Irrigação por gotejamento

II — Características hidráulicas de linhas laterais de irrigação com microgotejador irtec

Authors

  • Manoel Alves de Faria UFV
  • Salassier Bernardo UFV
  • Paulo Afonso Ferreira UFV
  • Blanor Torres Loureiro UFV

Keywords:

irrigação por gotejamento, perda de carga, coeficiente de rugosidade, número de Reynolds, fator de atrito

Abstract

At the Hydraulics Laboratory of the Federal University of Viçosa, Viçosa, Minas Gerais, Brazil, a study was conducted to determine the hydraulic characteristics of lateral irrigation lines for a drip irrigation system using the micro-drip IRTEC.

Equations to calculate head loss in polyethylene tubes were derived. The friction coefficients of Hazen-Williams (C) and of Darcy-Weisbach (f) were determined, as were the values of Christiansen’s coefficient (F) and the maximum number of drips that can be used per line.

References

ASSY, T. M. O emprego da fórmula universal de perda de carga e as limitações das formulas empíricas. São Paulo, CETESB, 64 p. 1977.

BEZDEK, J. C. & SOLOMON, K. Approximating friction factors for trickle tubing. Journal of the Irrigation and Drainage Division, 104 (IR4):351-359, 1978.

CHRISTIANSEN, J.E. Irrigation by Sprinkling. Berkeley, California Agricultural Station, 1942. 124 p. (Bul. 670).

FARIA, M.A. Características hidráulicas do microgotejador IRTEC e da linha lateral de irrigação. Viçosa, U.F.V., Imprensa Universitária, 1981. 78 p. (Tese M.8).

HANSON, G.R. Hydraulics of trickle irrigation emiter lines. Logan, Utah State University, 1973. 94 p. (Tese M.S.).

HAUGH, C. G. & BOWERS, W. Pressure losses in plastic tubing and fittings. Agricultural Engineering, 43(1):26-29, 1962.

HOWELL, T. A. & HILER, E.A. Trickle irrigation lateral design. Transactions of he ASAE, 17(5):902-908. 1974.

KELLER, J. & KARMELI, D. Trickle irrigation design. California, Raind Bird Sprinkler Manufacturing Corporation, 1975. 133 p.

OLIVEIRA, C.A.S. Hidráulica de gotejadores e de linhas laterais para irrigação por gotejamento. Viçosa, U.F.V. Imprensa Universitária, 1978. 72 p. (Tese M.8).

WU, 1. P. & GITLIN, H. M. Drip irrigation design based on uniformity. Transactions of the ASAE, 17 (3):429-432, 1974.

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Published

2025-04-03

How to Cite

Alves de Faria, M., Bernardo, S., Ferreira, P. A., & Torres Loureiro, B. (2025). Irrigação por gotejamento: II — Características hidráulicas de linhas laterais de irrigação com microgotejador irtec. Revista Ceres, 29(165), 479–488. Retrieved from https://ojs.ceres.ufv.br/ceres/article/view/7211

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