Result: Use of time resolved PIV for validating LES/DNS of the turbulent flow within a PCB enclosure model

Title:
Use of time resolved PIV for validating LES/DNS of the turbulent flow within a PCB enclosure model
Authors:
USERS, G, VERNET, A, FERRE, J. A
Source:
ERCOFTAC International Symposium on Engineering Turbulence Modelling and Measurements -ETMM6Flow, turbulence and combustion. 77(1-4):77-95
Publisher Information:
Heidelberg: Springer, 2006.
Publication Year:
2006
Physical Description:
print, 21 ref
Original Material:
INIST-CNRS
Subject Terms:
Mechanics acoustics, Mécanique et acoustique, Sciences exactes et technologie, Exact sciences and technology, Physique, Physics, Domaines classiques de la physique (y compris les applications), Fundamental areas of phenomenology (including applications), Mécanique des fluides, Fluid dynamics, Méthodes de calcul en mécanique des fluides, Computational methods in fluid dynamics, Ecoulement rotationnel et vorticité, Rotational flow and vorticity, Ecoulements décollés, Separated flows, Appareillage et mesures, Instrumentation for fluid dynamics, Sciences appliquees, Applied sciences, Electronique, Electronics, Electronique des semiconducteurs. Microélectronique. Optoélectronique. Dispositifs à l'état solide, Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices, Circuits intégrés, Integrated circuits, Conception. Technologies. Analyse fonctionnement. Essais, Design. Technologies. Operation analysis. Testing, Analyse donnée, Data analysis, Análisis datos, Carte électronique, Printed circuit board, Tarjeta electronica, Détachement tourbillonnaire, Vortex shedding, Desprendimiento vorticial, Echantillonnage conditionnel, Conditional sampling, Muestreo condicional, Ecoulement tourbillonnaire, Swirling flow, Flujo torbellinal, Ecoulement turbulent, Turbulent flow, Flujo turbulento, Etude expérimentale, Experimental study, Estudio experimental, Installation essai, Test facility, Instalación ensayo, Logique floue, Fuzzy logic, Lógica difusa, Modélisation, Modeling, Modelización, Simulation numérique, Numerical simulation, Simulación numérica, Transfert chaleur, Heat transfer, Transferencia térmica, Vélocimétrie image particule, Particle image velocimetry, conditional sampling, fuzzy clustering, vortex shedding
Document Type:
Conference Conference Paper
File Description:
text
Language:
English
Author Affiliations:
IMFIA, Universidad de la Repùblica, J.H. Reissig 565, 11300 Montevideo, Uruguay
Departament d'Enginyeria Mecànica, Universitat Rovira i Virgili, Av. Paisos Catalans 26, 43007 Tarragona, Spain
ISSN:
1386-6184
Access URL:
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=18312363
Rights:
Copyright 2007 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Notes:
Electronics

Physics: fluid mechanics
Accession Number:
edscal.18312363
Database:
PASCAL Archive

Further Information

In this paper an approach to the validation of transient numerical simulations of turbulent flows through the use of time resolved PIV data is presented and applied to the case of turbulent flow within a simplified model of printed circuit board (PCB) enclosure. The comparison between numerical and experimental data is not limited here to the time averaged fields, but transient flow structures are also addressed. With this purpose a set of conditionally sampled averages, or cluster averages, are obtained through a Fuzzy Clustering technique. Further, the time history of the flow is analyzed on the base of this set of cluster averages, yielding time sequence relations among them that simplify their interpretation in terms of flow dynamics. In this way, events of alternate vortex shedding have been identified in a selected portion of the flow, and showed to exist in both numerical and experimental sets of data.