Features of the dynamics of several elevated jets in a cross-flow

Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia

^* Corresponding author: dobroselsky@mail.ru

Abstract

Using the thermoanemometric method, the effect of turbulent cross-flow on vertical low-speed elevated axisymmetric jets with a relative velocity of approximately 2.45 has been experimentally investigated. Processing and qualitative analysis of experimental data on velocity profiles for the case of two and four identical isothermal turbulent jets propagating in a uniform cross-flow are carried out. The analysis of velocity contours in different cross-sections showed that the interaction of the jets proceeds in a complex way; and in this interaction, in addition to the jets and the cross flow, the trace under the jets and tubes – the sources of the jets – are involved. It is obtained that the trajectory of a twin parallel jet shows less penetration than that of a single jet. At the same time, the trajectory of the tandem jet after the merging of the rows shows significant penetration into the transverse flow compared to the single one.