论文部分内容阅读
针对由两簇平面曲线构成的水泵水轮机全特性传统表达方式存在开度线交叉、聚集和扭卷等强非线性问题,在水泵水轮机全特性空间曲面描述的基础上,根据位置函数的距离特性、特征线变化与过渡过程参数变化均具有连续性的特点,提出了基于等开度线方位角的递推式特征线绘制的搜索算法和单位参数的分解搜索算法,通过水泵水轮机过渡过程计算实例,结果表明搜索算法具有较高的计算精度和计算效率,有效地解决了水泵水轮机工作参数处理问题,为全特性空间曲面描述的工程应用奠定了基础。
Aiming at the strong nonlinear problem of the full characteristic of the pump turbine which consists of two planes of planar curves, the nonlinear characteristics of the full characteristics of the pump turbine such as intersection, convergence and torsion are discussed. Based on the description of the full characteristic space surface of the pump turbine and the distance characteristics of the position function, The feature line changes and the transition process parameters have the characteristics of continuity. Based on the azimuth angle of the equatorial line, a new algorithm of searching the recursion characteristic line and the decomposition search algorithm of the unit parameters are proposed. Through the calculation example of the pump turbine transition process, The results show that the search algorithm has high computational accuracy and computational efficiency, effectively solves the problem of pump turbine operating parameters, and lays the foundation for engineering application of full-featured space surface description.