Accession Number : ADA186022

Title :   High Resolution Simulation of Turbulent Flow in a Channel.

Descriptive Note : Interim rept. Mar 86-Mar 87,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Handler, Robert A ; Leighton, R I ; Carroll, D M

PDF Url : ADA186022

Report Date : 25 Sep 1987

Pagination or Media Count : 31

Abstract : A simulation of turbulence in a channel is performed using 128 x 64 x 65 grid points. No turbulence models are incorporated in the calculation. After an initial lower resolution run, the flow is driven by a constant force. At the end of the run, which lasts 54.4 time units, the flow achieves a dynamic equilibrium in the sense that the wall shear stress is balanced almost exactly by the driving force. The global properties of the flow are discussed in detail and some initial results of coherent structures using conditional sampling are presented. Keywords: Turbulence; Conditional sampling; Simulation.

Descriptors :   *TURBULENT FLOW, *CHANNEL FLOW, COHERENCE, DYNAMICS, EQUILIBRIUM(GENERAL), FORCE(MECHANICS), GLOBAL, HIGH RESOLUTION, LOW RESOLUTION, SAMPLING, SHEAR STRESSES, COMPUTERIZED SIMULATION, STRUCTURES, TURBULENCE, WALLS

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE