NA Schumann; Ulrich Schumann; Rainer Friedrich Direct and Large Eddy Simulation of Turbulence 9783663000488

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Автор: NA Schumann; Ulrich Schumann; Rainer Friedrich
Название: Direct and Large Eddy Simulation of Turbulence
ISBN: 9783663000488
Издательство: Springer
Классификация:

Инженерное дело: Общие вопросы

ISBN-10: 3663000486
Обложка/Формат: Paperback
Страницы: 340
Вес: 0.56 кг.
Дата издания: 01.01.1986
Серия: Notes on Numerical Fluid Mechanics
Язык: English
Размер: 244 x 170 x 19
Основная тема: Engineering
Подзаголовок: Proceedings of the EUROMECH Colloquium No. 199, M?nchen, FRG, September 30 to October 2, 1985
Ссылка на Издательство: Link
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Поставляется из: Германии
Описание: This volume contains papers presented to a EUROMECH-Colloquium held in Munich, September 30 to October 2, 1985. The Colloquium is number 199 in a series of colloquia inaugurated by the European Mechanics Committee. The meeting was jointly organized by the Lehrstuhl fur Stromungsmechanik at the Technische Universitat Munchen and the Institut fur Physik der Atmosphare of the Deutsche Forschungs- und Versuchsanstalt fur Luft- und Raumfahrt (DFVLR) in Oberpfaffenhofen. Direct and large eddy simulation are terms which denote two closely con- nected methods of turbulence research. In a direct simulation (DS), turbu- lent motion is simulated by numerically integrating the Navier-Stokes equations in three-dimensional space and as a function of time. Besides ini- tial and boundary conditions no physical simplifications are involved. Com- puter resources limit the resolution in time and space, though simulations with an order of one million discrete points in space are feasible. The simu- lated flow fields can be considered as true realizations of turbulent flow fields and analysed to answer questions on the basic behaviour of turbulence. Direct simulations are valid as long as all the excited scales remain within the band of resolved scales. This means that viscosity must be strong enough to damp out the not resolved scales or the simulation is restricted to a lim- ited integration-time interval only. In summary, DS provides a tool to investigate turbulent motions from first principles at least for a finite band of scales.

Direct and Large Eddy Simulation of Turbulence, NA Schumann; Ulrich Schumann; Rainer Friedrich