Modeling and Experimental Investigations of Synthetic Jet in Cross-ow

The ow eld of a round synthetic jet issuing into a cross-ow is investigated. The velocity eld is characterized using cross hot-wire anemometry. The measured velocity eld is used to develop a model for the ow. The model applies conservation laws to a nite control volume in order to identify the invariants of the ow. The jet ow eld is divided into three regions; namely (i) a synthetic region, (ii) a near-eld region, and (iii) a far-eld region. Assuming that the synthetic jet is self-similar far away from the orice, the jet in the cross-ow is modeled with a similarity analysis similar to that of a continuous transverse jet. Preliminary experimental data are provided to show the validity of the proposed analysis and to compare the characteristics of synthetic jets with those of continuous transverse jets and free synthetic jets.