The characteristics and evolution of large‐scale structures in compressible mixing layers

1995 ◽  
Vol 7 (4) ◽  
pp. 864-876 ◽  
Author(s):  
Gregory S. Elliott ◽  
Mo Samimy ◽  
Stephen A. Arnette
Keyword(s):  
Large Scale ◽  
Mixing Layers ◽  
Large Scale Structures ◽  
Scale Structures

Large Scale Structures in Reacting Mixing Layers

1991 ◽  
pp. 331-343 ◽  
Author(s):  
C. Lee ◽  
R. W. Metcalfe ◽  
F. Hussain
Keyword(s):  
Large Scale ◽  
Mixing Layers ◽  
Large Scale Structures ◽  
Scale Structures

scholarly journals Control of Large-Scale Structures in Spatially Developing Mixing Layers.

1995 ◽  
Vol 61 (589) ◽  
pp. 3243-3250
Author(s):  
Toshio Miyauchi ◽  
Mamoru Tanahashi ◽  
Shinobu Tokuda ◽  
Motohiro Suzuki
Keyword(s):  
Large Scale ◽  
Mixing Layers ◽  
Large Scale Structures ◽  
Scale Structures

Effects of heat release on the large-scale structure in turbulent mixing layers

1989 ◽  
Vol 199 ◽  
pp. 297-332 ◽  
Author(s):  
P. A. Mcmurtry ◽  
J. J. Riley ◽  
R. W. Metcalfe
Keyword(s):  
Heat Release ◽  
Turbulent Mixing ◽  
Large Scale ◽  
Mixing Layer ◽  
Large Scale Structure ◽  
Scale Structure ◽  
Mixing Layers ◽  
Turbulent Mixing Layer ◽  
Large Scale Structures ◽  
Scale Structures

The effects of chemical heat release on the large-scale structure in a chemically reacting, turbulent mixing layer are investigated using direct numerical simulations. Three-dimensional, time-dependent simulations are performed for a binary, single-step chemical reaction occurring across a temporally developing turbulent mixing layer. It is found that moderate heat release slows the development of the large-scale structures and shifts their wavelengths to larger scales. The resulting entrainment of reactants is reduced, decreasing the overall chemical product formation rate. The simulation results are interpreted in terms of turbulence energetics, vorticity dynamics, and stability theory. The baroclinic torque and thermal expansion in the mixing layer produce changes in the flame vortex structure that result in more diffuse vortices than in the constant-density case, resulting in lower rotation rates of the large-scale structures. Previously unexplained anomalies observed in the mean velocity profiles of reacting jets and mixing layers are shown to result from vorticity generation by baroclinic torques.

Sign in / Sign up

Export Citation Format

Share Document