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目前,喷灌管道沿程水力损失的计算,普遍采用哈森—威廉斯公式和斯可贝公式。近年来,不断有文献指出:采用这两个公式计算的结果,与实测所得的结果相差很大。此外,对于各种喷灌管道的水力损失,国内只进行了一些零星的测试工作,尚未得出较精确、较系统、较全面的水力损失计算公式。本文在对各种喷灌管道进行了大量测试的基础上,推荐出一系列水力损失的计算公式。
At present, the calculation of hydraulic loss along the sprinkler pipe is generally based on the Hessian-Williams formula and the Scorsese formula. In recent years, there have been continuously pointed out in the literature that the results calculated by using these two formulas differ greatly from those obtained by the actual measurement. In addition, there are only a few sporadic tests carried out in China for the hydraulic losses of various sprinkler pipelines, and a more accurate, systematic and comprehensive hydraulic loss formula has not been obtained yet. Based on a large number of tests on various sprinkler pipelines, this paper presents a series of formulas for calculating hydraulic losses.