BibTex format
@inproceedings{Kankanwadi:2019,
author = {Kankanwadi, K and Buxton, O},
title = {Turbulent entrainment from a turbulent background},
url = {http://hdl.handle.net/10044/1/73561},
year = {2019}
}
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Citation
RIS format (EndNote, RefMan)
TY - CPAPER
AB - Simultaneous particle image velocimetry (PIV) andplanar laser induced fluorescence (PLIF) measurementswere conducted in order to investigate the effects of back-ground turbulence on the entrainment process as well ason the behaviour of the wake interface. Previous studieshave highlighted the importance of length scale as well asturbulence intensity in the background flow. This paperreports on a parametric study examining entrainment intothe wake of a circular cylinder by independently varyingbackground turbulence parameters through the use of tur-bulence generating grids. Despite the availability of tur-bulent rotational fluid on both sides of the interface, theclassical turbulent/non-turbulent interface result of an en-strophy jump is reproduced, even in the harshest incomingfree-stream turbulence conditions. Examining the tortuos-ity, reveals that both length scale and turbulence intensityin the background turbulence act to increase the interfacesurface area. Furthermore, the entrainment process is foundto be greatly sensitive to the turbulence intensity of the sub-jected free-stream turbulence. However, despite an increasein surface area, a net reduction in mean entrainment massflux is observed with increased intensity in the backgroundturbulence. Examining the mass flux PDFs, reveals that thisbehaviour is a result of substantial, yet infrequent detrain-ment events.
AU - Kankanwadi,K
AU - Buxton,O
PY - 2019///
TI - Turbulent entrainment from a turbulent background
UR - http://hdl.handle.net/10044/1/73561
ER -