Underlay mechanism in lift-drag phase diagrams for shear flow over cylinder
作者： Hui Zhang , Bao-chun Fan , Zhi-hua Chen , Yan-ling Li
DOI: 10.1007/S10483-014-1785-8
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摘要: The characteristics of a uniform-shear flow over circular cylinder are investigated numerically by using the alternative-direction implicit (ADI) algorithm and fast Fourier transform (FFT) one in exponential-polar coordinates for Re=150 0⩽K ⩽ 0.46. diagram lift-drag phase, implying detail information about fluctuations drag lift as well patterns wake fluctuating pressure on surface, is used to describe effects shear rate flow. Results show that upper (or lower) closed curve phase corresponds first second) half shedding cycle. will move down-left with increase K such exerted from side lower side, cycle smaller than second half.
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