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Structure And Proper Orthogonal Decomposition In Simulations Of Wall Bounded Turbulent Shear Flows With Canonical Geometries
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Book Synopsis Structure and Proper Orthogonal Decomposition in Simulations of Wall-bounded Turbulent Shear Flows with Canonical Geometries by : Jon Ronald Baltzer
Download or read book Structure and Proper Orthogonal Decomposition in Simulations of Wall-bounded Turbulent Shear Flows with Canonical Geometries written by Jon Ronald Baltzer and published by . This book was released on 2012 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural features of canonical wall-bounded turbulent flows are described using several techniques, including proper orthogonal decomposition (POD). The canonical wall-bounded turbulent flows of channels, pipes, and flat-plate boundary layers include physics important to a wide variety of practical fluid flows with a minimum of geometric complications. Yet, significant questions remain for their turbulent motions' form, organization to compose very long motions, and relationship to vortical structures. POD extracts highly energetic structures from flow fields and is one tool to further understand the turbulence physics. A variety of direct numerical simulations provide velocity fields suitable for detailed analysis. Since POD modes require significant interpretation, this study begins with wall-normal, one-dimensional POD for a set of turbulent channel flows. Important features of the modes and their scaling are interpreted in light of flow physics, also leading to a method of synthesizing one-dimensional POD modes. Properties of a pipe flow simulation are then studied via several methods. The presence of very long streamwise motions is assessed using a number of statistical quantities, including energy spectra, which are compared to experiments. Further properties of energy spectra, including their relation to fictitious forces associated with mean Reynolds stress, are considered in depth. After reviewing salient features of turbulent structures previously observed in relevant experiments, structures in the pipe flow are examined in greater detail. A variety of methods reveal organization patterns of structures in instantaneous fields and their associated vortical structures. Properties of POD modes for a boundary layer flow are considered. Finally, very wide modes that occur when computing POD modes in all three canonical flows are compared. The results demonstrate that POD extracts structures relevant to characterizing wall-bounded turbulent flows. However, significant care is necessary in interpreting POD results, for which modes can be categorized according to their self-similarity. Additional analysis techniques reveal the organization of smaller motions in characteristic patterns to compose very long motions in pipe flows. The very large scale motions are observed to contribute large fractions of turbulent kinetic energy and Reynolds stress. The associated vortical structures possess characteristics of hairpins, but are commonly distorted from pristine hairpin geometries.
Book Synopsis Turbulent Structures in Wall-bounded Shear Flows Observed Via Three-dimensional Numerical Simulators by :
Download or read book Turbulent Structures in Wall-bounded Shear Flows Observed Via Three-dimensional Numerical Simulators written by and published by . This book was released on 1980 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamics and Scaling of Wall-bounded Shear Turbulence Through the Proper Orthogonal Decomposition by : Nadine Aubry
Download or read book Dynamics and Scaling of Wall-bounded Shear Turbulence Through the Proper Orthogonal Decomposition written by Nadine Aubry and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Simulation of Wall-bounded Turbulent Shear Flows by :
Download or read book Numerical Simulation of Wall-bounded Turbulent Shear Flows written by and published by . This book was released on 1982 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Structure of Turbulent Shear Flow by : A. A. R. Townsend
Download or read book The Structure of Turbulent Shear Flow written by A. A. R. Townsend and published by Cambridge University Press. This book was released on 1976 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: Develops a physical theory from the mass of experimental results, with revisions to reflect advances of recent years.
Book Synopsis On the Structure of Wall-bounded Turbulent Flows by :
Download or read book On the Structure of Wall-bounded Turbulent Flows written by and published by . This book was released on 1983 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling of Wall-bounded Complex Flows and Free Shear Flows by : Tsan-Hsing Shih
Download or read book Modeling of Wall-bounded Complex Flows and Free Shear Flows written by Tsan-Hsing Shih and published by . This book was released on 1994 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis DNS of Wall-Bounded Turbulent Flows by : Tapan K. Sengupta
Download or read book DNS of Wall-Bounded Turbulent Flows written by Tapan K. Sengupta and published by Springer. This book was released on 2019-02-09 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights by careful documentation of developments what led to tracking the growth of deterministic disturbances inside the shear layer from receptivity to fully developed turbulent flow stages. Associated theoretical and numerical developments are addressed from basic level so that an uninitiated reader can also follow the materials which lead to the solution of a long-standing problem. Solving Navier-Stokes equation by direct numerical simulation (DNS) from the first principle has been considered as one of the most challenging problems of understanding what causes transition to turbulence. Therefore, this book is a very useful addition to advanced CFD and advanced fluid mechanics courses.
Book Synopsis Study of Canonical Wall-bounded Turbulent Flows by : Kapil A. Chauhan
Download or read book Study of Canonical Wall-bounded Turbulent Flows written by Kapil A. Chauhan and published by . This book was released on 2007 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Direct Numerical Simulation of Turbulent Wall-bounded Flows in Moderately Complex Geometries by : Alvaro Vidal Torreira
Download or read book Direct Numerical Simulation of Turbulent Wall-bounded Flows in Moderately Complex Geometries written by Alvaro Vidal Torreira and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis On Wall-bounded Turbulent Shear Flows by : Martin Wosnik
Download or read book On Wall-bounded Turbulent Shear Flows written by Martin Wosnik and published by . This book was released on 2000 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Simulation of Bypass Transition to Turbulence in Wall Bounded Shear Flows by : Anders Lundbladh
Download or read book Simulation of Bypass Transition to Turbulence in Wall Bounded Shear Flows written by Anders Lundbladh and published by . This book was released on 1993 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Control of Wall-bounded Turbulent Shear Flows Using Modern Control Theory by : Junwoo Lim
Download or read book Control of Wall-bounded Turbulent Shear Flows Using Modern Control Theory written by Junwoo Lim and published by . This book was released on 2003 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Rapid-distortion-theory Turbulence Model for Developed Unsteady Wall-bounded Flow by :
Download or read book A Rapid-distortion-theory Turbulence Model for Developed Unsteady Wall-bounded Flow written by and published by . This book was released on 1993 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Workshop on Engineering Turbulence Modeling by :
Download or read book Workshop on Engineering Turbulence Modeling written by and published by . This book was released on 1992 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Two-level Simulations of High-reynolds Number Wall Bounded Shear Flows by : Suresh Menon
Download or read book Two-level Simulations of High-reynolds Number Wall Bounded Shear Flows written by Suresh Menon and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Turbulence Structure of Wall Shear Flow by : Jun De Li
Download or read book The Turbulence Structure of Wall Shear Flow written by Jun De Li and published by . This book was released on 1989 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: