TY  - BOOK
AU  - Rabe,Alan Pielago
AU  - Loof,Rainer
AU  - Paudyal,Guna N.
AU  - Gupta,Ashim Das
AU  - Murty,V.V.N.
ED  - Government of Denmark, 
TI  - Calibration of the roughness parameter for steady and unsteady flow models of an irrigation canal
T2  - Thesis
PY  - 1991///
CY  - Bangkok
PB  - Asian Institute of Technology
KW  - Irrigation canals and flumes
KW  - Hydraulics
N1  - A thesis submitted in partial fulfillment of the requirements for the degree  of Master of Engineering, School of Engineering and Technology; Thesis (M.Eng.) - Asian Institute of Technology, 1991
N2  - 'This study is conducted for estimating the roughness coefficient for steady  and unsteady flow condition s of anon prismatic irrigation canal. The research  comprises of three models: (a) geometric elements calculat1 on model. (b) steady  flow simulation model, and (c) unsteady flow simulation model. As a preliminary  data processing a computer program using FORTRAN was developed for computing  the geometric elements at any desired water stage. Cross-sectional geometry of  each gaging station was measured and the variations in geometr.lc elements was  incorporated in the model. The calibration procedure tries t o match the observed  and simulated water level hydrographs at selected observation stations.  The widely applied Double-Sweep method of linearization for solving the  Saint-Venant's equations was used with the 4-point implicit finite difference  scheme.  In order to mat.ch the observed steady flow t o the simulated flow, different  values of 'n' were computed by iterative procedure. Optimum value of the  roughness coefficient was calibrated in the unsteady flow simulation model.  The model developed was applied to the main reach of the Thabua Sub-Project.  of the Phitsanulok Irrigation Project in Northern Thailand. Results of calibration  show acceptable ranges of 'n ' values as recommended in hydraulic literature
UR  - http://203.159.5.9/ait-thesis/detail.php?q=B17758
ER  -