PRESSURE LOSSES FROM FRICTION AND LOCAL RESISTANCE FOR TURBULENT FLOW REGIME IN PE PIPES Ф16/2

Authors

  • Roumen Gadjev Institute of Soil Science, Agrotechnologies and Plant Protection “Nikola Poushkarov”, Sofia, Bulgaria

Keywords:

pressure flows, flow regimes, pressure losses, flow coefficient of resistance.

Abstract

This paper presents the results obtained from laboratory experiments for total pressure losses in turbulent flow regime with drip irrigation smooth pipes PE16/2, 12,7 mm in diameter. Relationships for determination the sum of friction and local pressure losses in drip laterals with diffferently spaced local resistance (drippers) are presented. The relationship for determination of total coefficient of resistance and head losses obtained from the experimental and analytical studies is shown as well.

References

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Gadzhev, R., 1998, Zagubi na napor v prehodno kritichen rezhim pri polietilenovi trabi, Izvestiya na IHM-SSA, tom HHV, Sofiya.

Frenkely N., 1956, Gidravlika, Gosenergoizdat, M.

Lencastre A., (1969), Manuel d’hydraulique generale, Eurolles, Paris.

Nikuradse J., 1932, Gesetzmassigkeit der turbulenten Stromung in glatten Rohren, Forschg., Arb.Ing.- Wes.

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Issue

Vol. 7 No. 2 (2018): New knowledge Journal of science

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Articles

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