1. Estimation of Manning coefficient for the section between Al-Hindiya barrage and Al-Kufa barrage utilizing HEC-RAS
- Author
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Nisren Jasim Hussien Almansori and Zainab Nadhum Hadi
- Subjects
Current (stream) ,Hydrology ,Turbulence ,HEC-RAS ,Flow (psychology) ,Magnitude (mathematics) ,General Medicine ,Surface finish ,Manning formula ,Geology ,Communication channel - Abstract
For the accuracy of simulated water surface profiles, the choosing of the required Manning coefficient is important. Furthermore, in the analysis of flow in open-channel, especially in hydraulic modeling, channel roughness variable forecasting is done. Therefore, it is important to calibrate the channel coefficient roughness for open channels, either artificial or natural. In the current investigation, the magnitude of Manning's coefficient “n” is occurred to calibrate the magnitude of the “n” coefficient by contrasting the simulated profiles of water surface with one reported, utilizing the HEC-RAS turbulent flow model for the Euphrates canal. The flows for the year 2020 were considered for this calibration. The magnitude of the roughness coefficient of Manning for the Euphrates river from Hindiya dam to Kufa dam indicates a strong agreement between the water surface profiles of observed and computed, n = 0.045 and n = 0.047 for the major channel and floodplain, respectively.
- Published
- 2023