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《Acta Scientiarum Naturalium Universitatis Pekinensis》 2006-05
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Experimental Research on the Chaos Characteristics during Reverse Transition

ZHANG Zhen 1) YAN Dachun 2)( 1)China Academy of Aerospace Aerodynamics, Beijing, 100074; 2)Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, 100871)  
Nonlinear dynamics parameters, such as correlation dimension, maximum Lyapunov exponent and Kolmogorov entropy, which reflect the chaos characteristics of flow field are calculated with the time series of instantaneous velocity during reverse transition. Computational results show that chaos exists during reverse transition. Contrary to transition, the flow regimes during reverse transition experience the process of turbulence-chaos-laminar flow.
【CateGory Index】: O357.5
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