Abstract:
European Norms for ventilation contain turbulence intensity requirements
in rooms. One of the determining factors is turbulence intensity in
ventilation jets. We found an approach for geometric analysis of turbulent
macrostructure for subsonic flows with large-scale vorticity i.e. ventilation
jets and boundary layers between flows. This approach requires building
of simplified turbulent macrostructure chart and performing geometrical
analysis of it. In previous works, using the approach we analytically found
averaged characteristic of free jets, jets in flows and jets laid on different
shape surfaces without requirements of any experimental data. The results
of geometrical analysis of heat transfer between flows are used in
Ukrainian norms. In this work we found turbulence intensity of wall jets on
flat surfaces such as room walls or ceiling without any experimental
values. The results coincide with known experimental data and may be
used in flow calculation in rooms.
