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采用旋转锥板式剪切力测试系统,测试了人工构建的具有五次、八次、十次、十二次对称性的二维准晶结构对甘油和水混合液的减阻性能,并与随机排列结构和周期排列结构的流阻进行了对比.对比试验发现:准晶结构具有显著的减阻效果,其中具有十二次对称性的二维准晶结构减阻效应最大,在剪切率为200—2000s-1时,剪切力减小的幅度从15%—9%,其最大减阻量可达到15.4%.进一步在所构建的大尺度二维准晶结构的表面,再复合制备微/纳米粗糙结构,这两种尺度的结构协和作用,可实现减阻效果明显提高.
The shear resistance test system was used to test the drag reduction performance of a two-dimensional quasicrystal structure with five, eight, ten, twelve symmetries. The results were compared with the random The results show that the quasi-crystal structure has a significant drag reduction effect, of which the 12-fold symmetry of the two-dimensional quasicrystal structure has the largest drag reduction effect, and the shear resistance is 200-2000s-1, the shear force decreases by 15% -9%, and the maximum drag reduction can reach 15.4% .At the surface of the large-scale two-dimensional quasi- / Nano-rough structure, the two scales of the synergies of the structure, drag reduction effect can be achieved significantly improved.