Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
권호 표지
DOI QR코드

DOI QR Code

An Analysis of Surface irrigation's Hydraulic Characteristics at a Paddy Field Using a Two-Dimensional Numerical Model

2차원 유한체적 수치모형을 이용한 논의 지표관개 수리특성 분석

  • 박승우 (서울대학교 농업생명과학대학 생물자원공학부) ;
  • 박종민 (농림부) ;
  • 강민구 (한국수자원공사 수자원연구원)
  • Published : 2004.07.30
Download PDF
⟨ Previous Next ⟩

Abstract

A finite volume model is developed to simulate the surface irrigation at a paddy field. The model's capabilities are validated through comparison with the simulafed results and the observed data obtained by various experimental tests, and the simulated results are in good agreement with the observed pending depth. The result of surface irrigation simulation shows that the longer the paddy field's the length of long-sided becomes, the longer the advance and storage time is taken. To analyze surface irrigation performance with variable inflow rate, three patterns of flow variation-constant rate, initially high then low, and initially low then high-were studied. The results show that at the pattern with initially high followed by low during the latter half of the irrigation the advance time is shortest, but the pending depth of irrigation completion and irrigation effiency are the little difference between irrigation patterns.

Keywords

References

  1. Chung, H. W., J. Y. Choi, D. S. Kim, K. U. Park, and S. J. Bae. 1997. Hydraulic characteristics of surface irrigation in paddy field of direct seeding culture. Journal of the korean Society of Agricultural Engineers 39(4) : 64-74. (in Korean)
  2. Jifu Y., Anyoji H, and Tada A. 1995. Relationship between length of paddy and inlet flow rate. Transaction of The Japanese Society of Irrigation, Drainage and Reclamation Engineering 179 : 57-68. (in Japanese)
  3. Kang, M. G. and S. W. Park. 2003. A finite volume model using ENO scheme for 2d unsteady flows. Journal of Korea Water Resources Association 36(1) : 1- 11. (in Korean) https://doi.org/10.3741/JKWRA.2003.36.1.001
  4. Lee, K. S. and S. T. Lee. 1998. Two-dimensional finite volume unsteady-flow model for shorks. Journal of Korea Water Resources Association 31(3) : 279-290. (in Korean)
  5. Masato S., Masataka K., Chikara K., 1995, Planning of enlarged paddy field block and improvement level, Journal of The Japanese Society of Irrigation, Drainage and Reclamation Engineering 63(9) : 931- 936(in Japanese)
  6. Playan, E., Walker, W. R., and Merkley, G. P. (1994), Two-dimensional simulation of basin irrigation. I: theory, Journal of Irrigation and Drainage Engineering, 120(5) : 837-856 https://doi.org/10.1061/(ASCE)0733-9437(1994)120:5(837)
  7. Playan, E., Walker, W. R., and Merkley, G. P. (1994), Two-dimensional simulation of basin irrigation. II: application, Journal of Irrigation and Drainage Engineering, 120(5) : 857-870 https://doi.org/10.1061/(ASCE)0733-9437(1994)120:5(857)
  8. Singh V., and Bhallamudi S. M., 1997, Hydrodynamic modeling of basin irrigation, Journal of Irrigation and Drainage Engineering, 123(6) : 407-414 https://doi.org/10.1061/(ASCE)0733-9437(1997)123:6(407)
  9. Song, C. S. and S. W. Park. 1994. Surface and subsurface drainage characteristics of a paddy field. Seoul National University Journal of Agricultural Sciences 19(2) : 49-62. (in Korean)