SHEAR LAYER AND WAVE STRUCTURE OVER PARTIALLY SPANNING CAVITIES

2013 ◽  
Vol 20 (1-2) ◽  
pp. 111-123
Author(s):  
Rajarshi Das ◽  
Heuy Dong Kim ◽  
Job Kurian
Keyword(s):  
Shear Layer ◽  
Wave Structure

scholarly journals Shear Layer and Wave Structure Over Partially Spanning Cavities

2013 ◽  
Vol 11 (2) ◽  
pp. 46-54
Author(s):  
Rajarshi Das ◽  
Heuy Dong Kim ◽  
Job Kurian
Keyword(s):  
Shear Layer ◽  
Wave Structure

Supersonic flow over three dimensional cavities

2013 ◽  
Vol 117 (1188) ◽  
pp. 175-192 ◽  
Author(s):  
R. Das ◽  
J. Kurian
Keyword(s):  
Supersonic Flow ◽  
Shear Layer ◽  
Acoustic Waves ◽  
Layer Structure ◽  
Three Dimensional ◽  
Wave Structure ◽  
Acoustic Mode ◽  
Acoustic Energy ◽  
Acoustic Oscillations ◽  
Acoustic Signature

AbstractThis work presents a study of acoustic oscillations generated and the wave structure associated with supersonic flow past wall mounted 3D open cavities of varying length-to-width (L/W) ratio. Experiments were conducted to investigate the acoustic signature generated by the cavities at freestream Mach number of 1·7. The effect ofL/Wratio of the cavity on the dominant modes of the acoustic signature registered on different walls of the cavities is investigated for anL/Wrange of 0·83-4. Shift in the dominant acoustic mode is observed asL/Wratio changes from 3 to 4. Statistical analysis of pressure data showed existence of acoustic waves and spreading of acoustic energy over different modes with change in cavity width. Time averaged schlieren visualisation indicated variation of shock and shear layer structure in the mainstream for the different cavities. Acoustic waves generated by the presence of the cavity and the dynamic behaviour of the shear layer were observed during instantaneous shadowgraph visualisation. Numerical simulation was done to make a prior assessment of the flow structure and the results are in good agreement with those from experiments. Ratio of mass exchange between cavity and mainflow and the cavity volume was observed to have profound effect on the magnitude of pressure oscillations generated by the cavities.

Wave structure of coherent instabilities in a planar supersonic shear layer

1994 ◽  
Author(s):  
Steven Martens ◽  
Kevin Kinzie ◽  
Dennis McLaughlin
Keyword(s):  
Shear Layer ◽  
Wave Structure

STUDY OF THE HEAD ON DETONATION WAVE STRUCTURE IN GASEOUS EXPLOSIVES

1987 ◽  
Vol 48 (C4) ◽  
pp. C4-119-C4-124
Author(s):  
H. N. PRESLES ◽  
P. BAUER ◽  
C. GUERRAUD ◽  
D. DESBORDES
Keyword(s):  
Detonation Wave ◽  
Wave Structure

ABSOLUTE INSTABILITY OF A SUPERCRITICAL SHEAR LAYER

2016 ◽  
Vol 26 (8) ◽  
pp. 815-826 ◽  
Author(s):  
Qing-fei Fu ◽  
Li-Jun Yang ◽  
Chao-Jie Mo
Keyword(s):  
Shear Layer ◽  
Absolute Instability
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