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EXPERIMENTAL INVESTIGATION ON THE SELF-PRESERVING BEHAVIOUR OF A TURBULENT PLANE JET WITH CO-FLOW

Jean Youssef
Cemagref Université Européenne de Bretagne 17 avenue de Cucillé, F-35044 Rennes, France

Johan Carlier
Irstea, University Europeenne de Bretagne, F-35044 Rennes, France

Joel Delville
Department of Fluid Flow, Heat Transfer and Combustion Institute Pprime - UPR 3346 - CNRS - Universite de Poitiers - ENSMA CEAT - F86036 Poitiers cedex, France

Eva Dorignac
Institut Pprime, Departement Fluides, Thermique et Combustion. Axe COST. ENSMA - Universite de Poitiers - BP 40109. 1, avenue Clement ADER. 86961 Futuroscope CHASSENEUIL cedex

Sinopsis

Air curtains are often used because of their ability to limit transfers between two atmospheres without the use of physical barrier. A typical air curtain is reproduced in a wind tunnel as a submerged plane jet in a uniform co-flow. This flow is explored by crossed Hot-Wire Anemometry for different Reynolds numbers and velocity ratios. The influence of these control parameters on the self-similar behaviours is discussed.