COMPUTER PROGRAM FOR PREDICTING EMISSION UNIFORMITY OF ODD-SHAPED SUBUNITS IN DRIP IRRIGATION SYSTEM

Document Type : Original Article

Authors

1 Assist. Prof., Ag. Eng. Dept., Faculty of Agriculture, Cairo University, Egypt.

2 Prof., Ag. Eng. Dept., Faculty of Agriculture, Cairo University, Egypt.

3 Prof. Hydraulic & Irri. Dept., Faculty of Engineering, Cairo University, Egypt.

Abstract

Computer program was made to predict the emission uniformity in odd-shaped irrigation subunits. The computer program of Odd-shaped Subunits Designer [OSSD] contains three modules; first dealing with emitter characteristics, second dealing with subunit geometry and third dealing with subunit design. The results of this work indicated that the predicted values of the emission uniformity in rectangular, trapezoidal and triangular irrigation subunits of equal area were in good agreement with field measurement.

Main Subjects

References

Abdel-Wahed, M. H. 2002. Applying computer techniques for the determination of some crop water requirements and irrigation scheduling in designing drip irrigation system. Ph.D. Thesis. Ag. Eng. Dept., Fac. of Ag., CairoUniv.
Awady, M. N. and O. M. Ahmed. 1996. Planning trickle irrigation systems by computer aid. 4th Conference of MSAE 13 (4): 87 – 104.
Bralts, V. F. and L. J. Segerlind. 1985. Finite element analysis of drip irrigation submain units. Transaction of ASAE. 28(3): 809 - 814.
Bralts, V. F., Kelly, S. F., Shayya, W. H. and L. J. Segerlind. 1993. Finite element analysis of Microirrigation hydraulics using virtual emitter system. Transaction of ASAE. 36(3): 717 - 725.
Gomes, H. P. 1996. A software for optimum design of trickle irrigation pipeline systems, 6th Inter. Conf. on computer in Ag., Mexico.
Ismail, S. M., E. R. El-Ashry, G. A. Sharaf., and M. N. El-Nesr. 2001. Computer aided design of trickle irrigation system. Misr J. Ag. Eng., 18(2): 243 – 260.
Kang, Y. and S. Nishiyama. 1994. Finite element method analysis of Microirrigation system pressure distribution. Trans., Japanese Soc. Of Irrig., Drain. And Reclamation Eng., Tokyo. Japan. 169, 19 - 26.
Kang, Y. and S. Nishiyama. 1995. Hydraulic analysis of Microirrigation submain units. Transaction of ASAE, 38 (5), 1377 – 1384.
Kang, Y. and S. Nishiyama. 1996. Design of Microirrigation submain units. J. Irrig. And Drain. Engrg., ASCE, 122(2): 75 - 82.
Keller, J. and D. Karmeli. 1975. Trickle irrigation design. Rain Bird Sprinkler Manufacturing Corporation, Glendora, CA, 133p.
Keller, J. and J. Rodrigo. 1979. Trickle irrigation lateral design. ASAE Technical Paper No. 79 – 2570.
Keller, J. and R.D. Bliesner. 1990. Sprinkler and Trickle irrigation. Published by Van Nostrant Reinhold, New York10003.
Mahrous, A., M. Hanafy., A. S. Bazaraa. And G. A. Gomaa. 2004. Mathematical model for predicting emission uniformity of ODD-shaped subunits in drip irrigation system. Modern Technology in Agric. Researches and Application. The 12th Conference of Misr Society of Agr. Eng., 4-5 October 2004: 222-238.
Reddy, K. Y., Tiwari. K. N. and V. Ravindra. 2000. Hydraulic analysis of trickle irrigation system for economic design. Inter. Ag. Eng. J.9(2):81-95.
Sharaf, G. A. 1991. Models for design and evaluation of drip irrigation systems. PhD. Dissertation, Dept. of Water Management and Land Reclamation, Ag. Uni. Godollo, Hungary.
Sharaf, G. A. 1996. Optimal design of trickle irrigation submain unit. Misr J. Ag. Eng., 13(3): 501 – 515.
Sharaf, G. A. 2004. A study of water distribution uniformity of microirrigation subunit. Misr J. Ag. Eng., 21(1): 103 – 124.
Sosa, G. M. 1996. Program of design of water distribution network using low pressure pipelines. 6th Inter. Conf. on computer in Ag., Mexico.
Wu, I. P. and H. M. Gitlin. 1975. Energy gradient line for drip irrigation laterals. J. Irrig. and Drainage Div. of the ASCE 101(IR4): 323 - 326.
Misr Journal of Agricultural Engineering
Volume 25, Issue 4
October 2008
Pages 1240-1255

Files

Share

How to cite

Statistics