小物体を係留した格子によって生成される乱流に関する実験的研究

抄録

Standard ‘ static ’ square grid is incapable of producing intense turbulence , while active grid produces large deviation isotropy isotropy . In this study , we investigated a method to generate the relatively strong and near-isotropic turbulence ‘ passively ’ by tethering a small object such as sphere and cylinder with a string. Turbulence is found to be intensified by oscillation of the small objects and there is clear difference in the manner of oscillation.