Download or read book Modeling Plasma Systems Using a Domain hybridized Physical Model written by Andrew Ho and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasma models have regions of validity that depend on local parameters.In some problems a computationally expensive, high-fidelity model is required in a small subset of the domain while lower-cost reduced models can adequately describe the plasma behavior everywhere else. The goal of this research is to investigate methods for spatially coupling the various plasma models such that the simplest plasma model that is locally valid can maintain global physical fidelity while improving computational efficiency. This research has two primary components. The first component is investigating numerical methods which can efficiently couple the various plasma models. Mixed implicit-explicit (ImEx) temporal solution schemes are investigated to produce schemes which are numerically stable when the time scales of interest span several orders of magnitude, and the physics of interest is dominated by long time scale physics. The spatial discretization method of choice is based on the discontinuous Galerkin (DG) method. Traditional DG methods are capable of producing numerical schemes with high spatial accuracy, but produce large and stiff implicit systems. To address this deficiency, the traditional DG scheme is augmented with a hybridized discontinuous Galerkin (HDG) scheme which is specifically designed to handle implicit temporal schemes. The second component of this research is investigating methods for making the plasma model dynamically (re-)decomposed based on local plasma conditions to produce an adaptive scheme. These metrics can be derived by examining the mathematical differences between the plasma models. This approach allows the determination of relative scale on which non-charge-neutral effects are significant, as well as which metrics are dependent on local gradients or purely on local conditions. Key metrics comparing the MHD and two-fluid models include examining charge neutrality, two-temperature effects, Hall effects, and finite-electron-mass effects.
Download or read book A Domain hybridized Plasma Model Using Discontinuous Galerkin Finite Elements written by Iman Datta and published by . This book was released on 2021 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasmas are found all over the Universe and exhibit varying properties depending on temperature, density, field strength, and collisionality. Thus, various physics models can be used to describe plasma dynamics. This work uses the WARPXM discontinuous Galerkin finite element framework developed at the University of Washington to develop a domain-hybridized model incorporating MHD, multi-fluid, and continuum kinetic models to perform simulations in which different models are applied in different subdomains on an unstructured mesh, dictated by the underlying physics. As part of this work, the MHD and continuum kinetic models are developed, the latter in up to 2D2V using a duoprism phase space element constructed from tensor products of triangular elements in an unstructured physical space and lines in velocity space. The hybrid model is formulated using two methods. The first is a direct variable translation method which converts variables at model interfaces to be consistent with the lower fidelity model. The second is a conservative method which ensures the flux at model boundaries are equal and opposite for the adjacent models. The coupling between the continuum kinetic model and the multi-fluid model is specifically studied in this work using a variety of simulations to test these coupling methods.
Download or read book The Hybrid Multiscale Simulation Technology written by Alexander S. Lipatov and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive description of hybrid plasma simulation models providing a very useful summary and guide to the vast literature on this topic.
Download or read book FY US Air Force Plan for Defense Research Sciences written by and published by . This book was released on 1983 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plasmonic Nanoelectronics and Sensing written by Er-Ping Li and published by Cambridge University Press. This book was released on 2014-02-13 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview, from fundamental theory and numerical methods to the design of real plasmonic structures for nanoelectronic and sensing applications.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992-11 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2003 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nanoparticle Technology Handbook written by Makio Naito and published by Elsevier. This book was released on 2018-03-06 with total page 906 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoparticle Technology Handbook, Third Edition, is an updated and expanded authoritative reference providing both the theory behind nanoparticles and the practical applications of nanotechnology. This third edition features twenty new chapters, providing a reference much broader in scope than the previous edition. Over 140 experts in nanotechnology and/or particle technology contributed to this new edition. The book not only includes the theory behind nanoparticles, but also the practical applications of nanotechnology. It examines future possibilities and new innovations and contains important knowledge on nanoparticle characterization and the effect of nanoparticles on the environment and humans. Nanoparticle technology is a new and revolutionary technology, which is increasingly used in electronic devices and nanomaterials. It handles the preparation, processing, application and characterization of nanoparticles and has become the core of nanotechnology as an extension of conventional fine particle/powder technology. Nanoparticle technology plays an important role in the implementation of nanotechnology in many engineering and industrial fields, including electronic devices, advanced ceramics, new batteries, engineered catalysts, functional paint and ink, drug delivery system, biotechnology, etc., making use of the unique properties of nanoparticles, which are completely different from those of bulk materials. Introduces all aspects of nanoparticle technology, from the fundamentals to applications Cover basic information on preparation through to the characterization of nanoparticles in a systematic way Features information on nanostructures, which play an important role in practical applications Includes the effects of nanoparticles on human health and the environment Includes applications of nanoparticles in diverse fields, including applications in new areas, such as electronics cosmetics, etc. Offers up-to-date information given by specialists in each field
Download or read book Energy Research Abstracts written by and published by . This book was released on 1986 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Download or read book Physical Review written by and published by . This book was released on 1993 with total page 1486 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publishes papers that report results of research in statistical physics, plasmas, fluids, and related interdisciplinary topics. There are sections on (1) methods of statistical physics, (2) classical fluids, (3) liquid crystals, (4) diffusion-limited aggregation, and dendritic growth, (5) biological physics, (6) plasma physics, (7) physics of beams, (8) classical physics, including nonlinear media, and (9) computational physics.
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1998 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plasmonics Fundamentals and Applications written by Stefan Alexander Maier and published by Springer Science & Business Media. This book was released on 2007-05-16 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Considered a major field of photonics, plasmonics offers the potential to confine and guide light below the diffraction limit and promises a new generation of highly miniaturized photonic devices. This book combines a comprehensive introduction with an extensive overview of the current state of the art. Coverage includes plasmon waveguides, cavities for field-enhancement, nonlinear processes and the emerging field of active plasmonics studying interactions of surface plasmons with active media.
Download or read book Index Medicus written by and published by . This book was released on 2004 with total page 1876 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.
Download or read book Space Weather written by Paul Song and published by American Geophysical Union. This book was released on 2001-01-09 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Space weather is considered to be conditions on the Sun and in the solar wind, magnetosphere, ionosphere, and thermosphere that can influence the reliability and performance of space-borne or ground- based technological systems. Song (environmental earth and atmospheric sciences, U. of Massachusetts), Singer (Space Environment Center, National Oceanic and Atmospheric Administration), and Siscoe (Center for Space Physics, Boston U.) present 50 articles on current understanding and advances in the description and prediction of space weather. Nine of the articles, accessible to non-specialists, touch upon broad issues of space weather in the area of technology, science, industry, and commerce. The remaining articles are geared more towards the scientific community and address the sun and its influence on space weather, specification and prediction of the magnetosphere, and specification and prediction of the ionosphere and thermosphere. Annotation copyrighted by Book News, Inc., Portland, OR.
Download or read book Plasma Catalysis written by Annemie Bogaerts and published by MDPI. This book was released on 2019-04-02 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasma catalysis is gaining increasing interest for various gas conversion applications, such as CO2 conversion into value-added chemicals and fuels, N2 fixation for the synthesis of NH3 or NOx, methane conversion into higher hydrocarbons or oxygenates. It is also widely used for air pollution control (e.g., VOC remediation). Plasma catalysis allows thermodynamically difficult reactions to proceed at ambient pressure and temperature, due to activation of the gas molecules by energetic electrons created in the plasma. However, plasma is very reactive but not selective, and thus a catalyst is needed to improve the selectivity. In spite of the growing interest in plasma catalysis, the underlying mechanisms of the (possible) synergy between plasma and catalyst are not yet fully understood. Indeed, plasma catalysis is quite complicated, as the plasma will affect the catalyst and vice versa. Moreover, due to the reactive plasma environment, the most suitable catalysts will probably be different from thermal catalysts. More research is needed to better understand the plasma–catalyst interactions, in order to further improve the applications.
Download or read book Cumulated Index Medicus written by and published by . This book was released on 2000 with total page 1840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plasma Modeling written by Gianpiero Colonna and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasma Modeling: Methods and applications presents and discusses the different approaches that can be adopted for plasma modeling, giving details about theoretical and numerical methods. It describes kinetic models used in plasma investigations, develops the theory of fluid equations and hybrid models, and discusses applications and practical problems across a range of fields. This updated second edition contains over 200 pages of new material, including an extensive new part that discusses methods to calculate data needed in plasma modeling, such as thermodynamic and transport properties, state specific rate coefficients in heavy particle collisions and electron impact cross-sections. This updated research and reference text is an excellent resource to assist and direct students and researchers who want to develop research activity in the field of plasma physics in the choice of the best model for the problem of interest.
