CAJ | 학술논문

根据实测资料,采用3点法、5点法对比计算分析了原型和长江防洪实体模型的垂线平均流速两者间差异,同时比较分析原型与模型流速沿水深分布偏离程度.采用明渠对数流速公式探讨了模型变态后流速沿垂线分布的规律,在此基础上提出了长江防洪实体模型垂线平均流速与相对水深某位置处点流速的关系,观测资料分析表明,模型相对水深为0.6处的点水深处流速与垂线平均流速基本一致.
근거실측자료,채용3점법、5점법대비계산분석료원형화장강방홍실체모형적수선평균류속량자간차이,동시비교분석원형여모형류속연수심분포편리정도.채용명거대수류속공식탐토료모형변태후류속연수선분포적규률,재차기출상제출료장강방홍실체모형수선평균류속여상대수심모위치처점류속적관계,관측자료분석표명,모형상대수심위0.6처적점수심처류속여수선평균류속기본일치.
According to the comparative analysis of the differences between data measured by three-point method and five-point method used in the Yangtze River Flood Control prototype and model, and those data measured by vertically-average flow velocity method adopted in the physical model, the deviation degrees of prototype-model flow velocities along water depth are compared. The authors discuss the law of velocity distribution along the vertical direction after model metamorphosis using the Nullah-Logarithmic velocity equation, and, on the basis of this analysis, propose the relations between the average vertical velocity and the relative location of the depth. Observation data analysis show that velocity of the 0.6 relative water depth is basically consistent with the average vertical velocity.