Compressible turbulent channel flows

Turbulence statistics

Flow Fields

Description:  Snapshots generated from a Direct Numerical Simulation (DNS) of compressible turbulent channel flow at bulk Reynolds number Reb=7667 and bulk Mach numbers Mb=0.8,1.5 and 3.0. The computational domain has dimensions Lx*Lz=6pi h *2pi h in the streamwise and spanwise directions respectively, with h the half-channel height. Periodic boundary conditions applied in streamwise and spanwise directions, while no-slip/no-penetration and isothermal 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.  Each snapshot captures the complete five-dimensional flow field including all three velocity components (u, v, w)  and temperature (T) and density (rho) at a given time. 

Links to different cases:

• Reb=7667, Mb=0.8

• Reb=7667, Mb=1.5

• Reb=7667, Mb=3.0

References:

1. Li Q, Chen Y, Xiao D, Mao X, Yao J. Characterization of the quiescent momentum and thermal cores in compressible turbulent channel flows[J]. Physical Review Fluids, 2025, 10(6): 064612.

2. Yao J., Hussain F., Turbulence statistics and coherent structures in compressible channel flow[J]. Physical Review Fluids 5(8), 084603, (2020)