Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 1504-1513 |
| Number of pages | 10 |
| Journal | Journal of Fluids Engineering |
| Volume | 129 |
| Issue number | 12 |
| Early online date | 29 Jun 2007 |
| DOIs | |
| Publication status | Published - 1 Dec 2007 |
Keywords
- computer simulation
- finite volume method
- parameter estimation
- shock tubes
- turbulent flow
- grid resolution
- implicit large eddy simulation
- mixing parameters
- turbulent mixing
- large eddy simulation