挑流水舌空中横向扩散比尺效应研究

Scale Effect of Transverse Diffusion for Ski-jump Flow

为定量研究比尺因素对水舌横向扩散宽度的影响,基于比尺效应量纲分析,在多比尺挑流水舌流态分析的基础上研究比尺效应影响因素下水舌扩散演变规律。结果表明,在当前研究范围内,水舌扩散宽度主要与雷诺数、韦伯数、弗劳德数相关,进而建立了基于这些参数的水舌沿程宽度经验计算式,可供实际工程参考应用。

To quantitatively investigate the impact of scale factors on jet transverse diffusion width,based on the dimensional analysis of scale effect,this paper studied jet diffusion evolution affected by the scale effect on the basis of flow regime analysis.The results show that the jet diffusion width is mainly related to Reynolds number,Weber number and Froude number in the current research range.Furthermore,considering the above parameters,an empirical formula for calculating jet width was established.The research results can be used in practical engineering.