Non-Reacting Channel Flow
Non-Reacting Channel Flow DNS
Description
These snapshots are from a Direct Numerical Simulation (DNS) of incompressible turbulent channel flow at friction Reynolds number \(Re_\tau = 544\) and bulk Reynolds number \(Re_b = 10,000\) [1]. The computational domain has dimensions \(L_x = 8\pi\) and \(L_z = 3\pi\) in the streamwise and spanwise directions respectively, with periodic boundary conditions applied in both directions. The channel width is set to \(L_y = 2\). No-slip/no-penetration boundary conditions are enforced at the walls. The flow is driven by a uniform pressure gradient that varies in time to maintain constant mass flux through the channel. The numerical methods employ a Fourier-Galerkin approach in the streamwise and spanwise directions. The wall-normal direction is represented using a B-spline collocation method. Time advancement employs a low-storage implicit-explicit scheme based on third-order Runge-Kutta for nonlinear terms and Crank-Nicolson for viscous terms. Each snapshot captures the complete three-dimensional flow field including all three velocity components (u, v, w) at a given time.
Quick Info
Links to different cases
| ID | Re$_{\tau}$ | Description | Size (TB) | Links |
|---|---|---|---|---|
| 0 | 544 | One Flow Through Time | 3.4 |
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| 1 | 544 | Collection of snapshots at different time | 3.4 |
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References
[1] Lee, M., & Moser, R. D. (2015). Direct numerical simulation of turbulent channel flow up to Reτ ≈ 5200. Journal of Fluid Mechanics, 774, 395-415.