NDLI: LES-PIV Comparison for Air Flow in a Simplified Cowl-Box

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Berger, Re´mi Depardon, Se´bastien Rambaud, Patrick Buchlin, Jean-Marie
Copyright Year	2008
Abstract	A single-phase Large Eddy Simulation is performed in a simplified cowl-box model and compared to PIV data. Indeed, prior to the analysis of the interaction between a turbulent air flow and an interface of liquid, the most accurate description of the 3D flow field is required. Although the qualitative phenomena are correctly rendered (flapping motion of impinging inlet jets), quantitative differences are noticed, mainly due to non satisfactory turbulent boundary condition, which induces an overestimation of the jets core length, and modifies its interaction with the cowl box walls. Nevertheless, a qualitative analysis of the instantaneous flow shows the generation of large coherent vortical structures due to the oscillation of the impinging jets at the bottom wall. The advection of these structures in the cowl-box generates large oscillations of wall shear stress and pressure distribution, which are thought to be of great importance for further two-phase flow simulations.
Starting Page	241
Ending Page	247
Page Count	7
File Format	PDF
ISBN	9780791848715
DOI	10.1115/IMECE2008-68359
e-ISBN	9780791838402
Volume Number	Volume 10: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B, and C
Conference Proceedings	ASME 2008 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2008-10-31
Publisher Place	Boston, Massachusetts, USA
Access Restriction	Subscribed
Subject Keyword	Air flow Turbulence Large eddy simulation Simulation Two-phase flow Oscillations Shear stress Jets Boundary-value problems Engineering simulation Flow (dynamics) Pressure
Content Type	Text
Resource Type	Article

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