An experimental study on the near flow field characteristics of non-circular jets
1 ITU Graduate School of Science Engineering and Technology, Maslak, 34469 Istanbul, Turkey
2 ITU Faculty of Aeronautics and Astronautics, Aeronautical Engineering Department, Maslak, 34469 Istanbul, Turkey
Subsonic turbulent free jet, issuing from a lobed contoured nozzle in to quiescent air is investigated experimentally. Results are compared with a cir ular jet from a nozzle of the same exit area and same contraction profile. Mean flow characteristics, turbulence intensities and Reynolds shear stresses in the near field region are investigated by using Hot-wire Anemometry. An overall decrease in turbulence intensities and enhanced flow entrainment in the near field of lobed nozzle are observed.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.