In-cylinder charge motion plays a key role in optimizing the combustion process of modern reciprocating engines. The present paper describes a method for obtaining the volumetric, isothermal, in-cylinder velocity flow field using Doppler Global Velocimetry (DGV). The DGV system is designed for measuring time-averaged velocity data in three different light sheet directions using a single camera system with the aim of providing planar, spatially resolved, three-component velocity data of the cylindrical cross section. As DGV provides time-averaged data, the results can be directly compared with data obtained by 3-D CFD analysis. An automated program code generates characteristic numbers of the measured velocity fields with the aim of assessing and comparing the results of different engine concepts.
Measurement of 3-D In-Cylinder Flow Fields Using Doppler Global Velocimetry
Sae Technical Papers
SAE 2004 World Congress & Exhibition ; 2004
08.03.2004
Aufsatz (Konferenz)
Englisch
Measurement of 3D in-cylinder flow fields using Doppler Global Velocimetry
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