Use of Time Resolved PIV for Validating LES/DNS of the Turbulent Flow within a PCB Enclosure Model (original) (raw)

Flow Turbulence and Combustion, 2006

Abstract

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.

Gabriel Usera hasn't uploaded this paper.

Let Gabriel know you want this paper to be uploaded.

Ask for this paper to be uploaded.