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Author : Hao Song
Publisher :
ISBN 13 :
Total Pages : 79 pages
Book Rating : 4.:/5 (733 download)
Download or read book Effects of Geometry on Turbulent Rayleigh-Bénard Convection written by Hao Song and published by . This book was released on 2011 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Javier Jiménez
Publisher : Springer Science & Business Media
ISBN 13 : 1461537509
Total Pages : 359 pages
Book Rating : 4.4/5 (615 download)
Download or read book The Global Geometry of Turbulence written by Javier Jiménez and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this Advanced Research Workshop was to bring together Physicists, Applied Mathematicians and Fluid Dynamicists, including very specially experimentalists, to review the available knowledge on the global structural aspects of turbulent flows, with an especial emphasis on open systems, and to try to reach a consensus on their possible relationship to recent advances in the understanding of the behaviour of low dimensional dynamical systems and amplitude equations. A lot has been learned during recent years on the non-equilibrium behaviour of low dimen sional dynamical systems, including some fluid flows (Rayleigh-Benard, Taylor-Couette, etc. ). These are mostly closed flows and many of the global structural features of the low dimensional systems have been observed in them, including chaotic behaviour, period doubling, intermit tency, etc. . It has also been shown that some of these flows are intrinsically low dimensional, which accounts for much of the observed similarities. Open flows seem to be different, and experimental observations point to an intrinsic high dimensionality. However, some of the tran sitional features of the low dimensional systems have been observed in them, specially in the intermittent behaviour of subcritical flows (pipes, channels, boundary layers with suction, etc. ), and in the large scale geometry of coherent structures of free shear flows (mixing layers, jets and wakes).
Author : Michael Stuart Thurlow
Publisher :
ISBN 13 :
Total Pages : 226 pages
Book Rating : 4.:/5 (643 download)
Download or read book Rayleigh-Benard Convection in a Rotating Liquid 3He-4He Mixture written by Michael Stuart Thurlow and published by . This book was released on 1993 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Andrés Alonso Castillo-Castellanos
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (12 download)
Download or read book Turbulent Convection in Rayleigh-Bénard Cells with Modified Boundary Conditions written by Andrés Alonso Castillo-Castellanos and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: One outstanding feature of the Rayleigh-Bénard problem which concerns a horizontal fluid layer heated from below and cooled from above, is the spontaneous establishment of spatial ordering and the formation of a coherent large-scale circulation. How different factors, such as the domain geometry and boundary conditions, influence the sizes and shapes of the large-scale flow remains an open question. Despite its apparent simplicity, Rayleigh-Bénard convection exhibits some incredibly rich and complex large-scale dynamics such as torsional modes, rotation, sloshing, and cessations, which often coexist and compete to each other. One approach, commonly used in the study of cessations is to constrain the large scale circulation to a plane by restricting the fluid domain to a (2-D) square cell or to a slim rectangular cell of small aspect ratio in the transversal direction. However, it is not entirely clear whether the 2-D and (quasi-)2-D reversals correspond to the same phenomenon. The present document is dedicated to the study of the large-scale flow patterns in turbulent Rayleigh-Bénard convection, and of the influence exerted by different factors on the flow structures and on their temporal evolution. The proposed characterization combines a statistical analysis with a physical approach relying on the angular momentum as well as the kinetic and potential energies to highlight the underlying physical mechanisms. We subsequently attempt to tie these mechanisms together to each of the distinctive flow patterns observed and to their evolution.
Author : Andreas Dillmann
Publisher : Springer Science & Business Media
ISBN 13 : 3319031589
Total Pages : 640 pages
Book Rating : 4.3/5 (19 download)
Download or read book New Results in Numerical and Experimental Fluid Mechanics IX written by Andreas Dillmann and published by Springer Science & Business Media. This book was released on 2014-01-25 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents contributions to the 18th biannual symposium of the German Aerospace Aerodynamics Association (STAB). The individual chapters reflect ongoing research conducted by the STAB members in the field of numerical and experimental fluid mechanics and aerodynamics, mainly for (but not limited to) aerospace applications, and cover both nationally and EC-funded projects. By addressing a number of essential research subjects, together with their related physical and mathematics fundamentals, the book provides readers with a comprehensive overview of the current research work in the field, as well as its main challenges and new directions. Current work on e.g. high aspect-ratio and low aspect-ratio wings, bluff bodies, laminar flow control and transition, active flow control, hypersonic flows, aeroelasticity, aeroacoustics and biofluid mechanics is exhaustively discussed here.
Author : Aditya Kumar
Publisher : Springer Nature
ISBN 13 : 981334248X
Total Pages : 230 pages
Book Rating : 4.8/5 (133 download)
Download or read book Thermal Characteristics and Convection in Nanofluids written by Aditya Kumar and published by Springer Nature. This book was released on 2021-01-04 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers synthesis, characterization, stability, heat transfer and applications of nanofluids. It includes different types of nanofluids, their preparation methods as well as its effects on the stability and thermophysical properties of nanofluids. It provides a discussion on the mechanism behind the change in the thermal properties of nanofluids and heat transfer behaviour. It presents the latest information and discussion on the preparation and advanced characterization of nanofluids. It also consists of stability analysis of nanofluids and discussion on why it is essential for the industrial application. The book provides a discussion on thermal boundary layer properties in convection. Future directions for heat transfer applications to make the production and application of nanofluids at industrial level are also discussed.
Author : J. Robert Buchler
Publisher :
ISBN 13 :
Total Pages : 176 pages
Book Rating : 4.X/5 (4 download)
Download or read book Astrophysical Turbulence and Convection written by J. Robert Buchler and published by . This book was released on 2000 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulence and convection are phenomena the existence of which has haunted astrophysicists because they pose such extremely difficult problems. The papers in this volume are taken from a conference held in February 1999 which brought together representatives of four different viewpoints: the computational physicist's numerical three-dimensional large-eddy simulations; theorists, who wish to simplify the equations into approximate, but useful one-dimensional recipes; astrophysicists, who see turbulence and convection as a subroutine; and experimentalists, who provide insights into what really happens at molecular levels in space - and keep everyone else honest.
Author : Susanne Horn
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (916 download)
Download or read book Rotation and Non-Oberbeck-Boussinesq Effects in Turbulent Rayleigh-Bénard Convection written by Susanne Horn and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hans Kuerten
Publisher : Springer Science & Business Media
ISBN 13 : 9400724829
Total Pages : 460 pages
Book Rating : 4.4/5 (7 download)
Download or read book Direct and Large-Eddy Simulation VIII written by Hans Kuerten and published by Springer Science & Business Media. This book was released on 2011-10-05 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume continues previous DLES proceedings books, presenting modern developments in turbulent flow research. It is comprehensive in its coverage of numerical and modeling techniques for fluid mechanics. After Surrey in 1994, Grenoble in 1996, Cambridge in 1999, Enschede in 2001, Munich in 2003, Poitiers in 2005, and Trieste in 2009, the 8th workshop, DLES8, was held in Eindhoven, The Netherlands, again under the auspices of ERCOFTAC. Following the spirit of the series, the goal of this workshop is to establish a state-of-the-art of DNS and LES techniques for the computation and modeling of transitional/turbulent flows covering a broad scope of topics such as aerodynamics, acoustics, combustion, multiphase flows, environment, geophysics and bio-medical applications. This gathering of specialists in the field was a unique opportunity for discussions about the more recent advances in the prediction, understanding and control of turbulent flows in academic or industrial situations.
Author : Michel Deville
Publisher : Springer
ISBN 13 : 9783642422515
Total Pages : 0 pages
Book Rating : 4.4/5 (225 download)
Download or read book Turbulence and Interactions written by Michel Deville and published by Springer. This book was released on 2014-10-15 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keynote Lectures.- Some Characteristics of Non-Reacting and Reacting Low Swirl Number Jets.- Inner-Outer Interactions in Wall-Bounded Turbulence.- Turbulence Interaction with Atmospheric Physical Processes.- LES of Pulsating Turbulent Flows over Smooth and Wavy Boundaries.- Numerical Study of Turbulence-Wave Interaction.- High Reynolds Number Wall-Bounded Turbulence and a Proposal for a New Eddy-Based Model.- Regular Papers.- PANS Methodology Applied to Elliptic-Relaxation Based Eddy Viscosity Transport Model.- PIV Study of Turbulent Flow in Porous Media.- A Model for Dissipation: Cascade SDE with Markov Regime-Switching and Dirichlet Prior.- Wavelet Analysis of the Turbulent LES Data of the Lid-Driven Cavity Flow.- A Two-Phase LES Compressible Model for Plasma-Liquid Jet Interaction.- Simulation of a Fluidized Bed Using a Hybrid Eulerian-Lagrangian Method for Particle Tracking.- Wavelet-Adapted Sub-grid Scale Models for LES.- Effect of Particle-Particle Collisions on the Spatial Distribution of Inertial Particles Suspended in Homogeneous Isotropic Turbulent Flows.- Effect of Near-Wall Componental Modification of Turbulence on Its Statistical Properties.- Large-Eddy Simulation of Transonic Buffet over a Supercritical Airfoil.- Large Eddy Simulation of Coherent Structures over Forest Canopy.- Toroidal/Poloidal Modes Dynamics in Anisotropic Turbulence.- Grid Filter Modeling for Large-Eddy Simulation.- Pulsating Flow through Porous Media.- Thermodynamic Fluctuations Behaviour during a Sheared Turbulence/Shock Interaction.- LES and DES Study of Fluid-Particle Dynamics in a Human Mouth-Throat Geometry.- Viscous Drag Reduction with Surface-Embedded Grooves.- Study on the Resolution Requirements for DNS in Turbulent Rayleigh-Bénard Convection.- On the Role of Coherent Structures in a Lid Driven Cavity Flow.- Local versus Nonlocal Processes in Turbulent Flows, Kinematic Coupling and General Stochastic Processes.- Time-Resolved 3D Simulation of an Aircraft Wing with Deployed High-Lift System.- Fluid Mechanics and Heat Transfer in a Channel with Spherical and Oval Dimples.- Investigation of the Flow around a Cylinder Plate Configuration with Respect to Aerodynamic Noise Generation Mechanisms.- LES of the Flow around Ahmed Body with Active Flow Control.- Enhanced Bubble Migration in Turbulent Channel Flow by an Acceleration-Dependent Drag Coefficient.- Experimental and Numerical Study of Unsteadiness in Boundary Layer / Shock Wave Interaction.- Measurement of Particle Accelerations with the Laser Doppler Technique.- A Novel Numerical Method for Turbulent, Two-Phase Flow.- Modeling of High Reynolds Number Flows with Solid Body Rotation or Magnetic Fields.- Direct Numerical Simulation of Buoyancy Driven Turbulence inside a Cubic Cavity.- Numerical Simulations of a Massively Separated Reactive Flow Using a DDES Approach for Turbulence Modelling.- Particle Dispersion in Large-Eddy Simulations: Influence of Reynolds Number and of Subgrid Velocity Deconvolution.- Use of Lagrangian Statistics for the Direct Analysis of the Turbulent Constitutive Equation.- Numerical Simulation of Supersonic Jet Noise with Overset Grid Techniques.- Large Eddy Simulation of Turbulent Jet Flow in Gas Turbine Combustors.- Computations of the Flow around a Wind Turbine: Grid Sensitivity Study and the Influence of Inlet Conditions.- Stochastic Synchronization of the Wall Turbulence.- Large-Eddy Simulations of an Oblique Shock Impinging on a Turbulent Boundary Layer: Effect of the Spanwise Confinement on the Low-Frequency Oscillations.- Parameter-Free Symmetry-Preserving Regularization Modelling of Turbulent Natural Convection Flows.- An a Priori Study for the Modeling of Subgrid Terms in Multiphase Flows.- Computation of Flow in a 3D Diffuser Using a Two-Velocity Field Hybrid RANS/LES.- On the Dynamics of High Reynolds Number Turbulent Axisymmetric and Plane Separating/Reattaching Flows.- Numerical Simulation and Statistical Modeling of Inertial Droplet Coalescence
Author : J. M. L. M. Palma
Publisher : Springer Science & Business Media
ISBN 13 : 3540726047
Total Pages : 825 pages
Book Rating : 4.5/5 (47 download)
Download or read book Advances in Turbulence XI written by J. M. L. M. Palma and published by Springer Science & Business Media. This book was released on 2008-01-08 with total page 825 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume comprises the communications presented at the ETC 11, the EUROMECH European Turbulence conference held in 2007 in Porto. The scientific committee has chosen the contributions out of the following topics: Acoustics of turbulent flows; Atmospheric turbulence; Control of turbulent flows; Geophysical and astrophysical turbulence; Instability and transition; Intermittency and scaling; Large eddy simulation and related techniques; MHD turbulence; Reacting and compressible turbulence; Transport and mixing; Turbulence in multiphase and non-Newtonian flows; Vortex dynamics and structure formation; Wall bounded flows.
Author : N. O. Weiss
Publisher : Cambridge University Press
ISBN 13 : 052119055X
Total Pages : 411 pages
Book Rating : 4.5/5 (211 download)
Download or read book Magnetoconvection written by N. O. Weiss and published by Cambridge University Press. This book was released on 2014-10-30 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: Leading experts present the current state of knowledge of the subject of magnetoconvection from the viewpoint of applied mathematics.
Author : Mohammad Shah Emran
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (845 download)
Download or read book Small-scale Statistics in Turbulent Rayleigh-Bénard Convection written by Mohammad Shah Emran and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jaime Klapp
Publisher : Springer
ISBN 13 : 3319114875
Total Pages : 542 pages
Book Rating : 4.3/5 (191 download)
Download or read book Selected Topics of Computational and Experimental Fluid Mechanics written by Jaime Klapp and published by Springer. This book was released on 2015-03-05 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains invited lectures and selected contributions presented at the Enzo Levi and XIX Annual Meeting of the Fluid Dynamic Division of the Mexican Physical Society in 2013. It is aimed at fourth year undergraduate and graduate students, and scientists in the fields of physics, engineering and chemistry who are interested in fluid dynamics from an experimental and theoretical point of view. The invited lectures are introductory and avoid the use of complicated mathematics. The fluid dynamics applications include multiphase flow, convection, diffusion, heat transfer, rheology, granular material, viscous flow, porous media flow, geophysics and astrophysics. The material contained in the book includes recent advances in experimental and theoretical fluid dynamics and is suitable for both teaching and research.
Author : Jin-Qiang Zhong
Publisher :
ISBN 13 :
Total Pages : 226 pages
Book Rating : 4.:/5 (122 download)
Download or read book Turbulent Rayleigh-Benard Convection with Freely Moving Boundary written by Jin-Qiang Zhong and published by . This book was released on 2006 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Hartmann
Publisher :
ISBN 13 : 9789036558259
Total Pages : 0 pages
Book Rating : 4.5/5 (582 download)
Download or read book Rotation and Confinement in Turbulent Rayleigh-Bénard Convection written by Robert Hartmann and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mebarek Belkadi
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (119 download)
Download or read book Numerical Modeling of Turbulent Convection in Rough Rayleigh-Bénard Cell written by Mebarek Belkadi and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulent convective flows over rough boundaries are ubiquitous in geophysical and engineering applications. Understanding the mechanisms of these interactions is substantial for improving the heat transfer efficiency. In this work we study the effects of wall roughness on the Rayleigh Bénard turbulence. Three dimensional direct numerical simulations (DNS) are performed using a parallel CFD code under the support of national high performance computers. The roughness elements are embedded over hotted surface using an immersed boundary method. The numerical configuration allow the identification of three successive regimes from a thermally resistant to highly enhanced heat transfer. Through a geometrical decomposition of the rough plate into plot and surrounding fluid, we examine their different behaviors, mainly the contribution to the heat transfer. We analyze the effects of roughness on thermal and viscous boundary layers structures and on the flow physics near the wall. Besides that, the comparison with experimental data at the roughness scale highlight the non homogeneity of thermal fluctuations around the obstacles. We also focused on the effects of roughness on the flow dynamics and on the properties of thermal plumes.
