Academic literature on the topic 'Core baffle'
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Journal articles on the topic "Core baffle"
Hagerty, James D. "Reinforced foam core acoustic baffle." Journal of the Acoustical Society of America 98, no. 3 (September 1995): 1255. http://dx.doi.org/10.1121/1.413530.
Full textChirkov, A., V. Kharchenko, and S. Kobelsky. "Assessment of WWER-1000 Core Baffle Form Alteration during Operation." Nuclear and Radiation Safety, no. 3(87) (September 15, 2020): 13–20. http://dx.doi.org/10.32918/nrs.2020.3(87).02.
Full textAbdullaiev, A., S. Soldatov, V. Hann, and S. Chernitskyi. "Calculation of Neutron Fluence and Energy Release in WWER-1000 Structural Components Using Monte Carlo Method." Nuclear and Radiation Safety, no. 1(77) (February 19, 2018): 11–17. http://dx.doi.org/10.32918/nrs.2018.1(77).02.
Full textZhang, Enhui, Wenyan Zhu, and Lihe Wang. "Influencing analysis of different baffle factors on oil liquid sloshing in automobile fuel tank." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 13 (June 9, 2020): 3180–93. http://dx.doi.org/10.1177/0954407020919584.
Full textTAHARA, Yoshihisa, Takashi KANAGAWA, and Hiroshi SEKIMOTO. "Two-Dimensional Baffle/Reflector Constants for Nodal Code in PWR Core Design." Journal of Nuclear Science and Technology 37, no. 11 (November 2000): 986–95. http://dx.doi.org/10.1080/18811248.2000.9714982.
Full textMirzov, I., and S. Kandala. "Method of Parametric Assignment of Input Data for Irradiation Swelling Calculation of VVER1000 Internals." Nuclear and Radiation Safety, no. 3(71) (August 15, 2016): 23–27. http://dx.doi.org/10.32918/nrs.2016.3(71).05.
Full textMargolin, B. Z., A. Ya Varovin, A. J. Minkin, D. A. Gurin, and V. A. Glukhov. "Investigation of irradiated metal of WWER-type reactor internals after 45 years of operation. Part 1. Research program and cutting out of samples from pressure vessel internals." Voprosy Materialovedeniya, no. 3(103) (November 30, 2020): 135–43. http://dx.doi.org/10.22349/1994-6716-2020-103-3-135-143.
Full textAltstadt, E., H. Kumpf, F. P. Weiss, E. Fischer, G. Nagel, and G. Sgarz. "Analysis of a PWR core baffle considering irradiation induced creep." Annals of Nuclear Energy 31, no. 7 (May 2004): 723–36. http://dx.doi.org/10.1016/j.anucene.2003.10.011.
Full textFylonych, Yu, V. Zaporozhan, O. Balashevskyi, and K. Merkotan. "Analysis of the influence of nuclear fuel burnup on the 16N formation rate in the primary coolant of the WWER-1000 reactor." Nuclear Physics and Atomic Energy 22, no. 1 (March 25, 2021): 48–55. http://dx.doi.org/10.15407/jnpae2021.01.048.
Full textYONEZAWA, Toshio, Koji ARIOKA, Hiroshi KANASAKI, Koji FUJIMOTO, Kazuhide AJIKI, Takanori MATSUOKA, Sigeru URATA, and Hitoshi MIZUTA. "Intergranular Cracking Mechanism in Baffle Former Bolt Materials for PWR Core Internals." Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan 42, no. 3 (2000): 212–17. http://dx.doi.org/10.3327/jaesj.42.212.
Full textDissertations / Theses on the topic "Core baffle"
Prettyman, Barry Jacob. "Considerations for Hood Placement and Design Downstream from a Fixed-Cone Valve." DigitalCommons@USU, 2014. https://digitalcommons.usu.edu/etd/2119.
Full textSun, P. C. "A core broking model for e-markets." Thesis, Coventry University, 2011. http://curve.coventry.ac.uk/open/items/7e2581d6-c089-47ed-baff-dc819e7fdd13/1.
Full textBrenner, Alan R. "DETERMINATION OF BAFFIN BAY SEDIMENT COMPOSITION VARIABILITY AND PROVENANCE." Kent State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=kent1406745129.
Full textОриняк, Андрій Ігорович. "Методи розрахунку коефіцієнта інтенсивності напружень з врахуванням геометричної нелінійності та довільної форми тріщини." Doctoral thesis, Київ, 2021. https://ela.kpi.ua/handle/123456789/43758.
Full textThe dissertation is dedicated to the development of numerical and analytical methods for calculating the stress intensity factor (SIF) for nonclassical problems of fracture mechanics, in particular, for cracks of complex shape and for cracks in thin structures with taking into account geometric nonlinearity (GN) and their applications in various industries, in particular, for nuclear power plants, for calculation of the elements of the reactor unit. A modification of Williams's method is presented, which describes the stress state in the crack tip. For modification of the classical approach in the considered method the additional members were presented, which are infinite in the crack tip, but attenuate at infinity. The main idea of the method is to divide the whole area of the body into two separate parts – internal one, which embraces the tip of the crack, and the external one. In the inner area, only the classic Williams functions are used, and in the outer area both the classical members and additional ones are used. At the boundary between the selected subdomains, the conjugation conditions are to be fulfilled, the essence of which is to equalize here the stresses and displacements. The very high efficiency of this method is shown for bodies that have the shape of a circle, or are infinite, where almost exact values (up to 6-7 digits) are achieved when using no more than 12-16 members of the expansion. However, for a very elongated rectangular body the method gives much worse results, and the error can reach up to 2%. The practical significance of the proposed approach consists in the obtaining the simple and effective tool for testing the capabilities of commercial packages for calculating the parameters of fracture mechanics, which, as we know, do not always provide the correct results for case when load is applied on the crack surfaces. A thin-walled pipe with a long surface crack is considered. The pipe, surface of which may contain the initial deviation form ideal circle, is loaded by inner pressure. In first time the problem of determining the SIF was considered in a geometrically nonlinear formulation, when changes in the geometry of the body in the process of deformation are accounted for linear material behavior. Based on the Chen-Finnie method, which considers the crack as concentrated compliance, and on original solution for geometrically nonlinear behavior of curved initially distorted beam, the compact analytical formulas are obtained, which gives the value of SIF for each value of inner pressure. Comparison of the analytical results with those obtained by careful numerical FEM analysis, on the one hand, showed their good correspondence, and therefore the accuracy and efficiency of both the analytical and numerical procedures are confirmed. On the other hand, for the first time in the scientific literature, the value of SIF in a geometrically nonlinear formulation are obtained for surface cracks in slightly distorted cylindrical shell with surface long crack. It was shown that even for perfectly circular pipes having the cracks with depth up to half of the thickness of pipe walls, loaded by moderate level of inner pressure, the geometrical nonlinear values of SIF can be 10-15% less than those at linear approach application. This is very significant practical result. Another geometrically nonlinear problem is numerically investigated by known commercial FEM software for the through crack, which is loaded by a significant value of additional longitudinal force (the main factor of geometric nonlinearity considered) and small value of internal pressure (linear consideration). This statement distinguished this task from research conducted at NASA (USA), where the pressure and axial force were proportional as to pipe with closed ends. The geometric nonlinearity of the study is investigated through an incremental increase in loads and the corresponding recalculation of the SIF for the already taken into account changes in the deformed geometry (curvature). A number of tasks for determining the SIF for different pipe radii and dimensionless force values were calculated. Dimensionless parameters, which characterize the deviation of the values of SIF from the linear one, are numerically determined. Application of least square method allowed to suggest the simplified analytical formula for calculation of these deviations. These results are of great theoretical and practical importance. In particular, it is shown that for real pipes the neglecting by influence of axial force in usual approach may lead to 4-6% error of SIF determination. It is noted that additional account for large values of pressure, possible plastic deformations, may further reduce the actual values of SIF. Thus, the significance of the problems and the need for further research in this direction are shown. The necessity of analysis of flat cracks of non-canonical shape in three-dimensional bodies is noted. This is due to the fact that almost all existing solutions in the literature and reference results in normative documents are given for cracks that have shape of an ellipse or its part. However, real cracks detected by non-destructive testing are irregularly shaped cracks. Therefore, it is necessary to create the analytical methods that would allow to assess the impact of the crack shape, and to verify them with careful numerical procedures by FEM. For this purpose, flat internal cracks in infinite 3D body are considered. The formulation of problems for them is reduced to well-known integro-differential equation of the theory of elasticity. Note, that exact fundamental analytical solutions of which exist only for a circular crack and only for some simple laws of loading for an elliptic crack. A universal semi-analytical method for solving the integro-differential equation of the theory of elasticity for plane cracks of normal separation of arbitrary shape has been developed. It is proposed to consider the displacement of the crack edges as a product of a certain function of the crack shape, which satisfy to known asymptotic behavior of the displacement field near the crack front, and a certain polynomial series. As for the functions of the form, three variants of their choice were investigated - a) classical, which depends on the squares of ratio of radial coordinate of the considered point, and the corresponding coordinate of contour point; b) multiplicative, based on the product of equations describing the straight sections of the crack contour, and c) the original Oore-Burns function, which is an integral of the crack contour from the inverse square of the distance of the considered point to each point of the contour. The results showed that the greatest accuracy is achieved by application of hypersingular approach with Oore-Burns function of form. The verification of results was performed for elliptic crack, semielliptic inner crack, rectangular crack. The results were compared with numerical ones calculated by FEM. Practical calculations of SIF dependance with time for NPP reactor ant its elements for different scenarios of emergency situations are carried out. A number of simulation models with a built-in crack have been created, for which SIF calculations were performed by nonlinear FEM analysis. For cracks going through the cladding, where stress jumps occur, the method of influence functions is elaborated, and analytical-numerical procedure used piece-wise continuous basic laws of loading. Practical calculations were performed for the nozzle of reactor vessel, the cylindrical part of vessel, the core barrel and core baffle. These calculations were used to justify the extension of the service life of several units of Ukrainian NPPs.
Диссертационная работа посвящена разработке численных и аналитических методов расчета коэффициента интенсивности напряжений, (КИН) для неклассических проблем механики разрушения, в частности, для трещин сложной формы и для трещин в тонкостенных конструкциях с учетом геометрической нелинейности, (ГН). Представлена модификация метода Вильямса, что учитывает затухающие на бесконечности члены. Исследованы границы и даны рекомендации о применении данного метода. Разработан аналитический метод расчета КИН в трубах с длинными осевыми поверхностными трещинами с учетом ГН в зависимости от внутреннего давления. Результаты хорошо коррелируют с полученными в роботе численными решениями МКЭ. Построены численные модели для расчета КИН и раскрытия берегов трещин в ГН постановке для сквозных трещин в зависимости от переменной величины осевой силы. Построена апроксимационная формула, что описывает влияние ГН эффекта для обобщенной осевой силы и безразмерной длины трещины. Показана значимость эффекта для реальных лабораторных экспериментов. Разработан универсальный полуаналитический метод решения интегро-дифференциального уравнения теории упругости для плоских трещин нормального отрыва произвольной формы. Для проверки аналитических результатов построены численные модели МКЭ для трещин разной формы, например, для прямоугольной, внутренней полуэллиптической трещины, и др., и проведено сопоставление результатов. Проведены практические расчеты КИН во времени для элементов конструкций АЭС для разных сценариев прохождения аварийных ситуаций. Для этого создан ряд имитационных моделей со встроенной трещиной, для которой расчеты КИН проводили методами нелинейной механики разрушения. Для трещин, что проходят через наплавленный материал, где происходят скачки напряжений, обосновано применение метода функций влияния, для чего разработано аналитико-численную процедуру, что использует частично непрерывные базовые законы нагружения.
Books on the topic "Core baffle"
Emsley, John. Molecules at an Exhibition. Oxford University Press, 1998. http://dx.doi.org/10.1093/oso/9780198502661.001.0001.
Full textJames, Henry, and Ian Campbell Ross. The Europeans. Oxford University Press, 2009. http://dx.doi.org/10.1093/owc/9780199555635.001.0001.
Full textBook chapters on the topic "Core baffle"
Yasin, Saiful Bahri Mohd, Noor Faezah Mohd Sani, Salwa Adnan, Zahidahthorwazunah Zulkifli, Zuliahani Ahmad, and Sharifah Nafisah Syed Ismail. "Efficiency Cooling Channel at Core Side Incorporating with Baffle and Bubbler System." In Proceedings of the Second International Conference on the Future of ASEAN (ICoFA) 2017 – Volume 2, 515–22. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8471-3_51.
Full textBreslavsky, Dmytro, Alyona Senko, Oksana Tatarinova, Victor Voevodin, and Alexander Kalchenko. "Stress–Strain State of Nuclear Reactor Core Baffle Under the Action of Thermal and Irradiation Fields." In Advanced Structured Materials, 279–93. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75890-5_16.
Full textShulman, R. G. "Early Days of Biochemical NMR." In Biological NMR Spectroscopy. Oxford University Press, 1997. http://dx.doi.org/10.1093/oso/9780195094688.003.0008.
Full textEgan, David. "Introduction." In The Pursuit of an Authentic Philosophy, 1–12. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198832638.003.0010.
Full textAllison, Mark A. "“Society Is a Simple and Beautiful Science”." In Imagining Socialism, 34–75. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780192896490.003.0002.
Full textScott, D. B., P. J. Mudie, A. de Vernal, C. Hillaire-Marcel, V. Baki, K. D. MacKinnon, F. S. Medioli, and L. Mayer. "Lithostratigraphy, Biostratigraphy, and Stable Isotope Stratigraphy of Cores from ODP Leg 105 Site Surveys, Labrador Sea and Baffin Bay." In Proceedings of the Ocean Drilling Program, 105 Scientific Results. Ocean Drilling Program, 1989. http://dx.doi.org/10.2973/odp.proc.sr.105.169.1989.
Full textMaltman, Alex. "The Minerals that Make Rocks and Soils." In Vineyards, Rocks, and Soils. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190863289.003.0008.
Full textConference papers on the topic "Core baffle"
Pe´niguel, Christophe, Isabelle Rupp, Nathalie Ligneau, Michel Tommy-Martin, Laurent Beloeil, and Emmanuel Lemaire. "Thermal Analysis of a PWR Core Internal Baffle Structure." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93299.
Full textFilonova, Yuliia, Vladislav Filonov, and Yaroslav Dubyk. "Reactor Baffle Cooling CFD Framework for Swelling Assessment." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-82365.
Full textKhan, Jamil A., Jason Hinton, and Sarah C. Baxter. "Heat Transfer Enhancement With Inclined Baffles and Ribs Combined." In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/htd-24315.
Full textOryniak, Andrii, and Igor Orynyak. "Swelling of VVER-1000 Core Baffle: Numerical Modeling and Direct Measurement of its Geometrical Dimensions." In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-65769.
Full textShah, S. J., B. Brenneman, G. T. Williams, and J. H. Strumpell. "Water Confinement Effects in Response of Fuel Assembly to Faulted Condition Loads." In 12th International Conference on Nuclear Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/icone12-49566.
Full textChen, Yaping, Ruibing Cao, Jiafeng Wu, Cong Dong, and Yanjun Sheng. "Experimental Study on Shell Side Heat Transfer Performance of Circumferential Overlap Trisection Helical Baffle Heat Exchangers." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63254.
Full textSpadoni, Alessandro, and Massimo Ruzzene. "Structural and Acoustics Behavior of Chiral Truss-Core Beams." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61622.
Full textTakakura, Kenichi, Kiyotomo Nakata, Noboru Kubo, Koji Fujimoto, and Kimihisa Sakima. "IASCC Evaluation Method of Irradiated Cold Worked 316SS Baffle Former Bolt in PWR Primary Water." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77279.
Full textTakeuchi, Kimihito, Naoto Iizuka, Masashi Kameyama, Haruo Fujimori, Yuichi Motora, and Koji Koyama. "Inspection and Evaluation Guidelines for Light Water Reactor Core Internals in Japan." In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1174.
Full textChen, Jing, Dalin Zhang, Suizheng Qiu, Kui Zhang, Mingjun Wang, and G. H. Su. "CFD Investigation of Thermal-Hydraulic Behaviors in Full Reactor Core for Sodium-Cooled Fast Reactor." In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81626.
Full textReports on the topic "Core baffle"
Campbell, D. C., K. A. Jenner, J. Higgins, and D. J. W. Piper. Analysis of piston cores and high-resolution sub-bottom profiler data, Baffin Bay slope, Nunavut. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2017. http://dx.doi.org/10.4095/300835.
Full textBingham-Koslowski, N. Descriptions of drill cores and thin sections from lower Paleozoic strata, southeastern Baffin Island shelf, Nunavut. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2018. http://dx.doi.org/10.4095/308354.
Full textDafoe, L. T., and G L Williams. Lithological, sedimentological, ichnological, and palynological analysis of 37 conventional core intervals from 15 wells, offshore Labrador (Newfoundland and Labrador) and southeast Baffin Island (Nunavut). Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2020. http://dx.doi.org/10.4095/315362.
Full textBiostratigraphy and maturation of 17 Labrador and Baffin Shelf wells, volume 2: Bjarni 0-82 and Corte Real P-85. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/130623.
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