TY - JOUR
T1 - LiDAR DEM and HEC-RAS On-Grid Rainfall Hydrograph Model for Irrigation System
AU - Ontowirjo, B.
AU - Fathurrahman, I.
AU - Ramadhan, M. V.
AU - Zahriani, A.
AU - Zahra, M.
AU - Wahyudi, H.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2023
Y1 - 2023
N2 - The capacity of the Saddang River Irrigation Canal will be increased by 30% to accommodate long-term irrigation discharge needs. Analysis of the hydraulic model of the irrigation and discharge channels is examined in this study. High resolution LiDAR Digital Elevation and HEC-RAS Model are used to estimate the flow depth and velocities in the event of rain with extreme intensity. HEC-RAS Model solves the 2-D depth-averaged St.Venant equations that are mainly used for river simulation. The HEC-RAS model uses on-grid precipitation hydrograph and flexible meshes that may contain arbitrarily quadrilateral and triangular cells. A hybrid mesh may achieve the best compromise between solution accuracy and computing demand. The HEC-RAS model solved variables include water surface elevation, water depth, depth averaged velocity, Froude number, and bed shear stress. The optimization of the model is useful for improving the drainage modulus, lining channel, drain time period and the performance of the irrigation and drainage channels.
AB - The capacity of the Saddang River Irrigation Canal will be increased by 30% to accommodate long-term irrigation discharge needs. Analysis of the hydraulic model of the irrigation and discharge channels is examined in this study. High resolution LiDAR Digital Elevation and HEC-RAS Model are used to estimate the flow depth and velocities in the event of rain with extreme intensity. HEC-RAS Model solves the 2-D depth-averaged St.Venant equations that are mainly used for river simulation. The HEC-RAS model uses on-grid precipitation hydrograph and flexible meshes that may contain arbitrarily quadrilateral and triangular cells. A hybrid mesh may achieve the best compromise between solution accuracy and computing demand. The HEC-RAS model solved variables include water surface elevation, water depth, depth averaged velocity, Froude number, and bed shear stress. The optimization of the model is useful for improving the drainage modulus, lining channel, drain time period and the performance of the irrigation and drainage channels.
UR - http://www.scopus.com/inward/record.url?scp=85169879975&partnerID=8YFLogxK
U2 - 10.1088/1755-1315/1198/1/012023
DO - 10.1088/1755-1315/1198/1/012023
M3 - Conference article
AN - SCOPUS:85169879975
SN - 1755-1307
VL - 1198
JO - IOP Conference Series: Earth and Environmental Science
JF - IOP Conference Series: Earth and Environmental Science
IS - 1
M1 - 012023
T2 - 10th International Seminar on Ocean, Coastal Engineering, Environmental and Natural Disaster Management, ISOCEEN 2022
Y2 - 29 November 2022
ER -