物理学报2012，Vol.61Issue(19)：287-293,7.
一维短沟槽复合准晶结构减阻效应及模拟分析
Mechanism analysis of one-dimensional short groove quasicrystal structure drag-reduction
摘要
Abstract
Short groove arranged in one-dimensional quasicrystal structure is designed by mechanical method in this paper and drag reduc- tion experiments are performed by viscometer. The results show that there is a novel drag reduction effect compared with periodic structure of one-dimensional short groove, in which 12-fold quasicrystal structure of one-dimensional short groove has the best drag reduction, and has an equal effect compared with one-dimensional periodic groove structure. An two-dimensional grating model is proposed to investigate the mechanism. It is found that in comparison with two-dimensional periodic grating, the intensity spectrum of coherent wave passing through two-dimensional quasiperiodic grating has several characteristic structure factors. Corresponding to the quasicrystal structures of one-dimensional short groove, the quasiperiodic structure in spanwise direction can activate little disturbance on boundary layer and make the secondary vortex more uniform, which restrains the strong disturbance in spanwise, consequently reducing the drag.关键词
一维短沟槽复合准晶结构/流体减阻/二维光栅模型/谱带结构Key words
quasicrystal structure/drag reduction/two-dimensional grating model/characteristic structure factors分类
数理科学引用本文复制引用
张盟,耿兴国,张瑶,王晓娜..一维短沟槽复合准晶结构减阻效应及模拟分析[J].物理学报,2012,61(19):287-293,7.基金项目
国家自然科学基金（批准号：10872172）和西北工业大学研究生创业种子基金（批准号：z2012234）.资助的课题. （）
