Relevant bibliographies by topics / LWR models

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'LWR models'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "LWR models"

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Oriolo, Francesco, and Sandro Paci. "Heat and mass transfer models in LWR containment systems." Nuclear Engineering and Design 204, no. 1-3 (2001): 233–50. http://dx.doi.org/10.1016/s0029-5493(00)00314-9.

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Chopra, O. K., and W. J. Shack. "Overview of Fatigue Crack Initiation in Carbon and Low-Alloy Steels in Light Water Reactor Environments." Journal of Pressure Vessel Technology 121, no. 1 (1999): 49–60. http://dx.doi.org/10.1115/1.2883667.

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Recent test data illustrate potentially significant effects of light water reactor (LWR) coolant environments on the fatigue resistance of carbon and low-alloy steels. The crack initiation and crack growth characteristics of carbon and low-alloy steels in LWR environments are presented. Decreases in fatigue lives of these steels in high-dissolved-oxygen water are caused primarily by the effect of environment on growth of short cracks <100 μm in depth. The material and loading parameters that influence fatigue life in LWR environments are defined. Statistical models have been developed to es
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Zhang, H. M., and T. Kim. "Effects of Relaxation and Anticipation on Riemann Solutions of Payne-Whitham Model." Transportation Research Record: Journal of the Transportation Research Board 1710, no. 1 (2000): 131–35. http://dx.doi.org/10.3141/1710-15.

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The solutions of Riemann problems of a particular higher-order model—the Payne-Whitham (PW) model—are studied using Roe’s flux splitting scheme as presented by Leo and Pretty. Despite numerous works on higher-order models, little is known about Riemann solutions of these models and how relaxation and anticipation affect these solutions. Riemann solutions of the PW model are computed and compared with those of the Lighthill-Whitham-Richards (LWR) model having the same initial (density) data. It was found that faster relaxation forces the PW model to behave much like the LWR model, that strong a
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Raza, Asif, and Ming Zhong. "Lane-based short-term urban traffic parameters forecasting using multivariate artificial neural network and locally weighted regression models: A genetic approach." Canadian Journal of Civil Engineering 46, no. 5 (2019): 371–80. http://dx.doi.org/10.1139/cjce-2017-0644.

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Short-term prediction of traffic conditions on urban arterials has recently become increasingly important because of its vital role in the basic traffic management functions and trip decision-making processes. Such information is useful for optimal infrastructure operation, routing, and trip scheduling. However, forecasting models offering a high accuracy at a fine temporal resolution (e.g., 1 or 5 min) and, especially, lane-based are still rare and need special attention. Given the dynamic and stochastic nature of traffic, this study proposes a genetically optimized artificial neural network
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Qin, Yanyan, Hao Wang, and Daiheng Ni. "Lighthill-Whitham-Richards Model for Traffic Flow Mixed with Cooperative Adaptive Cruise Control Vehicles." Transportation Science 55, no. 4 (2021): 883–907. http://dx.doi.org/10.1287/trsc.2021.1057.

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In the future, road traffic will incorporate a random mix of manual vehicles and cooperative adaptive cruise control (CACC) vehicles, where a CACC vehicle will degrade to an adaptive cruise control (ACC) vehicle when vehicle-to-vehicle communications are not available. This paper proposes a generalized framework of the Lighthill-Whitham-Richards (LWR) model for such mixed vehicular flow under different CACC penetration rates. In this approach, the kinematic wave speed propagating through the mixed platoon was theoretically proven to be the slope of mixed fundamental diagram. In addition, the r
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Iftikhar, Amir, Zawar H. Khan, T. Aaron Gulliver, et al. "Macroscopic Traffic Flow Characterization at Bottlenecks." Civil Engineering Journal 6, no. 7 (2020): 1227–42. http://dx.doi.org/10.28991/cej-2020-03091543.

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Traffic congestion is a significant issue in urban areas. Realistic traffic flow models are crucial for understanding and mitigating congestion. Congestion occurs at bottlenecks where large changes in density occur. In this paper, a traffic flow model is proposed which characterizes traffic at the egress and ingress to bottlenecks. This model is based on driver response which includes driver reaction and traffic stimuli. Driver reaction is based on time headway and driver behavior which can be classified as sluggish, typical or aggressive. Traffic stimuli are affected by the transition width a
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Imran, Waheed, Zawar H. Khan, T. A. Gulliver, Khurram S. Khattak, Salman Saeed, and M. Sagheer Aslam. "Macroscopic Traffic Flow Characterization for Stimuli Based on Driver Reaction." Civil Engineering Journal 7, no. 1 (2021): 1–13. http://dx.doi.org/10.28991/cej-2021-03091632.

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The design and management of infrastructure is a significant challenge for traffic engineers and planners. Accurate traffic characterization is necessary for effective infrastructure utilization. Thus, models are required that can characterize a variety of conditions and can be employed for homogeneous, heterogeneous, equilibrium and non-equilibrium traffic. The Lighthill-Whitham-Richards (LWR) model is widely used because of its simplicity. This model characterizes traffic behavior with small changes over a long idealized road and so is inadequate for typical traffic conditions. The extended
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Toptan, Aysenur, Nathan W. Porter, Robert K. Salko, and Maria N. Avramova. "Implementation and assessment of wall friction models for LWR core analysis." Annals of Nuclear Energy 115 (May 2018): 565–72. http://dx.doi.org/10.1016/j.anucene.2018.02.022.

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Hou, Jason, Maria Avramova, and Kostadin Ivanov. "Best-Estimate Plus Uncertainty Framework for Multiscale, Multiphysics Light Water Reactor Core Analysis." Science and Technology of Nuclear Installations 2020 (July 31, 2020): 1–18. http://dx.doi.org/10.1155/2020/7526864.

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Tremendous work has been done in the Light Water Reactor (LWR) Modelling and Simulation (M&S) uncertainty quantification (UQ) within the framework of the Organization for Economic Cooperation and Development (OECD)/Nuclear Energy Agency (NEA) LWR Uncertainty Analysis in Modelling (UAM) benchmark, which aims to investigate the uncertainty propagation in all M&S stages of the LWRs and to guide uncertainty and sensitivity analysis methodology development. The Best-Estimate Plus Uncertainty (BEPU) methodologies have been developed and implemented within the framework of the LWR UAM benchma
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Briani, Maya, Emiliano Cristiani, and Paolo Ranut. "Macroscopic and Multi-Scale Models for Multi-Class Vehicular Dynamics with Uneven Space Occupancy: A Case Study." Axioms 10, no. 2 (2021): 102. http://dx.doi.org/10.3390/axioms10020102.

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In this paper, we propose two models describing the dynamics of heavy and light vehicles on a road network, taking into account the interactions between the two classes. The models are tailored for two-lane highways where heavy vehicles cannot overtake. This means that heavy vehicles cannot saturate the whole road space, while light vehicles can. In these conditions, the creeping phenomenon can appear, i.e., one class of vehicles can proceed even if the other class has reached the maximal density. The first model we propose couples two first-order macroscopic LWR models, while the second model
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Dissertations / Theses on the topic "LWR models"

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Ježková, Jitka. "Modelování dopravního toku." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232180.

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Tato diplomová práce prezentuje problematiku dopravního toku a jeho modelování. Zabývá se především několika LWR modely, které následně rozebírá a hledá řešení pro počáteční úlohy. Ukazuje se, že ne pro všechny počáteční úlohy lze řešení definovat na celém prostoru, ale jen v určitém okolí počáteční křivky. Proto je dále odvozena metoda výpočtu velikosti tohoto okolí a to nejen zcela obecně, ale i pro dané modely. Teoretický rozbor LWR modelů a řešení počátečních úloh jsou demonstrovány několika příklady, které zřetelně ukazují, jak se dopravní tok simulovaný danými modely chová.
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Grundmann, Ulrich, Ulrich Rohde, Siegfried Mittag, and Sören Kliem. "DYN3D version 3.2 - code for calculation of transients in light water reactors (LWR) with hexagonal or quadratic fuel elements - description of models and methods -." Forschungszentrum Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-28604.

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DYN3D is an best estimate advanced code for the three-dimensional simulation of steady-states and transients in light water reactor cores with quadratic and hexagonal fuel assemblies. Burnup and poison-dynamic calculations can be performed. For the investigation of wide range transients, DYN3D is coupled with system codes as ATHLET and RELAP5. The neutron kinetic model is based on the solution of the three-dimensional two-group neutron diffusion equation by nodal expansion methods. The thermal-hydraulics comprises a one- or two-phase coolant flow model on the basis of four differential balanc
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Grundmann, Ulrich, Ulrich Rohde, Siegfried Mittag, and Sören Kliem. "DYN3D version 3.2 - code for calculation of transients in light water reactors (LWR) with hexagonal or quadratic fuel elements - description of models and methods -." Forschungszentrum Rossendorf, 2005. https://hzdr.qucosa.de/id/qucosa%3A21687.

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DYN3D is an best estimate advanced code for the three-dimensional simulation of steady-states and transients in light water reactor cores with quadratic and hexagonal fuel assemblies. Burnup and poison-dynamic calculations can be performed. For the investigation of wide range transients, DYN3D is coupled with system codes as ATHLET and RELAP5. The neutron kinetic model is based on the solution of the three-dimensional two-group neutron diffusion equation by nodal expansion methods. The thermal-hydraulics comprises a one- or two-phase coolant flow model on the basis of four differential balanc
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Formánek, Martin. "Výukový model pro mechatroniku: vývoj modelu a rychlé komunikace pomocí USB." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417789.

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Táto diplomová práca sa zaoberá návrhom a realizáciou výukového modelu pre študentov mechatroniky na vysokej škole. Úvod práce sa zaoberá krátkym uvedením do problematiky používania univerzálnej sériovej zbernice a jej implementáciou pre komunikáciu s mikrokontrolérom. Druhá časť je venovaná hardwaru zariadenia, medzi čo patrí voľba vhodného motoru, návrh vhodných elektronických komponentov, návrh dosiek plošných spojov a taktiež mechanickej konštrukcie celého zariadenia. Nasleduje softwarová časť, popisujúca praktickú realizáciu komunikácie, program v mikrokontroléry, a Toolbox, ktorý umožňuj
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Gasik, Kevin Richard. "COMPARISON OF LQR AND LQR-MRAC FOR LINEAR TRACTOR-TRAILER MODEL." DigitalCommons@CalPoly, 2019. https://digitalcommons.calpoly.edu/theses/2117.

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The United States trucking industry is immense. Employing over three million drivers and traveling to every city in the country. Semi-Trucks travel millions of miles each week and encompass roads that civilians travel on. These vehicles should be safe and allow efficient travel for all. Autonomous vehicles have been discussed in controls for many decades. Now fleets of autonomous vehicles are beginning their integration into society. The ability to create an autonomous system requires domain and system specific knowledge. Approaches to implement a fully autonomous vehicle have been developed u
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Bergersen, Bjørnar Dolva. "Numerical Solutions of Traffic Flow on Networks : Using the LWR-Model and the Godunov Scheme." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for matematiske fag, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-25103.

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This paper shows how to create a simulationtool for traffic flow in a network using the Lighthill--Witham--Richards model and the Godunov scheme. First some basic rules about conservation laws are described and how to solve them using the method characteristics. This leads to the notion of weak solutions which can be solved by shock- and rarefractions-solutions. This is then used to describe how traffic behaves on a single road by using the LWR-model. The behavior of traffic at junctions is discussed, more specifically how to find the maximum flux through a junction when we deal with different
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Viswanathan, Vishnu. "Improving the dynamical model of the Moon using lunar laser ranging (LLR) and spacecraft data." Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEO005/document.

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L'objectif principal de ce travail était d'améliorer le modèle dynamique de la Lune dans les éphémérides numériques INPOP et d’exploiter cette amélioration en vu d’une meilleure caractérisation de la structure interne de la Lune et d’effectuer des tests de la relativité générale. Dans un premier temps, un travail d’analyse des algorithmes nécessaires aux calculs des points normaux utilisés pour la construction des éphémérides lunaire a été effectué. Une analyse approfondie des procédures utilisées par l’équipe de Grasse montre l'impact du choix de l’algorithme sur le calcul de l'incertitude. L
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Krampoťák, Štefan. "Model dopravních situací." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219706.

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This master thesis deals with analyze of camera system in real traffic, using these system and realization of traffic situation model. Result of this work is fully functional model of traffic situation, which shows the capability of these camera systems in real traffic. It consists of two basic parts, the first is physical model of traffic with semaphore and second part is control program with algorithm for detection of traffic offences. The system contains speed measurement and red light violation. Model has capable of control the speed of cars, control semaphores and configure cameras.
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Sardinha, Anna Luiza Barszczak. "Contribuição para um modelo de circulação do LCR na cabeça." Master's thesis, FCT - UNL, 2008. http://hdl.handle.net/10362/2292.

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Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para obtenção do Grau de Mestre em Engenharia Biomédica<br>A circulação do líquido cefaloraquidiano (LCR) é de extrema importância para a compreensão de patologias importantes como a Hidrocefalia de Pressão Normal(HPN), que é causada por um desequilíbrio entre a produção e a absorção do LCR. É portanto fundamental o desenvolvimento de um modelo que abranja todo o sistema do LCR de maneira a melhorar o conhecimento do sistema e permitir tratamentos mais eficazes. A quantificação de parâmetros de f
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Bathelt, Regina Ehlers. "Ensaios para um modo de ler modelos didático-teóricos em educação matemática : um estudo sobre a ótica do modelo dos campos semânticos /." Rio Claro, 2018. http://hdl.handle.net/11449/157380.

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Orientador: Romulo Campos Lins<br>Orientador: Heloisa da Silva<br>Banca: João Ricardo Viola dos Santos<br>Banca: Jorge Tarcísio da Rocha Falcão<br>Banca: Marcus Vinicius Maltempi<br>Banca: Regina Luzia Corio de Buriasco<br>Resumo: Este estudo encontra sua justificação no cenário mais amplo de uma pesquisa bibliográfica sobre teorias de educação matemática como as postuladas em Lins, Freudenthal, Davidov, Brosseau, etc., no qual procuramos por desenvolvimento teórico na perspectiva do Modelo dos Campos Semânticos (LINS, 1999, 2004, 2008, 2012), a propósito de gerar meios a caracterizar "ação di
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Books on the topic "LWR models"

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Banks, H. Thomas. Approximation methods for control of acoustic/structure models with piezoceramic actuators. Institute for Computer Applications in Science and Engineering, 1991.

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Die Deliktsfähigkeit juristischer Personen: Eine rechtsvergleichende Untersuchung zur Übertragbarkeit des englischen Modells. P. Lang, 2001.

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Martins, Marta. Ler Sophia: Os valores, os modelos e as estratégias discursivas nos contos de Sophia de Mello Breyner Andresen. Porto Editora, 1995.

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Lucile, Bas, Hilbring Meike, Rey Francine, Öğdül Rahmi, and Özgüner Işıl, eds. Gettyimages 1910'lar: Fotoğraflarla 20. yüzyılın sosyal tarihi = Decades of the 20th century = Decennies du XX siecle. Literatür Yayıncılık, 2005.

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Nascimento, Aires Augusto. Ler contra o tempo: Condições dos textos na cultura portuguesa (recolha de estudos em Hora de Vésperas). Centro de Estudos Clássicos, 2012.

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France. Commissariat à l'énergie atomique., ed. Proceedings of the seminar on thermal performance of high burn-up LWR fuel: 3-6 March 1998, Commissariat à lÉnergie Atomique (CEA) Cadarache, France. Nuclear Energy Agency, Organisation for Economic Co-operation and Development, 1998.

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Effective Classroom Management: Models and Strategies for Today's Classrooms. Prentice Hall, 2003.

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Hardin, Carlette J. Effective Classroom Management: Models and Strategies for Today's Classrooms. Prentice Hall, 2003.

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Manning, M. Lee, and Katherine T. Bucher. Classroom Management: Models, Applications, and Cases. Prentice Hall, 2002.

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Manning, M. Lee, and Katherine T. Bucher. Classroom Management: Models, Applications, and Cases. Prentice Hall, 2002.

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Book chapters on the topic "LWR models"

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Garavello, Mauro, and Benedetto Piccoli. "A Multibuffer Model for LWR Road Networks." In Complex Networks and Dynamic Systems. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-6243-9_6.

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Ludovic, L., C. Estelle, and L. Jorge. "The Lagrangian Coordinates Applied to the LWR Model." In Hyperbolic Problems: Theory, Numerics, Applications. Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-75712-2_67.

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Jingbo, Wang, Qian Li, and Wang Jingtao. "Study of Dynamic Traffic Flow Network Model Based on LWR Model." In Communications in Computer and Information Science. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-34038-3_77.

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Leclercq, Ludovic, and Jorge A. Laval. "A Multiclass Car-Following Rule Based on the LWR Model." In Traffic and Granular Flow ’07. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-77074-9_13.

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Kita, Kenji, Takeshi Kawabata, and Hiroaki Saito. "GLR Parsing in Hidden Markov Model." In Generalized LR Parsing. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-4034-2_11.

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Forcadel, Nicolas, and Mamdouh Zaydan. "Derivation of a Macroscopic LWR Model from a Microscopic follow-the-leader Model by Homogenization." In IFIP Advances in Information and Communication Technology. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-55795-3_25.

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Flynn, Robin J. "CD95 and the MRL-lpr Mouse Model." In Methods in Molecular Biology. Springer New York, 2017. http://dx.doi.org/10.1007/978-1-4939-6780-3_21.

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Guthier, C. V., K. P. Aschenbrenner, F. Wenz, and J. W. Hesser. "Compressed Sensing-Based LDR Brachytherapy Inverse Treatment Planning with Biological Models." In IFMBE Proceedings. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19387-8_102.

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Chen, Jianzhong, Zhongke Shi, and Yanmei Hu. "Numerical Solution of a Two-Class LWR Traffic Flow Model by High-Resolution Central-Upwind Scheme." In Computational Science – ICCS 2007. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-72584-8_3.

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Agrawal, Shweta, Daniel Wichs, and Shota Yamada. "Optimal Broadcast Encryption from LWE and Pairings in the Standard Model." In Theory of Cryptography. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-64375-1_6.

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Conference papers on the topic "LWR models"

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Humphries, Larry, Brad Beeny, David Louie, Hossein Esmaili, and Michael Salay. "Non-LWR Model Development for the MELCOR Code." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-82415.

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MELCOR is a fully-integrated, system-level computer code developed by Sandia National Laboratories (SNL) for the Nuclear Regulatory Commission (NRC) with the primary objective of modeling the progression of severe accidents in light water nuclear power plants [1,2,3]. Since the project began in 1982, MELCOR has undergone continuous development to address emerging issues, process new experimental information, and create a repository of knowledge on severe accident phenomena. This paper summarizes model development specifically developed for non-LWR applications such as high temperature gas reac
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Eason, Ernest, and Raj Pathania. "Crack Tip Strain Rate Models for Environmentally-Assisted Fatigue Crack Growth in Light Water Reactor Environments." In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63640.

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This paper demonstrates the feasibility of using theoretically-motivated crack tip strain rate (CTSR) models to estimate environmentally-assisted fatigue (EAF) crack growth rate (CGR) in light water reactor (LWR) environments. Four models, each combining one of two CTSR expressions with one of two theoretical derivations from Faraday’s Law, were fitted to measured CGR data under dynamic loadings. The four models were compared with each other and with experimental crack growth data from examples where various austenitic stainless steel base metals and nickel-alloy welds were tested in LWR envir
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Higuchi, Makoto, Kazuya Tsutsumi, and Katsumi Sakaguchi. "Evaluation of Fatigue Damage in LWR Water With and Without Threshold and Moderation Factor." In ASME 2003 Pressure Vessels and Piping Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/pvp2003-1774.

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During the past twenty years, the fatigue initiation life of LWR structural materials, carbon, low alloy and stainless steels has been shown to decrease remarkably in the simulated LWR (light water reactor) coolant environments. Several models for evaluating the effects of environment on fatigue life reduction have been developed based on published environmental fatigue data. Initially, based on Japanese fatigue data, Higuchi and Iida proposed a model for evaluating such effects quantitatively for carbon and low alloy steels in 1991. Thereafter, Chopra et al. proposed other models for carbon,
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Chopra, Omesh K., and William J. Shack. "The Effect of LWR Coolant Environments on the Fatigue Life of Reactor Materials." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93889.

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The existing fatigue strain–vs.–life (ε–N) data illustrate potentially significant effects of light water reactor (LWR) coolant environments on the fatigue resistance of pressure vessel and piping steels. This paper reviews the existing fatigue ε–N data for carbon and low–alloy steels and austenitic stainless steels in LWR coolant environments. The effects of key material, loading, and environmental parameters, such as steel type, strain amplitude, strain rate, temperature, dissolved oxygen level in water, flow rate, surface finish, and heat-to-heat variation, on the fatigue lives of these ste
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Chopra, Omesh K. "Development of a Fatigue Design Curve for Austenitic Stainless Steels in LWR Environments: A Review." In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1229.

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The ASME Boiler and Pressure Vessel Code provides rules for the construction of nuclear power plant components and specifies fatigue design curves for structural materials. However, the effects of light water reactor (LWR) coolant environments are not explicitly addressed by the Code design curves. Existing fatigue strain–vs.–life (ε–N) data illustrate potentially significant effects of LWR coolant environments on the fatigue resistance of pressure vessel and piping steels. This paper reviews the existing fatigue ε–N data for austenitic stainless steels in LWR coolant environments. The effects
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Humphries, Larry L., Brad J. Merrill, and David L. Louie. "Integration of CONTAIN Liquid Metal Models Into the MELCOR Code." In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-30288.

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A sodium coolant accident analysis code is necessary to provide regulators with a means of performing confirmatory analyses for future sodium reactor licensing submissions. MELCOR and CONTAIN, which are currently employed by the U.S. Nuclear Regulatory Commission (NRC) for light water reactor (LWR) licensing, have been traditionally used for level 2 and level 3 probabilistic analyses as well as containment design basis accident analysis. To meet future regulatory needs, new models will be added to the MELCOR code for simulation of Liquid Metal Reactor (LMR) designs. Existing models developed f
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Chopra, O. K., and W. J. Shack. "Margins for ASME Code Fatigue Design Curve: Effects of Surface Finish and Material Variability." In ASME 2003 Pressure Vessels and Piping Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/pvp2003-1772.

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The ASME Boiler and Pressure Vessel Code provides rules for the construction of nuclear power plant components. This Code specifies fatigue design curves for structural materials. However, the effects of light water reactor (LWR) coolant environments are not explicitly addressed by the Code design curves. Existing fatigue strain-vs.-life (ε-N) data illustrate potentially significant effects of LWR coolant environments on the fatigue resistance of pressure vessel and piping steels. This report provides an overview of the existing fatigue ε-N data for carbon and low-alloy steels and wrought and
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Higuchi, Makoto, and Katsumi Sakaguchi. "Review and Consideration of Unsettled Problems on Evaluation of Fatigue Damage in LWR Water." In ASME 2005 Pressure Vessels and Piping Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pvp2005-71306.

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Reduction in the fatigue life reduction of structural materials of nuclear components in LWR water was initially detected and examined by the authors in the 1980s, who subsequently directed considerable effort to the development of a method for evaluating this reduction quantitatively. Following the establishment of equations to calculate environmental fatigue life reduction for carbon and low alloy steels in 1985 by Higuchi and Sakamoto [1], appeared based on numerous new fatigue data obtained under various environmental and mechanical test conditions. The latest models for evaluation using F
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Langsfeld, Joshua D., Ariyan M. Kabir, Krishnanand N. Kaipa, and Satyandra K. Gupta. "Online Learning of Part Deformation Models in Robotic Cleaning of Compliant Objects." In ASME 2016 11th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/msec2016-8663.

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We present an approach to automatically learn a bimanual robotic cleaning task on compliant objects. One robot grasps the object, while the other robot cleans it. Given a part with unknown deformation characteristics, the system visually detects the regions to be cleaned, and generates plans for both the grasping and cleaning arms. As the system performs cleaning attempts and gains experience with multiple new parts, it learns models of the part deformation depending on the cleaning force and grasping parameters. A planner iteratively generates tool paths for both robots using the available kn
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Tentner, Adrian, Prasad Vegendla, Ananias Tomboulides, Aleks Obabko, Elia Merzari, and Dillon Shaver. "Advances in Modeling Critical Heat Flux in LWR Boiling Flows With the NEK-2P CFD Code." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81910.

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The paper focuses on the extension of the NEK-2P Wall Heat Transfer model, which was initially developed for the analysis of Critical Heat Flux (CHF) under Dryout (DO) conditions to the simulation of CHF under Departure from Nucleate Boiling (DNB) conditions. The paper presents results of recent NEK-2P analyses of several CHF experiments including both DO and DNB conditions. The CHF experiments analyzed have measured the axial distribution of wall temperatures in two-phase boiling flow in a vertical channel with a heated wall. The axial distribution of the calculated wall temperatures is compa
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Reports on the topic "LWR models"

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Spencer, B. W., and R. J. Gardener. Improved LWR Fuel Rod Mechanics Models. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1467423.

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Odette, G. Robert, and Takuya Yamamoto. Advanced Models of LWR Pressure Vessel Embrittlement for Low Flux-HighFluence Conditions. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1084639.

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Odette, G. Robert. High Fluency Low Flux Embrittlement Models of LWR Reactor Pressure Vessel Embrittlement and a Supporting Database from the UCSB ATR-2 Irradiation Experiment. Office of Scientific and Technical Information (OSTI), 2017. http://dx.doi.org/10.2172/1346148.

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Becker, Peter J. Using the Light Weight Deflectometer for Performance-Based Quality Assurance Testing of Cement Modified Subgrades. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317304.

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This report documents the findings from SPR-4230 (Alternative Quality Assurance Methods for Compacted Subgrade). The main objective of SPR-4230 involved establishing performance-related quality assurance (QA) test methods for pavement subgrade construction. Because INDOT generally prefers specifying subgrade treatment type IBC (i.e., 14-in. cement modified subgrade), this study focused on performance-based QA test methods for constructing cement modified subgrade. Moreover, INDOT prefers using light weight deflectometer (LWD) for chemically modified subgrade construction acceptance, so this st
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Simunovic, Srdjan, Theodore M. Besmann, and Stewart L. Voit. Benchmark Problem for Calculating Oxygen Potential in High Burnup LWR Fuel using the THERMOCHIMICA Module in Moose/Bison. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1163165.

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Wadman, Heidi, and Jesse McNinch. Elevation of underlying basement rock, Ogdensburg Harbor, NY. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/40843.

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Over six linear miles of shallow acoustic reflection geophysical data were collected in an 800 ft by 300 ft survey region at Ogdensburg Harbor, Ogdensburg, NY. To better accommodate modern commercial vessels and expand the harbor’s capacity, the current navigable depth of -19 ft Low Water Depth (LWD) needs to be increased to -28 ft LWD, and an accurate map of the nature of the riverbed material (e.g., unconsolidated sediment, partially indurated glacial till, or bedrock) is required to effectively plan for removal. A total of 28 boreholes were previously collected to map the stratigraphy, and
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Heasler, Patrick G. Development of a Random Field Model for Gas Plume Detection in Multiple LWIR Images. Office of Scientific and Technical Information (OSTI), 2008. http://dx.doi.org/10.2172/1133250.

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Weber, M., G. Tartakovsky, C. Farrow, J. Fullerton, J. McDonald, and William Nichols. Vadose Zone Model for LW Crib Area for Composite Analysis. Office of Scientific and Technical Information (OSTI), 2020. http://dx.doi.org/10.2172/1668816.

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Garavaglia, T., and K. Kauffmann. A model for local current decay in a superconducting LR chain. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/79106.

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Park, Sung Soo, Antonio Bobet, and Tommy E. Nantung. Correlation between Resilient Modulus (MR) of Soil, Light Weight Deflectometer (LWD), and Falling Weight Deflectometer (FWD). Purdue University, 2018. http://dx.doi.org/10.5703/1288284316651.

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