Investigation of numerical viscosities and dissipation rates of second-order TVD-MUSCL schemes for implicit large-eddy simulation

2015 ◽  
Vol 281 ◽  
pp. 1003-1031 ◽  
Author(s):  
Shreyas Bidadi ◽  
Sarma L. Rani
Keyword(s):  
Large Eddy Simulation ◽  
Second Order ◽  
Eddy Simulation ◽  
Dissipation Rates ◽  
Large Eddy ◽  
Implicit Large Eddy Simulation

Large-Eddy Simulation of Shock-Wave-Induced Turbulent Mixing

2007 ◽  
Vol 129 (12) ◽  
pp. 1504-1513 ◽  
Author(s):  
Ben Thornber ◽  
Dimitris Drikakis
Keyword(s):  
Large Eddy Simulation ◽  
Turbulent Mixing ◽  
Second Order ◽  
Computational Time ◽  
Eddy Simulation ◽  
Mixing Parameters ◽  
Large Eddy ◽  
Wave Induced ◽  
Fifth Order ◽  
Implicit Large Eddy Simulation

The paper presents implicit large-eddy simulation (ILES) simulation of a shock tube experiment involving compressible turbulent mixing. A new characteristic-based approximate Riemann solver is derived, and employed in a second-order and fifth-order finite volume Godunov-type ILES framework. The methods are validated against (qualitative) experimental data and then compared and contrasted in terms of resolved turbulent kinetic energy and mixing parameters as a function of grid resolution. It is concluded that both schemes represent the experiment with good accuracy. However, the fifth-order results are approximately equivalent to results gained on double the grid size at second order, whereas the fifth-order method requires only approximately 20% extra computational time.

Wall-Modelled Implicit Large-Eddy Simulation of the RA16SC1 Highlift Configuration

2013 ◽  
Author(s):  
Michael Meyer ◽  
Stefan Hickel ◽  
Christian Breitsamter ◽  
Nikolaus Adams
Keyword(s):  
Large Eddy Simulation ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Implicit Large Eddy Simulation

scholarly journals Implicit large eddy simulation of shock-driven material mixing

2013 ◽  
Vol 371 (2003) ◽  
pp. 20120217 ◽  
Author(s):  
F. F. Grinstein ◽  
A. A. Gowardhan ◽  
J. R. Ristorcelli
Keyword(s):  
Large Eddy Simulation ◽  
Turbulent Mixing ◽  
Initial Conditions ◽  
Spatial Scales ◽  
Late Time ◽  
Eddy Simulation ◽  
Geometrical Complexity ◽  
Planar Shock ◽  
Large Eddy ◽  
Implicit Large Eddy Simulation

Under-resolved computer simulations are typically unavoidable in practical turbulent flow applications exhibiting extreme geometrical complexity and a broad range of length and time scales. An important unsettled issue is whether filtered-out and subgrid spatial scales can significantly alter the evolution of resolved larger scales of motion and practical flow integral measures. Predictability issues in implicit large eddy simulation of under-resolved mixing of material scalars driven by under-resolved velocity fields and initial conditions are discussed in the context of shock-driven turbulent mixing. The particular focus is on effects of resolved spectral content and interfacial morphology of initial conditions on transitional and late-time turbulent mixing in the fundamental planar shock-tube configuration.

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