FAA reauthorization : certification and U.S. Aviation manufacturing competitiveness : hearing before the Subcommittee on Aviation Operations, Safety, and Security of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Fourteenth Congress, first session, April 21, 2015

• Record Nr.: UNINA9910704176803321
• Pubbl/distr/stampa: Washington : , : U.S. Government Publishing Office, , 2015
• Descrizione fisica: 1 online resource (iii, 51 pages)
• Collana: S. hrg. ; ; 114-109
• Soggetti: Aircraft industry - Certification - United States; Aircraft industry - Economic aspects - United States; Delegated legislation - United States; Aeronautics, Commercial - Economic aspects - United States; Competition, International; Legislative hearings.
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Title from title screen (viewed on Nov. 23, 2015).; Paper version available for sale by the Superintendent of Documents, United States Government Publishing Office.
• Nota di bibliografia: Includes bibliographical references.

A New Hypothesis on the Anisotropic Reynolds Stress Tensor for Turbulent Flows : Volume I: Theoretical Background and Development of an Anisotropic Hybrid k-omega Shear-Stress Transport/Stochastic Turbulence Model / / by László Könözsy

• Record Nr.: UNINA9910337631103321
• Autore: Könözsy László
• Pubbl/distr/stampa: Cham : , : Springer International Publishing : , : Imprint : Springer, , 2019
• ISBN: 3-030-13543-8
• Edizione: [1st ed. 2019.]
• Descrizione fisica: 1 online resource (152 pages)
• Collana: Fluid Mechanics and Its Applications, , 0926-5112 ; ; 120
• Disciplina: 532.0527015118
• Soggetti: Fluid mechanics; Fluids; Computer science - Mathematics; Probabilities; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Computational Science and Engineering; Probability Theory and Stochastic Processes
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Nota di contenuto: 1 Introduction -- 1.1 Historical Background and Literature Review -- 1.2 Governing Equations of Incompressible Turbulent Flows -- 1.3 Summary -- References -- 2 Theoretical Principles and Galilean Invariance -- 2.1 Introduction -- 2.2 Basic Principles of Advanced Turbulence Modelling -- 2.3 Summary -- References -- 3 The k-w Shear-Stress Transport (SST) Turbulence Model -- 3.1 Introduction -- 3.2 Mathematical Derivations -- 3.3 Governing Equations of the k-w SST Turbulence Model -- 3.4 Summary -- References -- 4 Three-Dimensional Anisotropic Similarity Theory of Turbulent Velocity Fluctuations -- 4.1 Introduction -- 4.2 Similarity Theory of Turbulent Oscillatory Motions -- 4.3 Summary -- References -- 5 A New Hypothesis on the Anisotropic Reynolds Stress Tensor -- 5.1 Introduction -- 5.2 The Anisotropic Reynolds Stress Tensor -- 5.3 An ; Anisotropic Hybrid k-w SST/STM Closure Model for Incompressible Flows -- 5.4 Governing Equations of the Anisotropic Hybrid k-w SST/STM Closure Model -- 5.5 On the Implementation of the Anisotropic Hybrid k-w SST/STM Turbulence Model -- 5.6 Summary -- References -- Appendices: Additional Mathematical Derivations -- A.1 The Unit Base Vectors of the Fluctuating OrthogonalCoordinate System -- A.2 Galilean Invariance of the Unsteady Fluctuating VorticityTransport Equation -- A.3 The Deviatoric Part of the Similarity Tensor.
• Sommario/riassunto: This book gives a mathematical insight--including intermediate derivation steps--into engineering physics and turbulence modeling related to an anisotropic modification to the Boussinesq hypothesis (deformation theory) coupled with the similarity theory of velocity fluctuations. Through mathematical derivations and their explanations, the reader will be able to understand new theoretical concepts quickly, including how to put a new hypothesis on the anisotropic Reynolds stress tensor into engineering practice. The anisotropic modification to the eddy viscosity hypothesis is in the center of research interest, however, the unification of the deformation theory and the anisotropic similarity theory of turbulent velocity fluctuations is still missing from the literature. This book brings a mathematically challenging subject closer to graduate students and researchers who are developing the next generation of anisotropic turbulence models. Indispensable for graduate students, researchers and scientists in fluid mechanics and mechanical engineering.

Data Science : 6th International Conference of Pioneering Computer Scientists, Engineers and Educators, ICPCSEE 2020, Taiyuan, China, September 18-21, 2020, Proceedings, Part I / / edited by Jianchao Zeng, Weipeng Jing, Xianhua Song, Zeguang Lu

• Record Nr.: UNINA9910416081203321
• Pubbl/distr/stampa: Singapore : , : Springer Nature Singapore : , : Imprint : Springer, , 2020
• ISBN: 981-15-7981-4
• Edizione: [1st ed. 2020.]
• Descrizione fisica: 1 online resource (XXV, 720 p. 348 illus., 227 illus. in color.)
• Collana: Communications in Computer and Information Science, , 1865-0937 ; ; 1257
• Disciplina: 006.3
• Soggetti: Data mining; Artificial intelligence; Application software; Computer networks; Computer systems; Data structures (Computer science); Information theory; Data Mining and Knowledge Discovery; Artificial Intelligence; Computer and Information Systems Applications; Computer Communication Networks; Computer System Implementation; Data Structures and Information Theory
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Includes index.
• Nota di contenuto: Database -- Machine Learning -- Network -- Graphic images -- System.
• Sommario/riassunto: The chapter “Highly Parallel SPARQL Engine for RDF” is available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.