Direct numerical simulation of turbulent mixing layers

1995 ◽  
Author(s):  
Amid Ansari
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Turbulent Mixing ◽  
Mixing Layers

Direct numerical simulation of supercritical oxy-methane mixing layers with CO2 substituted counterparts

2021 ◽  
Vol 33 (3) ◽  
pp. 035115
Author(s):  
Syed Mohammad Ovais ◽  
Konstantin A. Kemenov ◽  
Richard S. Miller
Keyword(s):  
Numerical Simulation ◽  
Direct Numerical Simulation ◽  
Mixing Layers

scholarly journals Stably Stratified Flows: A Model with No Ri(cr)*

2008 ◽  
Vol 65 (7) ◽  
pp. 2437-2447 ◽  
Author(s):  
V. M. Canuto ◽  
Y. Cheng ◽  
A. M. Howard ◽  
I. N. Esau
Keyword(s):  
Numerical Simulation ◽  
Large Eddy Simulation ◽  
Direct Numerical Simulation ◽  
Turbulent Mixing ◽  
Stratified Flows ◽  
The Other ◽  
Large Set ◽  
Eddy Simulation ◽  
Stably Stratified Flows ◽  
Large Eddy

Abstract A large set of laboratory, direct numerical simulation (DNS), and large eddy simulation (LES) data indicates that in stably stratified flows turbulent mixing exists up to Ri ∼ O(100), meaning that there is practically no Ri(cr). On the other hand, traditional local second-order closure (SOC) models entail a critical Ri(cr) ∼ O(1) above which turbulence ceases to exist and are therefore unable to explain the above data. The authors suggest how to modify the recent SOC model of Cheng et al. to reproduce the above data for arbitrary Ri.

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