Direct and Large-Eddy Simulation I

Direct and Large-Eddy Simulation I PDF Author: Peter R. Voke
Publisher: Springer Science & Business Media
ISBN: 940111000X
Category : Technology & Engineering
Languages : en
Pages : 438

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Book Description
It is a truism that turbulence is an unsolved problem, whether in scientific, engin eering or geophysical terms. It is strange that this remains largely the case even though we now know how to solve directly, with the help of sufficiently large and powerful computers, accurate approximations to the equations that govern tur bulent flows. The problem lies not with our numerical approximations but with the size of the computational task and the complexity of the solutions we gen erate, which match the complexity of real turbulence precisely in so far as the computations mimic the real flows. The fact that we can now solve some turbu lence in this limited sense is nevertheless an enormous step towards the goal of full understanding. Direct and large-eddy simulations are these numerical solutions of turbulence. They reproduce with remarkable fidelity the statistical, structural and dynamical properties of physical turbulent and transitional flows, though since the simula tions are necessarily time-dependent and three-dimensional they demand the most advanced computer resources at our disposal. The numerical techniques vary from accurate spectral methods and high-order finite differences to simple finite-volume algorithms derived on the principle of embedding fundamental conservation prop erties in the numerical operations. Genuine direct simulations resolve all the fluid motions fully, and require the highest practical accuracy in their numerical and temporal discretisation. Such simulations have the virtue of great fidelity when carried out carefully, and repre sent a most powerful tool for investigating the processes of transition to turbulence.

Direct and Large-Eddy Simulation I

Direct and Large-Eddy Simulation I PDF Author: Peter R. Voke
Publisher: Springer Science & Business Media
ISBN: 940111000X
Category : Technology & Engineering
Languages : en
Pages : 438

Get Book Here

Book Description
It is a truism that turbulence is an unsolved problem, whether in scientific, engin eering or geophysical terms. It is strange that this remains largely the case even though we now know how to solve directly, with the help of sufficiently large and powerful computers, accurate approximations to the equations that govern tur bulent flows. The problem lies not with our numerical approximations but with the size of the computational task and the complexity of the solutions we gen erate, which match the complexity of real turbulence precisely in so far as the computations mimic the real flows. The fact that we can now solve some turbu lence in this limited sense is nevertheless an enormous step towards the goal of full understanding. Direct and large-eddy simulations are these numerical solutions of turbulence. They reproduce with remarkable fidelity the statistical, structural and dynamical properties of physical turbulent and transitional flows, though since the simula tions are necessarily time-dependent and three-dimensional they demand the most advanced computer resources at our disposal. The numerical techniques vary from accurate spectral methods and high-order finite differences to simple finite-volume algorithms derived on the principle of embedding fundamental conservation prop erties in the numerical operations. Genuine direct simulations resolve all the fluid motions fully, and require the highest practical accuracy in their numerical and temporal discretisation. Such simulations have the virtue of great fidelity when carried out carefully, and repre sent a most powerful tool for investigating the processes of transition to turbulence.

Stably Stratified Flow and Dense Gas Dispersion

Stably Stratified Flow and Dense Gas Dispersion PDF Author: J. S. Puttock
Publisher: Oxford University Press, USA
ISBN:
Category : Science
Languages : en
Pages : 456

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Book Description
Very Good,No Highlights or Markup,all pages are intact.

Air Pollution Modeling and Its Application III

Air Pollution Modeling and Its Application III PDF Author: C. De Wispelaere
Publisher: Springer Science & Business Media
ISBN: 1461326915
Category : Science
Languages : en
Pages : 712

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Book Description
In 1969 the North Atlantic Treaty Organization established the Committee on the Challenges of Modern Society. Air Pollution was from the start one of the pri9rity problems under study within the framework of the pilot studies undertaken by this Committee. The organization of a yearly symposium dealing with air pollution modeling and its application is one of the main activities within the pilot study in relation to air pollution. After being organized for five years by the United States and for five years by the Federal Republic of Germany, Belgium, represented by the Prime Minister's Office for Science Policy Programming, became responsible in 1980 for the organization of this symposium. This volume contains the papers presented at the 13th Inter national Technical Meeting on Air Pollution Modeling and its Appli cation held at lIe des Embiez, France, from 14th to 17th September 1982. This meeting was jointly organized by the Prime Minister's Office for Science Policy Programming, Belgium, and the Ministere de l'Environnement, France. The conference was attended by 120 participants and 45 papers have been presented. The closing ses sion of the 13th I. T. M. has been attended by Mr. Alain Bombard, French Minister of the Environment. The members of the selection committee of the 13th I. T. M. were A. Berger (Chairman, Belgium), W. K1ug (Federal Republic of Germany), K. Demerjian (United States of America), L. Santomauro (Italy), M. L. Williams (United Kingdom), H. Van Dop (The Netherlands), H. E. Turner (Canada), C.

Recent Advances In Computational Science And Engineering - Proceedings Of The International Conference On Scientific And Engineering Computation (Ic-sec) 2002

Recent Advances In Computational Science And Engineering - Proceedings Of The International Conference On Scientific And Engineering Computation (Ic-sec) 2002 PDF Author: Justin Kwok
Publisher: World Scientific
ISBN: 1783261064
Category : Computers
Languages : en
Pages : 952

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Book Description
IC-SEC 2002 serves as a forum for engineers and scientists who are involved in the use of high performance computers, advanced numerical strategies, computational methods and simulation in various scientific and engineering disciplines. The conference creates a platform for presenting and discussing the latest trends and findings about the state of the art in their particular field(s) of interest. IC-SEC also provides a forum for the interdisciplinary blending of computational efforts in various diversified areas of science, such as biology, chemistry, physics and materials science, as well as all branches of engineering. The proceedings cover a broad range of topics and an application area which involves modelling and simulation work using high performance computers.

Environmental Stratified Flows

Environmental Stratified Flows PDF Author: Roger Grimshaw
Publisher: Springer Science & Business Media
ISBN: 0306480247
Category : Science
Languages : en
Pages : 286

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Book Description
The dynamics of flows in density-stratified fluids has been and remains now an important topic for scientific enquiry. Such flows arise in many contexts, ranging from industrial settings to the oceanic and atmospheric environments. It is the latter topic which is the focus of this book. Both the ocean and atmosphere are characterised by the basic vertical density stratification, and this feature can affect the dynamics on all scales ranging from the micro-scale to the planetary scale. The aim of this book is to provide a “state-of-the-art” account of stratified flows as they are relevant to the ocean and atmosphere with a primary focus on meso-scale phenomena; that is, on phenomena whose time and space scales are such that the density stratification is a dominant effect, so that frictional and diffusive effects on the one hand and the effects of the earth’s rotation on the other hand can be regarded as of less importance. This in turn leads to an emphasis on internal waves.

Numerical Methods in Laminar and Turbulent Flow

Numerical Methods in Laminar and Turbulent Flow PDF Author:
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 1180

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Book Description


Fluid- and Gasdynamics

Fluid- and Gasdynamics PDF Author: G.H. Schnerr
Publisher: Springer Science & Business Media
ISBN: 3709193109
Category : Science
Languages : en
Pages : 398

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Book Description
This volume offers a wide range of theoretical, numerical and experimental research papers on fluid dynamics. The major fields of research - fundamentals of fluid mechanics as well as their applications - are treated: - stability phenomena: convective flow, thermal and hydrodynamic systems - transition, turbulence and separation: boundary-layer, turbulent combustion, rarefied gasdynamics, near wall and off wall flow fields, energy dissipation - transonic flow: homogeneous condensation, shock-waves, effects at Mach number unity - hypersonic flow: flow over spheres, aerothermodynamics, relaxation - fluid machinery: axial fans, compressor cascades, fluid couplings - computational fluid dynamics: passive shock control, zonal computation, cylinderflow, flow over wings - miscellaneous problems.

Radar in Meteorology

Radar in Meteorology PDF Author: David Atlas
Publisher: Springer
ISBN: 193570415X
Category : Science
Languages : en
Pages : 817

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Book Description
This fully illustrated volume covers the history of radar meteorology, deals with the issues in the field from both the operational and the scientific viewpoint, and looks ahead to future issues and how they will affect the current atmosphere. With over 200 contributors, the volume is a product of the entire community and represents an unprecedented compendium of knowledge in the field.

Applied mechanics reviews

Applied mechanics reviews PDF Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 400

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Book Description


Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 426

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Book Description