and fluids move through the spacial Euler mesh…

等离子体物理 · 物理学 2020-04-09 Hiroki Nakamura , Shigeo Kawata , Ken Uchibori , Takahiro Karino

In the present Letter, first-of-its-kind computer simulations predicting plasma profiles for modern optimized stellarators -- while self-consistently retaining neoclassical transport, turbulent transport with 3D effects, and external…

等离子体物理 · 物理学 2023-03-27 A. Bañón Navarro , A. Di Siena , J. L. Velasco , F. Wilms , G. Merlo , T. Windisch , L. L. LoDestro , J. B. Parker , F. Jenko

A computational model is developed to assist the design of the first hybrid rocket engine of the McGill Rocket Team, using liquid nitrous oxide as an oxidizer and solid paraffin wax as a fuel. The model is developed in three phases: In the…

流体动力学 · 物理学 2023-02-15 Joel Jean-Philyppe

We propose a new method for pileup mitigation by implementing "pileup per particle identification" (PUPPI). For each particle we first define a local shape $\alpha$ which probes the collinear versus soft diffuse structure in the…

高能物理 - 唯象学 · 物理学 2014-10-28 Daniele Bertolini , Philip Harris , Matthew Low , Nhan Tran