Direct and Large Eddy Simulation of Turbulence : Proceedings of the EUROMECH Colloquium No. 199, München, FRG, September 30 to October 2, 1985

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Direct and Large Eddy Simulation of Turbulence : Proceedings of the EUROMECH Colloquium No. 199, München, FRG, September 30 to October 2, 1985
Format:
Bog, hæftet
Udgivelsesdato:
01-01-1986
Sprog:
Engelsk
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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.

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ISBN13:
9783663000488
Vægt:
562 g
Dybde:
19 mm
Bredde:
170 mm
Højde:
244 mm
Format:
Hæftet

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Direct and Large Eddy Simulation of Turbulence : Proceedings of the EUROMECH Colloquium No. 199, München, FRG, September 30 to October 2, 1985

af

indgår i serie NOTES ON NUMERICAL FLUID MECHANICS

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