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  • 1
    Monograph available for loan
    Monograph available for loan
    Large eddy simulation of complex engineering and geophysical flows (1993)
    Cambridge : Cambridge University Press
    Details Availability
    Call number: AWI A6-94-0217
    Type of Medium: Monograph available for loan
    Pages: XVII, 600 Seiten , Illustrationen
    Edition: First published
    ISBN: 0-521-43009-7
    Language: English
    Note: Contents Contributors page Preface Plates Part One: Fundamentals of Large Eddy Simulation 1 Some Historical Remarks on the Use of Nonlinear Viscosities / Joseph Smagorinsky 2 Subgrid-Scale Modeling / Joel H. Ferziger 3 Some Basic Challenges for Large Eddy Simulation Research / Steven A. Orszag, Ilya Staroselsky, and Victor Yakhot 4 Some Contributions of Two-Point Closure to Large Eddy Simulations / Jackson R. Herring and Robert M. Kerr 5 Stochastic Backscatter Formulation for three-Dimensional Compressible Flows / Cecil E. Leith Part Two: Large Eddy Simulation in Engineering 6 Applications of Large Eddy Simulations in Engineering: An Overview / Ugo Piomelli Incompressible Flows 7 Large Eddy Simulation of Scalar Transport with the Dynamic Subgrid-Scale Model / William Cabot and Parviz Moin 8 Renormalization Group Theory Simulation of Transitional and Turbulent Flow over a Backward-Facing Step / George E. Karniadakis, Steven A. Orszag, and Victor Yakhot 9 Spectral Large Eddy Simulation of Turbulent Shear Flows / Marcel Lesieur, Olivier Métais , Xavier Normand, and Aristeu Silveira-Neto 10 Anisotropic Representation of Subgrid-Scale Reynolds Stress in Large Eddy Simulation / Kiyosi Horiuti 11 Large Eddy Simulation of Transitional Flow / Thomas A. Zang and Ugo Piomelli Compressible and Reacting Flows 12 Direct Numerical Simulation and Large Eddy Simulation of Compressible Turbulence / Gordon Erlebacher and Mohammed Y. Hussaini 13 Large Eddy Simulation of Mixing Layers / Saad A. Ragab and Shaw-Ching Sheen 14 A Linear-Eddy Mixing Model for Large Eddy Simulation of Turbulent Combustion / Suresh Menon, Patrick A. McMurtry, and Alan R. Kerstein 15 Direct Numerical Simulation and Large Eddy Simulation of Reacting Homogeneous Turbulence / Cyrus K. Madnia and Peyman Givi Part Three: Large Eddy Simulation in Geophysics 16 Large Eddy Simulation in Geophysical Turbulence Parameterization: An Overview / John C. Wyngaard and Chin-Hoh Moeng Atmospheric Sciences 17 Using the Regional Atmospheric Modeling System in the Large Eddy Simulation Mode: From inhomogeneous Surfaces to Cirrus Clouds / William R. Cotton, Robert L. Walko, Keeley R. Costigan, Piotr J. Flatau, and Roger A. Pielke 18 Large Eddy Simulation of Turbulent Convection over Flat and Wavy Surfaces / Ulrich Schumann Physical Oceanography 19 The Role of Oceans in Climate Change: A Challenge to Large Eddy Simulation / Greg Holloway 20 Modeling the Oceanic Planetary Boundary Layer / James C. McWilliams, Patrick C. Gallacher, Chin-Hoh Moeng, and John C. Wyngaard 21 Diapycnal Mixing in the Ocean: A Review / Peter Müller 22 Near-Surface Mixing and the Ocean's Role in Climate / Mark A. Cane Environmental Flows 23 Conjunctive Filtering Procedures in Surface Water Flow and Transport / Keith W. Bedford and Woon K. Yeo 24 Leonard and Cross-Term Approximations in the Anisotropically Filtered Equations of Motion / Alvaro A. Aldama 25 Large Eddy Simulation as a Tool in Engineering and Geophysics: Panel Discussion / Thomas A. Zang Part Four: Large Eddy Simulation and Massively Parallel Computing 26 Parallel Computing for Large Eddy Simulation / Cecil E. Leith 27 Geophysical Fluid Dynamics, Large Eddy Simulation, and Massively Parallel Computing / William P. Dannevik Index
    Location: AWI Reading room
    Branch Library: AWI Library
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  • 2
    Electronic Resource
    Electronic Resource
    Eddy Rossby wave frequency in β-plane turbulence (1993)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 5 (1993), S. 2083-2085 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The concept of eddy viscosity is generalized to include an "eddy β-term'' that accounts for the effect of unresolved turbulence and Rossby waves on the resolved modes in the subgrid-scale representation of β-plane turbulence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.858547
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  • 3
    Electronic Resource
    Electronic Resource
    Universal n−5 spectrum of zonal flows on giant planets (2001)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 13 (2001), S. 1545-1548 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The energy spectra of the observed zonal flows on Jupiter and Saturn are shown to obey the scaling law EZ(n)=CZ(Ω/R)2n−5 in the range of total wave numbers n not affected by large scale friction (here, Ω and R are the rotation rate and the radius of the planet, and CZ is an order-one constant). These spectra broadly resemble their counterpart in recent simulations of turbulent flows on the surface of a rotating sphere [Huang et al., Phys. Fluids 13, 225 (2001)] that represents a strongly anisotropic flow regime evoked by the planetary vorticity gradient. It is conjectured that this regime governs the large scale circulations and the multiple zonal jets on giant planets. The observed strong equatorial jets that were not produced in the nearly inviscid simulations by Huang et al. are attributed to the combined effect of the energy condensation in the lowest zonal modes and the large scale friction. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1373684
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  • 4
    Electronic Resource
    Electronic Resource
    Large eddy simulation of two-dimensional isotropic turbulence (1996)
    Springer
    Journal of scientific computing 11 (1996), S. 13-45 
    Details
    ISSN: 1573-7691
    Keywords: Two-dimensional turbulence ; large-eddy simulation ; stabilized negative viscosity ; sub-grid scale ; energy transfer range
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract Large eddy simulation (LES) of forced, homogeneous, isotropic two-dimensional (2D) turbulence in the energy transfer subrange is the subject of this paper. A difficulty specific to this LES and its subgrid scale (SGS) representation is in that the energy source resides in high wave number modes excluded in simulations. Therefore, the SGS scheme in this case should assume the function of the energy source. In addition, the controversial requirements to ensure direct enstrophy transfer and inverse energy transfer make the conventional scheme of positive and dissipative eddy viscosity inapplicable to 2D turbulence. It is shown that these requirements can be reconciled by utilizing a two-parametric viscosity introduced by Kraichnan (1976) that accounts for the energy and enstrophy exchange between the resolved and subgrid scale modes in a way consistent with the dynamics of 2D turbulence; it is negative on large scales, positive on small scales and complies with the basic conservation laws for energy and enstrophy. Different implementations of the two-parametric viscosity for LES of 2D turbulence were considered. It was found that if kept constant, this viscosity results in unstable numerical scheme. Therefore, another scheme was advanced in which the two-parametric viscosity depends on the flow field. In addition, to extend simulations beyond the limits imposed by the finiteness of computational domain, a large scale drag was introduced. The resulting LES exhibited remarkable and fast convergence to the solution obtained in the preceding direct numerical simulations (DNS) by Chekhlovet al. (1994) while the flow parameters were in good agreement with their DNS counterparts. Also, good agreement with the Kolmogorov theory was found. This LES could be continued virtually indefinitely. Then, a simplified SGS representation was designed, referred to as the stabilized negative viscosity (SNV) representation, which was based on two algebraic terms only, negative Laplacian and positive biharmonic ones. It was found that the SNV scheme performed in a fashion very similar to the full equation and it was argued that this scheme and its derivatives should be applied for SGS representation in LES of quasi-2D flows.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02088948
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  • 5
    Electronic Resource
    Electronic Resource
    A second moment closure model for MHD turbulence (1989)
    Springer
    Zeitschrift für angewandte Mathematik und Physik 40 (1989), S. 740-757 
    Details
    ISSN: 1420-9039
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Description / Table of Contents: Zusammenfassung Ein Turbulenzmodell mit Schlieβung zweiter Ordnung, das bisher für Strömungen mit Dichteschichtung, rotierenden Bezugssystem und gekrümmten Stromlinien benutzt wurde, wird hier zur Beschreibung von MHD-Strömungen mit kleiner magnetischer Reynoldszahl erweitert. Es wird gezeigt, daβ alle drei Anordnungen eines konstanten, in einer Richtung verlaufenden Magnetfeldes (longitudinal, transversal und azimuthal) sowohl die Komponenten des Reynoldsschen Schubspannungstensors als auch die turbulente Energie reduzieren. Es werden Kriterien für die Auslöschung der 3D-Turbulenz abgeleitet, die auf der magnetischen Richardsonzahl beruhen, Für turbulente MHD-Strömungen wird eine Ähnlichkeitstheorie vom Monin-Obukhov Typ entwickelt. Der kombinierte Effekt von longitudinalen Magnetfeld und Rotation senkrecht zur Strömungsrichtung wird betrachtet. Die durch die elektromagnetische Kraft bewirkte zusätzliche Deformation wird im Vergleich zu den Effekten von Auftrieb, Rotation des Bezugssystems und Krümmung der Stromlinien diskutiert.
    Notes: Abstract A second moment turbulence closure model of the type used before for flows with density stratification, frame rotation and streamline curvature is augmented to describe MHD flows with small magnetic Reynolds number. It is shown that all three configurations of the constant unidirectional magnetic field (longitudinal, transverse and azimuthal) suppress the components of the Reynolds stress tensor as well as turbulence energy. Criterions are derived for the extinction of 3-D turbulence based on magnetic Richardson numbers. Monin-Obukhov type similarity theory is developed for MHD turbulent flows. The combined effect of longitudinal magnetic field and spanwise rotation is considered. A discussion is presented on the extra strains exerted by the electromagnetic force compared to the effects of buoyancy, frame rotation and streamline curvature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00945874
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  • 6
    Electronic Resource
    Electronic Resource
    The effects of streamline curvature and spanwise rotation on near-surface, turbulent boundary layers (1991)
    Springer
    Zeitschrift für angewandte Mathematik und Physik 42 (1991), S. 565-583 
    Details
    ISSN: 1420-9039
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Description / Table of Contents: Zusammenfassung Gemittelte Strömungsfelder und Turbulenzcharakteristiken werden bestimmt mittels eines numerischen Modelles mit Momenten zweiter Ordnung als Ciosure für lateral rotierende Strömungen und mit gekrümmten Stromlinien. Stabilisierungs- und Destabilisierungseffekte infolge Rotation und/oder Krümmung werden als Raleigh-Instabilitäten im Zusammenhang mit dem Modell diskutiert. Wenn angewandt auf die Konstant-Scherspannungszone in Grenzschichten, liefert das Modell eine Ähnlichkeitstheorie für Strömungen mit lateraler Rotation und Stromlinienkrümmung, vergleichbar dem Falle des Monin-Obukhov Modelles für geschichtete Strömungen. Es wird insbesondere gezeigt, dass Bradshaws empirische Längenkorrektur sich aus den Grundkonstanten des Modelles ergibt für den Grenzfall ohne Rotation und Krümmung. Direkter Vergleich mit experimentellen Daten bestätigt die Rechnungen. Die Definitionen von starker und schwacher Krümmung werden diskutiert und ein Unterscheidungskriterium eingeführt.
    Notes: Abstract A second moment closure model is used to study the mean fields and turbulence structure of spanwise rotating flows and flows with streamline curvature. The effects of flow stabilization and destabilization by rotation and/or curvature and their interpretation in terms of a Rayleigh instability mechanism are discussed in the context of the present model. When applied to the constant flux layer adjacent to a bounding surface, the model provides a similarity theory for flows with spanwise rotation and streamline curvature like that of Monin-Obukhov in the case of density stratified flows. In particular, it is shown that Bradshaw's empirical length scale correction can be derived in terms of the basic constants of the model determined in the absence of rotation and curvature. Also, direct comparisons with experimental data confirm the model predictions. The definitions of strong and mild curvature are discussed and a distinguishing criterion derived.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00946177
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  • 7
    Electronic Resource
    Electronic Resource
    A modified turbulent energy model for diffusion from elevated and ground point sources in neutral boundary layers (1986)
    Springer
    Boundary layer meteorology 37 (1986), S. 245-262 
    Details
    ISSN: 1573-1472
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A simple model for turbulent diffusion is proposed based on a turbulent energy model modified by Galperin and Hassid (1986) wherein local equilibrium in the concentration flux equation is assumed resulting in a turbulent diffusivity tensor. The early stage of plume development is simulated through adjustment of the integral length scale of diffusion. A simple semi-empirical formulation is also proposed for the dissipation length scale of concentration variance. Although it is substantially simpler than that of Sykes et al. (1984), the model is shown to compare well with the measurements of Fackrell and Robins (1982a, b).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00122987
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  • 8
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    Validation of atmospheric reanalyses in the Antarctic Peninsula region (2012)
    In:  EPIC3SCAR Open Science Conference, Portland, Oregon, USA, 2012-07-16-2012-07-19
    Details
    Publication Date: 2017-10-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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  • 9
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    Eddy–wave duality in a rotating flow (2020)
    American Institute of Physics
    Details
    Publication Date: 2020-07-01
    Print ISSN: 1070-6631
    Electronic ISSN: 1089-7666
    Topics: Physics
    Published by American Institute of Physics
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  • 10
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    Anisotropic spectra in two-dimensional turbulence on the surface of a rotating sphere (2001)
    American Institute of Physics
    Details
    Publication Date: 2001-01-01
    Print ISSN: 1070-6631
    Electronic ISSN: 1089-7666
    Topics: Physics
    Published by American Institute of Physics
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