Title: Swirl characterisation in steady and unsteady flows with PIV measurements

Authors: C. Chaillou, R. Roy, Ph. Druault, Ph. Guibert, O. Pajot

Addresses: Laboratoire de Mecanique Physique CNRS UMR 7068, Universite Pierre et Marie Curie, 2 place de la gare de ceinture, 78210 Saint-Cyr l'Ecole, France. ' Laboratoire de Mecanique Physique CNRS UMR 7068, Universite Pierre et Marie Curie, 2 place de la gare de ceinture, 78210 Saint-Cyr l'Ecole, France. ' Laboratoire de Mecanique Physique CNRS UMR 7068, Universite Pierre et Marie Curie, 2 place de la gare de ceinture, 78210 Saint-Cyr l'Ecole, France. ' Laboratoire de Mecanique Physique CNRS UMR 7068, Universite Pierre et Marie Curie, 2 place de la gare de ceinture, 78210 Saint-Cyr l'Ecole, France. ' PSA Peugeot Citroen DRIA/SARA, Centre technique de Velizy, Route de Gisy, 78943 Velizy-Villacoublay Cedex, France

Abstract: A detailed aerodynamic analysis of the swirl characteristics of an in-cylinder flow generated by a cylinder head engine is presented and that can be easily extended to the case of real in-cylinder engine flow. The article contributes to the reflection related to the pertinence to keep the characterisation of the swirl generation from the cylinder head in steady rigs.

Keywords: intake ports; integral length scales; internal combustion engine; aerodynamics; engine flow; swirl flow; swirl characteristics; particle image velocimetry; PIV; cylinder head testing.

DOI: 10.1504/IJVD.2005.008469

International Journal of Vehicle Design, 2005 Vol.39 No.4, pp.383 - 402

Published online: 21 Dec 2005 *

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