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Nuclear Fusion Current Lead High Temperature Superconductor Numerical Simulation Computational Thermal Fluid Dynamics
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Book Synopsis Nuclear fusion, current lead, High Temperature Superconductor, Numerical simulation, Computational thermal Fluid Dynamics by : Rizzo, Enrico
Download or read book Nuclear fusion, current lead, High Temperature Superconductor, Numerical simulation, Computational thermal Fluid Dynamics written by Rizzo, Enrico and published by KIT Scientific Publishing. This book was released on 2014-03-27 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Techniques based on numerical simulations have been applied to the analysis of the heat exchanger and the High Temperature Superconductor (HTS) module of HTS current leads. In the first case correlations have been derived for the meander flow geometry. In the second case steady state and transient thermal-electric models have been validated. Both techniques are used to design and optimize HTS current leads. The correlations were applied to a predictive analysis of the ITER HTS current leads.
Book Synopsis Simulations for the Optimization of High Temperatur Superconductor Current Leads for Nuclear Fusion Applications by : Enrico Rizzo
Download or read book Simulations for the Optimization of High Temperatur Superconductor Current Leads for Nuclear Fusion Applications written by Enrico Rizzo and published by . This book was released on 2020-10-09 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Techniques based on numerical simulations have been applied to the analysis of the heat exchanger and the High Temperature Superconductor (HTS) module of HTS current leads. In the first case correlations have been derived for the meander flow geometry. In the second case steady state and transient thermal-electric models have been validated. Both techniques are used to design and optimize HTS current leads. The correlations were applied to a predictive analysis of the ITER HTS current leads. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.
Book Synopsis Numerical Modeling Of Superconducting Applications: Simulation Of Electromagnetics, Thermal Stability, Thermo-hydraulics And Mechanical Effects In Large-scale Superconducting Devices by : Bertrand Dutoit
Download or read book Numerical Modeling Of Superconducting Applications: Simulation Of Electromagnetics, Thermal Stability, Thermo-hydraulics And Mechanical Effects In Large-scale Superconducting Devices written by Bertrand Dutoit and published by World Scientific. This book was released on 2023-03-24 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to present an introduction to numerical modeling of different aspects of large-scale superconducting applications: electromagnetics, thermal, mechanics and thermo-hydraulics. The importance of computational modeling to advance current superconductor research cannot be overlooked, especially given the enormous benefits provided by superconductors in many human endeavours, including energy generation, medical treatments, and future electrical technologies.Aimed at graduate students, researchers and practitioners in different fields of applied superconductivity, this book consists of four chapters. The chapter on electromagnetics provides a review of the state-of-the-art modeling of electromagnetic phenomena in superconductors, emphasising the theoretical aspects of the different numerical formulations. This is followed by a chapter on thermal effects, dedicated to the simulation of thermal stability and quench in superconducting magnets, with specific examples of magnets used in particle accelerators. Then, the chapter on mechanics provides details of the modeling of forces and stresses in cables composed of second-generation high-temperature superconducting wires. Finally, the chapter on thermo-hydraulics focuses on the fundamental thermal-hydraulic aspects involved in the cooling of superconducting magnets, with special reference to the issues related to the forced-flow cooling.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Applications of High Temperature Superconductors to Electric Power Equipment by : Swarn S. Kalsi
Download or read book Applications of High Temperature Superconductors to Electric Power Equipment written by Swarn S. Kalsi and published by John Wiley & Sons. This book was released on 2011-04-18 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only one-stop reference to design, analysis, and manufacturing concepts for power devices utilizing HTS. High temperature superconductors (HTS) have been used for building many devices for electric grids worldwide and for large ship propulsion motors for the U.S. Navy. And yet, there has been no single source discussing theory and design issues relating to power applications of HTS—until now. This book provides design and analysis for various devices and includes examples of devices built over the last decade. Starting with a complete overview of HTS, the subsequent chapters are dedicated to specific devices: cooling and thermal insulation systems; rotating AC and DC machines; transformers; fault current limiters; power cables; and Maglev transport. As applicable, each chapter provides a history of the device, principles, configuration, design and design challenges, prototypes, and manufacturing issues, with each ending with a summary of the material covered. The design analysis and design examples provide critical insight for readers to successfully design their own devices. Original equipment manufacturer (OEM) designers, industry and utilities users, universities and defense services research groups, and senior/postgraduate engineering students and instructors will rely on this resource. "HTS technology reduces electric losses and increases the efficiency of power equipment. This book by Swarn Kalsi, a leading expert on the HTS subject, provides a survey of the HTS technology and the design rules, performance analyses, and manufacturing concepts for power application-related devices. It compares conventional and HTS technology approaches for device design and provides significant examples of devices utilizing the HTS technology today. The book is useful for a broad spectrum of professionals worldwide: students, teaching staff, and OEM designers as well as users in industry and electric utilities." —Professor Dr. Rolf Hellinger, Research and Technologies Corporate Technology, Siemens AG
Book Synopsis Computational Modelling of the HyperVapotron Cooling Technique for Nuclear Fusion Applications by : Joseph Milnes
Download or read book Computational Modelling of the HyperVapotron Cooling Technique for Nuclear Fusion Applications written by Joseph Milnes and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Efficient heat transfer technologies are essential for magnetically confined fusionreactors; this applies to both the current generation of experimental reactors as well asfuture power plants. A number of High Heat Flux devices have therefore been developedspecifically for this application. One of the most promising candidates is theHyperVapotron, a water cooled device which relies on internal fins and boiling heattransfer to maximise the heat transfer capability. Over the past 30 years, numerous variations of the HyperVapotron have been built andtested at fusion research centres around the globe resulting in devices that can nowsustain heat fluxes in the region of 20? 30MW/m2 in steady state. Unfortunately, therehave been few attempts to model or understand the internal heat transfer mechanismsresponsible for this exceptional performance with the result that design improvements aretraditionally sought experimentally which is both inefficient and costly. This thesis seeks to develop an engineering model of the HyperVapotron device usingcommercial Computational Fluid Dynamics software. To establish the most appropriatemodelling choices, in-depth studies were performed examining the turbulence models(within the Reynolds Averaged Navier Stokes framework), near wall methods, gridresolution and boiling submodels. Validation of the models is accomplished via comparison with experimental results aswell as high order Implicit Large Eddy Simulation methods. It is shown that single phasecavity flows and their related heat transfer characteristics (time-averaged) can beaccurately captured if the SST k-omega turbulence model is employed using a fine nearwallgrid throughout the cavity (e.g. y+
Book Synopsis Simulation and Optimization of High Temperature Superconductor Based Electromagnetic Systems by : Rajeev Das
Download or read book Simulation and Optimization of High Temperature Superconductor Based Electromagnetic Systems written by Rajeev Das and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The application of superconductors has always fascinated engineers because of their ability to provide very small resistive losses. Electric machines developed using superconductors provide the advantage of lower volume, and higher efficiency compared to conventional machines with similar specifications.High temperature superconductors (HTS) display the property of superconductivity at relatively higher temperatures compared to conventional superconductors. The use of HTS in electric machines provides substantial benefits in terms of less energy spent on refrigeration. In the field of computational electromagnetics, HTS in low frequency devices pose a few unique challenges that demand different approaches from the existing techniques applied in normal materials and conventional superconducting materials. This dissertation investigates the properties of HTS and then attempts to address various issues that arise while modeling and optimizing HTS based devices.The high degree of non-linearity in HTS presents significant difficulty for a solution to converge. This thesis models the behavior of HTS based low frequency examples, and suggests an approach that improves the convergence and reduces the computation time. In this effort, the successive substitution method and the Aitken approximation were used to develop the proposed algorithm.Subsequently, a multiphysics model of HTS based current leads was developed. To analyze the magnetic field problem, a 2D technique was considered, and the analysis of thermal behavior used a 3D approach. This study helped in determining the approach to solve both types of field problems associated with current leads and coupling the two sets of problems.Computational approaches to solve HTS based problems are still in their infancy and there is a shortage of data in this field. In order to generate more data, which could then be used in optimization or modeling of HTS devices, this work examined statistical methods that could be applied in such scenarios. In this thesis, aspects such as sampling methods of search space and methods to construct surrogates were researched; the use of Latin hypercube sampling (LHS) and Generalized Regression Neural Network (GRNN) are proposed.This dissertation ultimately considers a real world example of HTS current leads to address some of the challenges associated with them, specifically the reduction of heat leakage, the material used and the AC loss. To achieve these three goals, multi-objective optimization was considered and Differential Evolution (DE), a stochastic based technique was used to achieve the optimization goals. This facet of the thesis establishes the viability of stochastic methods to optimize systems with multiple goals to satisfy and having HTS a highly non-linear material in them, along with the possible objective functions and constraint relations." --
Book Synopsis Bulletin de L'Institut International Du Froid by :
Download or read book Bulletin de L'Institut International Du Froid written by and published by . This book was released on 2005 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Simulation of Realistic High-temperature Superconductors by :
Download or read book Numerical Simulation of Realistic High-temperature Superconductors written by and published by . This book was released on 1997 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the main obstacles in the development of practical high-temperature superconducting (HTS) materials is dissipation, caused by the motion of magnetic flux quanta called vortices. Numerical simulations provide a promising new approach for studying these vortices. By exploiting the extraordinary memory and speed of massively parallel computers, researchers can obtain the extremely fine temporal and spatial resolution needed to model complex vortex behavior. The results may help identify new mechanisms to increase the current-capability capabilities and to predict the performance characteristics of HTS materials intended for industrial applications.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1996 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1993 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government reports annual index by :
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1993 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1983 with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fusion Engineering written by and published by . This book was released on 1986 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
