# Engineering Mechanics

Proceedings Vol. 32 (2026)

ENGINEERING MECHANICS 2026

Copyright © 2026 Institute of Thermomechanics of the Czech Academy of Sciences, Prague

 

Duda D., Yanovych V., Tomášková T., Janský V., Uruba V.
pages 37 - 40, full text

The swirler grids offer an interesting profile of turbulence decay. First, they create a lattice of aligned vortices, which behave similarly as the Two-dimensional energy condensate (vortices are parallel as in thin layer flows). Thus turbulent kinetic energy (TKE) grows downstream. Later, due to mutual interaction, the meandering grows until it destroys the vortex alignment. Once the vortices are no more parallel, their interaction switch to classical 3D direct energy cascade and the turbulence decays similarly as past a regular grid. In this contribution, we show the downstream profile of TKE measured for several swirler grids.

Ownership of copyright in original research articles remains with the Authors, and provided that, when reproducing parts of the contribution, the Authors acknowledge and/or reference the Proceedings, the Authors do not need to seek permission for re-use of their material.

All papers were reviewed by members of the scientific committee.