Numerical Simulation Of Separated Flows Past Bluff Bodies
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Numerical Simulation Of Separated Flows Past Bluff Bodies
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Author : Andreas Neophytou Alexandrou
language : en
Publisher:
Release Date : 1987
Numerical Simulation Of Separated Flows Past Bluff Bodies written by Andreas Neophytou Alexandrou and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
order interpolation scheme for the distribution of the vorticity at the nodal points than the bilinear (area) interpolation used in the original CIC method.
A Numerical Investigation Of Separated Flow Past Bluff Bodies In Channels
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Author : Michael Alan Frederick
language : en
Publisher:
Release Date : 2006
A Numerical Investigation Of Separated Flow Past Bluff Bodies In Channels written by Michael Alan Frederick and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
Direct And Large Eddy Simulation Xi
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Author : Maria Vittoria Salvetti
language : en
Publisher: Springer
Release Date : 2019-02-02
Direct And Large Eddy Simulation Xi written by Maria Vittoria Salvetti and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-02-02 with Technology & Engineering categories.
This book gathers the proceedings of the 11th workshop on Direct and Large Eddy Simulation (DLES), which was held in Pisa, Italy in May 2017. The event focused on modern techniques for simulating turbulent flows based on the partial or full resolution of the instantaneous turbulent flow structures, as Direct Numerical Simulation (DNS), Large-Eddy Simulation (LES) or hybrid models based on a combination of LES and RANS approaches. In light of the growing capacities of modern computers, these approaches have been gaining more and more interest over the years and will undoubtedly be developed and applied further. The workshop offered a unique opportunity to establish a state-of-the-art of DNS, LES and related techniques for the computation and modeling of turbulent and transitional flows and to discuss about recent advances and applications. This volume contains most of the contributed papers, which were submitted and further reviewed for publication. They cover advances in computational techniques, SGS modeling, boundary conditions, post-processing and data analysis, and applications in several fields, namely multiphase and reactive flows, convection and heat transfer, compressible flows, aerodynamics of airfoils and wings, bluff-body and separated flows, internal flows and wall turbulence and other complex flows.
Twenty First Symposium On Naval Hydrodynamics
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 1997-09-11
Twenty First Symposium On Naval Hydrodynamics written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-09-11 with Science categories.
Numerical Simulation Of Vortex Shedding In Oscillatory Flows
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Author : Vikas Krishna
language : en
Publisher:
Release Date : 1995
Numerical Simulation Of Vortex Shedding In Oscillatory Flows written by Vikas Krishna and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Viscous flow categories.
Study Of Flow Past Elliptic And Circular Cylinders Using Direct Numerical Simulation
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Author : Rajat Mittal
language : en
Publisher:
Release Date : 1995
Study Of Flow Past Elliptic And Circular Cylinders Using Direct Numerical Simulation written by Rajat Mittal and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Fluid dynamics categories.
Flow over elliptic cylinders can be considered prototypical of flow over a range of bluff bodies since the geometry allows one to study the effect of both thickness and angle-of-attack on the flow field. Therefore a careful study of this flow should provide valuable insight into the phenomenon of unsteady separation and the structure of bluff body wakes. With this in mind, a spectral collocation technique has been developed to simulate the three-dimensional incompressible flow over elliptic cylinders and unlike spectral element and spectral multi-domain techniques, here the flow is solved in a single domain. The equations are discretized on a body fitted elliptic cylindrical grid and properties of the metric associated with this coordinate system are used to solve the governing equations in an efficient manner. Other key issues including the inflow and outflow boundary conditions and time-discretization are discussed in detail with the hope that this will facilitate future simulations of simdar flows.
Flow Around Bluff Bodies
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Author :
language : en
Publisher:
Release Date : 1984
Flow Around Bluff Bodies written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Aerodynamics categories.
The Steady Separated Flow Past Bluff Objects
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Author : Danford Dale Snowden
language : en
Publisher:
Release Date : 1967
The Steady Separated Flow Past Bluff Objects written by Danford Dale Snowden and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with categories.
Direct Numerical Simulation Of Turbulent Flow Over A Dimpled Flat Plate Using An Immersed Boundary Technique
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Author : Jeremiah J. Gutierrez-Jensen
language : en
Publisher:
Release Date : 2011
Direct Numerical Simulation Of Turbulent Flow Over A Dimpled Flat Plate Using An Immersed Boundary Technique written by Jeremiah J. Gutierrez-Jensen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Computational fluid dynamics categories.
Many methods of passive flow control rely on changes to surface morphology. Roughening surfaces to induce boundary layer transition to turbulence and in turn delay separation is a powerful approach to lowering drag on bluff bodies. While the influence in broad terms of how roughness and other means of passive flow control to delay separation on bluff bodies is known, basic mechanisms are not well understood. Of particular interest for the current work is understanding the role of surface dimpling on boundary layers. A computational approach is employed and the study has two main goals. The first is to understand and advance the numerical methodology utilized for the computations. The second is to shed some light on the details of how surface dimples distort boundary layers and cause transition to turbulence. Simulations are performed of the flow over a simplified configuration: the flow of a boundary layer over a dimpled flat plate. The flow is modeled using an immersed boundary as a representation of the dimpled surface along with direct numerical simulation of the Navier-Stokes equations. The dimple geometry used is fixed and is that of a spherical depression in the flat plate with a depth-to-diameter ratio of 0.1. The dimples are arranged in staggered rows separated by spacing of the center of the bottom of the dimples by one diameter in both the spanwise and streamwise dimensions. The simulations are conducted for both two and three staggered rows of dimples. Flow variables are normalized at the inlet by the dimple depth and the Reynolds number is specified as 4000 (based on freestream velocity and inlet boundary layer thickness). First and second order statistics show the turbulent boundary layers correlate well to channel flow and flow of a zero pressure gradient flat plate boundary layers in the viscous sublayer and the buffer layer, but deviates further away from the wall. The forcing of transition to turbulence by the dimples is unlike the transition caused by a naturally transitioning flow, a small perturbation such as trip tape in experimental flows, or noise in the inlet condition for computational flows.
Numerical Simulation Of The Viscous Flow Around Bluff Bodies Via The Random Vortex Method
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Author : Behzad Ghadiri Dehkordi
language : en
Publisher:
Release Date : 1993
Numerical Simulation Of The Viscous Flow Around Bluff Bodies Via The Random Vortex Method written by Behzad Ghadiri Dehkordi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.
"The flow around multiple stationary cylinders is also simulated. Also, results are presented for the flow around two cylinders, one of which is forced to oscillate in a transverse direction. The numerical results of Strouhal number are in reasonable agreement with experiments." --
