Flow control with noncircular jets

EJ Gutmark, FF Grinstein - Annual review of fluid mechanics, 1999 - annualreviews.org
▪ Abstract Noncircular jets have been the topic of extensive research in the last fifteen years.
These jets were identified as an efficient technique of passive flow control that allows …

Evolution from 'tabs' to 'chevron technology'-a review

K Zaman, JE Bridges, DL Huff - International Journal of …, 2011 - journals.sagepub.com
'Chevrons', a sawtooth pattern on the trailing edge of exhaust nozzles, are being
implemented on modern jet engines. The technology reduces jet noise for 'separate …

Heat transfer and acoustic study of impinging synthetic jet using diamond and oval shape orifice

LD Mangate, MB Chaudhari - International Journal of Thermal Sciences, 2015 - Elsevier
Synthetic jet is a novel flow phenomenon potentially useful for cooling of electronic devices.
The heat transfer and acoustic characteristics of impinging synthetic jet are investigated …

Near-field investigation of chevron nozzle mechanisms

B Callender, E Gutmark, S Martens - AIAA journal, 2008 - arc.aiaa.org
CHEVRON nozzles represent the current state of the art in jet noise reduction technology for
application in medium to high bypass ratio turbofan engines. These nozzles feature …

Survey on vortex shedding tabs as supersonic jet control

T Thangaraj, M Kaushik, D Deb, M Unguresan… - Frontiers in …, 2022 - frontiersin.org
This study provides an overview of the tab-controlled jets to understand and predict the
influence of mixing promoting vortices at speeds ranging from subsonic to supersonic. A …

Experimental studies on the limiting tab

E Rathakrishnan - AIAA Journal, 2009 - arc.aiaa.org
DESIGN of large and fast jet-propelled aircraft and large booster rocket engines have
focused on noise problems. Difficulties in devising satisfactory solutions stem from the …

Pinch-off of non-axisymmetric vortex rings

C O'Farrell, JO Dabiri - Journal of fluid mechanics, 2014 - cambridge.org
The formation and pinch-off of non-axisymmetric vortex rings is considered experimentally.
Vortex rings are generated using a non-circular piston–cylinder arrangement, and the …

Instability of rectangular jets

CKW Tam, AT Thies - Journal of Fluid Mechanics, 1993 - cambridge.org
The instability of rectangular jets is investigated using a vortex-sheet model. It is shown that
such jets support four linearly independent families of instability waves. Within each family …

Investigation of the noise from a rectangular supersonic jet

NS Heeb, P Mora Sanchez, EJ Gutmark… - 19th AIAA/CEAS …, 2013 - arc.aiaa.org
An experimental investigation of a low aspect ratio rectangular nozzle's flow field was
completed. Over, ideally, and under expanded operating conditions were presented for …

Supersonic jet mixing enhancement by'delta-tabs'

B Zaman, M Reeder, M Samimy - 28th Joint Propulsion Conference …, 1992 - arc.aiaa.org
The results of a continuing investigation on the effect of vortex generators, in the form of
small tabs at the nozzle exit, on the evolution of a jet are reported in this paper. Primarily …