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Transient Behavior of Compressed Non-Homogeneous Flow Application to Engine Development
Published May 14, 1992 by Societe des Ingenieurs de l'Automobile in France
We present a fundamental research work closely linked with the optimization of the internal combustion engine compression phase. The different flows inside the cylinder during the compression phase are analyzed. We show that there is a strong need of basic physical understanding of such flows.
We investigate experimentally at I.M.F.T. the behavior of a free axisymmetrical air jet undergoing rapid compression. The experimental set-up is presented. The non-stationary kinematic behavior of the jet is studied by laser doppler velocimetry and a first interpretation of the physical mechanisms governing the out of equilibrium evolution is presented.