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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(4): 908-920
DOI: https://doi.org/10.20546/ijcmas.2020.904.109


Estimate Roughness Coefficient and Water Lost During the Flow in the Watercourse Situated in the Pusa Farm
Pappu Kumar Paswan1*, Krishan Murari Sharmaand Sudarshan Prasad3
1Krishi Vigyan Kendra, Purnea, (BAU, Sabour , Bhagalpur), India
2College of Agricultural Engineering, (Dr. RPCAU PUSA, Samastipur) Bihar, India
3Department of Irrigation and Drainage Engineering, College of Agricultural Engineering, (Dr. RPCAU PUSA, Samastipur) Bihar, India
*Corresponding author
Abstract:

The field experiments were conducted to compute the Manning’s roughness coefficient initiated during the flow in lined and unlined watercourses located at the Chhounia field near the field of AICRP on IWM and the Brick field beside the KV, Dr. RPCAU, Pusa (Bihar). The average bed slope of the lined watercourse was found to be 1.5 % whereas that of unlined watercourse was observed to be 0.2 %. . The discharge i.e. rate of water flow was determined in both the lined and unlined watercourses with the help of the weir and the Parshall flume, respectively. The water flow rate in lined watercourse was observed to be 0.0058 m3/sec (5.8 lps) while that at upstream and downstream ends of the unlined watercourse were found to be 0.0068 m3/sec (6.8 lps) and 0.0062 m3/sec (6.2 lps), respectively. The higher depth of flow of0.162 m in unlined watercourse than that in lined watercourse (0.047 m) was observed. The lower cross-sectional area of flow (0.0225 m2) in lined watercourse was observed in comparison of that in unlined watercourse (0.107 m2).The velocity of flow were higher in lined water course (0.269 m/s) than that in unlined watercourse (0.069 m/s). The amount of water lost during the 12 hour operation of unlined watercourse was estimated as 782 litres/day/m2.The average conveyance loss of water flow rate per unit wetted area of unlined watercourse was revealed as 0.0181lps/m2.


Keywords: Manning’s roughness coefficient, Water losses, weir and Parshall flume
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How to cite this article:

Pappu Kumar Paswan, Krishan Murari Sharma and Sudarshan Prasad. 2020. Estimate Roughness Coefficient and Water Lost During the Flow in the Watercourse Situated in the Pusa Farm.Int.J.Curr.Microbiol.App.Sci. 9(4): 908-920. doi: https://doi.org/10.20546/ijcmas.2020.904.109