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su liao guan guang hua wen liu gong shi chu bu fen xi
Pages: 23-27+64
Year: Issue:  2
Journal: Water Saving Irrigation

Keyword:  plastic pipelinesmooth turbulence formula;
Abstract: As water resources shortage are pressing, new techniques of water—saving irrigation are rapidly developing, such as sprinkler irrigation, drip irrigation and surface irrigation supplied through low—pressure pipeline, thus promting the use of plastic pipes. At present, unlike the formulae of the original pipe, the formulae of hydraulic calculation of plastic pipes has effect on the quality of designing and irrigation. We have mainly tested the hydraulic friction of the plastic pipeline at the time when we deal with the problem of surface irrigation with low—pressure pipeline and micro—irrigation. This paper analyzes and verities the formulae of smooth turbulence of plastic pipeline, to explicit the range of suitablity and to improve precision of designing.
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