抄録
A regular pattern of turbulent and quasi-laminar fluid motions is known to appear in a plane Poiseuille flow at very low Reynolds numbers for which turbulence can be sustained. We focused on this transitional structure, so-called the turbulent stripe, and investigated its energy transport process in each region, using a direct numerical simulation. We obtained the budget for Reynolds stresses, including v'w' and w'v', and considered a self-sustaining mechanism of the stripe inclining pattern.
