homogeneous isotropic turbulence, DNS, direct numerical simulation, fine vortex tube, high resolution, spatial mesh point, numerical wind tunnel, turbulent vorticity, temperature field, flow visualization
その他のタイトル（英）
Fine structure of homogeneous isotropic turbulence
Direct Numerical Simulation (DNS) of decaying homogeneous isotropic turbulence with a high resolution (512(exp 3) spatial mesh points) is carried out using the numerical wind tunnel. Fine organized structures of the turbulent vorticity and temperature fields obtained by the simulation are visualized with a graphic work station. It is observed that the intense vorticity concentrates into local fine vortex tubes, but the intense temperature gradient concentrates into local sheet-like layers.
一様等方性乱流の微細構造
nalsp0036021.pdf
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