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Development of a computer model for long-throated flumes based on manning equation and different side slopes of trapezoidal channels | ||
| Iran Agricultural Research | ||
| مقاله 2، دوره 37، شماره 2، اسفند 2018، صفحه 9-16 اصل مقاله (382.45 K) | ||
| نوع مقاله: Full Article | ||
| شناسه دیجیتال (DOI): 10.22099/iar.2018.4925 | ||
| نویسندگان | ||
| M. Mahbod* 1؛ Sh. Zand-Parsa2 | ||
| 1Department of Water Engineering, College of Agricultural, Jahrom University, Jahrom, I. R. Iran | ||
| 2Department of Water Engineering, College of Agricultural, Shiraz University, Shiraz I. R. Iran | ||
| چکیده | ||
| ABSTRACT- Measurement of irrigation water in agricultural areas is necessary, especially, in arid and semi-arid regions. Long-throated flumes have been used to measure irrigation water and are known to be inexpensive devices with high performances. In these structures, head-discharge tables are predicted theoretically with no need to calibrate. In this study, the model of LOTF (LOng Throated Flumes) was developed in VB. net programming language, in which, friction head loss and h-Q (h is head at measuring station and Q is discharge) tables were predicted by using the Manning's equation. The predicted tables of h-Q by the LOTF model were perfectly similar to the results of Win Flume and HEC-RAS model which are universally used for these flumes and open channel flow, respectively. Calculated h-Q tables in trapezoidal flumes with two different side slopes of 0 and 1, 0 and 2, and 0 and 4 were computed by the LOTF and HEC-RAS models and were the same as those predicted by the WinFlume model with equal average of these side slopes of channel. At a water depth, in trapezoidal sections with different and equal average side slopes, the resulted h-Q tables in the three models were the same. | ||
| کلیدواژهها | ||
| Keywords:؛ Long-throated-flumes؛ Manning's equation؛ Win Flume model؛ LOTF model؛ head-discharge table | ||
| مراجع | ||
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Ackers, P., White, W. R., Perkins, J. A., & Harrison, A. J. M. )1978(. Weirs and Flumes for Flow Measurement. New York, John Wiley & Sons.
Bos, M., & Reinink G. Y. (1981). Head loss over long-throated flumes. Journal of Irrigation and Drainage Division, 107, 87-102.
Bos, M. G., Replogle, J. A., & Clemmens, A. J. (1984). Flow Measuring Flumes for Open Channel Systems. New York, John Wily and Sons.
Clemmens, A. J., Replogle, J. A., & Bos, M. G. (1987). FLUME : A computer model for estimating flow rates through long-throated measuring flumes, , Agricultural Research Service, U.S. Department of Agriculture, U.S. Government Printing Office, Washington, DC: ASR-57.
Clemmens, A. J., Wahl, T. L. Bos, M. G., & Replogle, J. A. (2001). Water measurement with flumes and weirs. Wageningen: ILRI Publication 58.
Clemmmens, A. J. Bos, M. G., & Replogle, J. A. (1993). Flumes: Design and calibration of long-throated measuring Flumes. Version 3.0. Wageningen: ILRI, Publication 54.
Guan, G., Liu, T., Wang, C., Chen, H., & Yao, X. (2014). Effect of side contraction on long-throated flume calibration. NongyeGongchengXuebao/Transactions of Chinese Society of Agricultural Engineering, 30(13), 1-9.
Jihan, M. Q. )2013(. Laboratory and HEC-RAS simulation of a single step weir. ARPN Journal of Engineering and Applied Sciences, 8, 1005-1011.
Jowhar, R. M., & Jihan M. Q. )2012(. Comparison of one-dimensional HEC-RAS with two-dimensional ADH for flow over trapezoidal profile weirs. Caspian Journal of Applied Sciences Research, 1, 1-12.
Keller, R. (2014) Physical model testing and validation of large long-throated flumes. World Environmental and Water Resources Congress: Water Without Borders, 81, 1312-1321.
Parshall, R. L. (1926). The improved venture flumes. Transaction of American Society Civil Engineers, 89, 841-880.
Raza, A., Latif, M., & Nabi, G. (2007). Fabrication and evaluation of a portable long-throated flume. Irrigation and Drainage, 56, 565-575.
Replogle, J. A. (1975). Critical flow flumes with complex cross-section. In: Irrigation and Drainage in an age of competition for resources, Specialty Conference Proceedings, American Society of Civil Engineers (pp. 266-388). Logan, Utah, USA.
Sahu, M., Khatua, K. K., & Mahapatra, S. S. (2011). A neural network approach for prediction of discharge in straight: compound open channel flow. Flow Measurement and Instrumentation, 22, 438–446.
Skogerboe, G. V., Hyatt, M. L., Anderson, R. K., & Eggleston, K. O. (1967). Design and Calibration of Submerged Open Channel Flow Measurement Structures: Part 3, Cutthroat Flumes. Rep.WG31-4 Utah Water Research Laboratory, Utah State University, Logan U.S. Army Corps of Engineers. (2005). HEC-RAS User Manual. Hydrologic Engineering Center, Davis CA.
Van Den Bosch, B. E. (2004). Field experience on the introduction of flow measurement with flumes in Kosovo. Irrigation and Drainage Systems, 18, 299–313.
Vatankhah, A. R., & Mahdavi, A. (2012). Simplified procedure for design of long-throated flumes and weir. Flow Measurement and Instrumentation, 26, 79-84.
Wahl, T. L., Clemmens, A. J., Replogle, J. A., & Bos, M. G. (2005). Simplified design of flumes and weirs. Irrigation and Drainage, 54(2), 231–247
Wahl, T. L., Replogle, J. A., Wahlin, B. T., & Higgis, J. A. )2000(. New developments in design and application of long-throated flumes. Proceedings of the 2000 Joint Conference on Water Resource Engineering and Water Resources Planning and Management. Minneapolis, Minnesota. USA. | ||
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