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混流式水轮机轴面流道曲线光滑性研究

RESEARCH ON THE SMOOTHNESS OF THE FLOW CURVE OF THE AXIS SURFACE OF THE MIXED FLOW STYLE HYDROTURBINE
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摘要 对应用二元方法绘制的水轮机轴面流线,当上冠线或下环线的光滑性仅满足函数和一阶导数连续,就会导致轴面流线不光滑(有突跃);当上冠线或下环线的光滑性不仅满足函数和一阶导数连续,而且还满足二阶导数连续,由此绘制的轴面流线就光滑,本文对此进行分析,并作了计算机实验研究。 With two-dimension method, the flow curve can be drawn on the axis surface. When the smoothness of the upper cover line or down cover line only confirms to the continuum of the function and the first derivative. the flow curves can not be made smooth (having a sudden change).When the smoothness accords with not only the continuum of the function and the first derivative but also the continuum of the second derivative, the flow curve on the axis surface will become smooth. This paper has made an analysis and experimental research by computer.
作者 王萍 陈月林
出处 《上海工程技术大学学报》 CAS 1998年第2期32-36,共5页 Journal of Shanghai University of Engineering Science
关键词 流道 曲面流线 光滑性 水轮机 混流式 Hydraulic turbine Passageway Curve fitting
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