NUMERICAL SIMULATION OF THE TURBULENT RAYLEIGH-BENARD PROBLEM USING SUBGRID MODELING. PDF Download
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Author: THOMAS MASON EIDSON
Publisher:
ISBN:
Category :
Languages : en
Pages : 186
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Book Description
The resulting computer model was used to simulate the flow for Ra from 3.8 x 10('5) to 7.8 x 10('7). The results are compared to laboratory experimental data previously reported in the literature. For Ra
Author: THOMAS MASON EIDSON
Publisher:
ISBN:
Category :
Languages : en
Pages : 186
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Book Description
The resulting computer model was used to simulate the flow for Ra from 3.8 x 10('5) to 7.8 x 10('7). The results are compared to laboratory experimental data previously reported in the literature. For Ra
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722396381
Category :
Languages : en
Pages : 54
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Book Description
A filtering analysis of a turbulent flow was developed which provides details of the path of the kinetic energy of the flow from its creation via thermal production to its dissipation. A low-pass spatial filter is used to split the velocity and the temperature field into a filtered component (composed mainly of scales larger than a specific size, nominally the filter width) and a fluctuation component (scales smaller than a specific size). Variables derived from these fields can fall into one of the above two ranges or be composed of a mixture of scales dominated by scales near the specific size. The filter is used to split the kinetic energy equation into three equations corresponding to the three scale ranges described above. The data from a direct simulation of the Rayleigh-Benard problem for conditions where the flow is turbulent are used to calculate the individual terms in the three kinetic energy equations. This is done for a range of filter widths. These results are used to study the spatial location and the scale range of the thermal energy production, the cascading of kinetic energy, the diffusion of kinetic energy, and the energy dissipation. These results are used to evaluate two subgrid models typically used in large-eddy simulations of turbulence. Subgrid models attempt to model the energy below the filter width that is removed by a low-pass filter. Eidson, T. M. and Hussaini, M. Y. and Zang, T. A. Unspecified Center...
Author: T. M. Eidson
Publisher:
ISBN:
Category :
Languages : en
Pages : 56
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Book Description
Author: Institute for Computer Applications in Science and Engineering
Publisher:
ISBN:
Category :
Languages : en
Pages : 48
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Book Description
Author: Daniel Chung
Publisher:
ISBN:
Category : Turbulence
Languages : en
Pages : 196
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 704
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Book Description
Author: Wei Xu
Publisher:
ISBN:
Category :
Languages : en
Pages : 104
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Book Description
Author: Robert Arthur Clark
Publisher:
ISBN:
Category : Eddy flux
Languages : en
Pages : 134
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Book Description
Author: Sean C. Garrick
Publisher: Springer
ISBN: 3319595849
Category : Science
Languages : en
Pages : 71
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Book Description
This Brief focuses on the dispersion of high-porosity particles, their entrainment into the vapor-laden stream, and the condensation of vapor onto the particles. The authors begin with a simple/static problem, focusing on transport within the particle. They go on to consider the high-resolution simulation of particles in a turbulent flow and the time-dependent evolution of the fluid-particle fields. Finally, they examine the more computationally-affordable large-eddy simulation of gas-to-particle mass-transfer. The book ends with a summary and challenges as well as directions for the area.
Author: Andreas Dillmann
Publisher: Springer Science & Business Media
ISBN: 3642142435
Category : Technology & Engineering
Languages : en
Pages : 629
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Book Description
th This volume contains the papers presented at the 16 DGLR/STAB-Symposium held at the Eurogress Aachen and organized by RWTH Aachen University, Germany, November, 3 - 4, 2008. STAB is the German Aerospace Aerodynamics Association, founded towards the end of the 1970's, whereas DGLR is the German Society for Aeronautics and Astronautics (Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal Oberth e.V.). The mission of STAB is to foster development and acceptance of the discipline “Aerodynamics” in Germany. One of its general guidelines is to concentrate resources and know-how in the involved institutions and to avoid duplication in research work as much as possible. Nowadays, this is more necessary than ever. The experience made in the past makes it easier now, to obtain new knowledge for solving today's and tomorrow's problems. STAB unites German scientists and engineers from universities, research-establishments and industry doing research and project work in numerical and experimental fluid mechanics and aerodynamics for aerospace and other applications. This has always been the basis of numerous common research activities sponsored by different funding agencies. Since 1986 the symposium has taken place at different locations in Germany every two years. In between STAB workshops regularly take place at the DLR in Göttingen.
