常曲率弯道二维流动稳定性与非线性演化规律分析 1)
ANALYSIS OF HYDRODYNAMIC INSTABILITY AND NONLINEAR EVOLUTION CHARACTERISTICS OF TWO DIMENSIONAL FLOW IN CONSTANT CURVATURE BEND 1)
常曲率弯道二维流动稳定性与非线性演化规律分析 1) |
| 李彬, 徐海珏, 白玉川, 冀自青 |
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ANALYSIS OF HYDRODYNAMIC INSTABILITY AND NONLINEAR EVOLUTION CHARACTERISTICS OF TWO DIMENSIONAL FLOW IN CONSTANT CURVATURE BEND 1) |
| Li Bin, Xu Haijue, Bai Yuchuan, Ji Ziqing |
| 图13 不同扰动幅角下的弯道全域扰动流速分布(2)在相同雷诺数下, 随着弯曲度的增大, 扰动幅值随时间的衰减速度增大, 即在初始扰动在经历了一定的时间后会逐渐消失,扰动流场具有非线性衰减效应. 扰动幅角随时间呈现单调下降的趋势, 弯曲度越大,扰动幅角随时间下降的更快. |
| Fig.13 Disturbance velocity distribution in the whole bend under different disturbance angles |
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