Effect of Acoustic Excitation on Colliding Laminar Microjets

The results of studies of the jet formation process during the interaction of two colliding axisymmetric laminar air microjets. The axes of symmetry of the tubes lie in the same plane and intersect at an angle of 60°. The distance between the near ends of the tubes is equal to 4 mm. The outflow with identical velocities was implemented. As a result of the experiment, the distinctive features of the secondary jet formation under natural conditions and under the impact of an external periodic disturbance were revealed. It was found that the resulting jet is formed in the plane orthogonal to the tubes. Under natural conditions, a secondary jet with a beam angle greater than 115° is formed and represents a flattened jet. In the case of the external impact by a periodic acoustic signal, after the interaction of the microjets, a slight flattening appears with the development of secondary oscillations in the orthogonal plane and subsequent rotation with respect to the plane of the tubes.