基于流速幂级数解的明渠纵向离散系数计算方法
发布时间:2018-11-09 10:44
【摘要】:针对纵向离散系数计算多直接采用经验公式或在流速分布的求解中引入经验公式,不能完全反映离散物理机制的问题,基于矩形断面一维水流控制方程,利用幂级数求解流速分布的理论解,提出了矩形断面明渠纵向离散系数的计算方法,并进一步将其推广至天然河流。利用该方法计算了104条天然河流的纵向离散系数,结果表明计算值与实测值处于同一量级,计算结果在可接受范围内。
[Abstract]:In order to solve the problem that the longitudinal discrete coefficient is calculated directly by empirical formula or the empirical formula is introduced into the solution of velocity distribution, it can not reflect the discrete physical mechanism completely, based on the one-dimensional flow control equation of rectangular section. By using power series to solve the theoretical solution of velocity distribution, a method for calculating longitudinal discrete coefficients of rectangular cross-section open channels is proposed, which is further extended to natural rivers. The longitudinal dispersion coefficients of 104 natural rivers are calculated by using this method. The results show that the calculated values are of the same order of magnitude as the measured values, and the calculated results are within the acceptable range.
【作者单位】: 中央民族大学生命与环境科学学院;
【基金】:国家自然科学基金(51479218)
【分类号】:TV133
本文编号:2320174
[Abstract]:In order to solve the problem that the longitudinal discrete coefficient is calculated directly by empirical formula or the empirical formula is introduced into the solution of velocity distribution, it can not reflect the discrete physical mechanism completely, based on the one-dimensional flow control equation of rectangular section. By using power series to solve the theoretical solution of velocity distribution, a method for calculating longitudinal discrete coefficients of rectangular cross-section open channels is proposed, which is further extended to natural rivers. The longitudinal dispersion coefficients of 104 natural rivers are calculated by using this method. The results show that the calculated values are of the same order of magnitude as the measured values, and the calculated results are within the acceptable range.
【作者单位】: 中央民族大学生命与环境科学学院;
【基金】:国家自然科学基金(51479218)
【分类号】:TV133
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