contributor author | Prabhata K. Swamee | |
contributor author | Deepak Kashyap | |
date accessioned | 2017-05-08T20:49:25Z | |
date available | 2017-05-08T20:49:25Z | |
date copyright | April 2004 | |
date issued | 2004 | |
identifier other | %28asce%290733-9437%282004%29130%3A2%28166%29.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/28246 | |
description abstract | Analytical solutions exist for the seepage discharge from polygonal and nonpolygonal canal sections underlain by a drainage layer at a hydraulically infinite depth. These solutions lead to underestimation of the seepage discharge if a drainage layer occurs at a shallow depth. This paper presents solutions for seepage discharge from circular and exponential sections overlying a shallow drainage layer. The discharge has been calculated by a finite-difference-based numerical solution of the differential governing the seepage flow. The phreatic boundaries of the flow domain were described in terms of two parameters that were estimated by a minimization process. Such seepage computations were performed for a large number of independent dimensionless variables of the section geometry. Subjecting the computed seepage to regression analyses, explicit equations for seepage discharge loss have been obtained. Using these seepage loss equations, the design variables for minimum seepage loss have been obtained. The use of the design equations has been illustrated by design examples. | |
publisher | American Society of Civil Engineers | |
title | Design of Minimum Seepage-Loss Nonpolygonal Canal Sections with Drainage Layer at Shallow Depth | |
type | Journal Paper | |
journal volume | 130 | |
journal issue | 2 | |
journal title | Journal of Irrigation and Drainage Engineering | |
identifier doi | 10.1061/(ASCE)0733-9437(2004)130:2(166) | |
tree | Journal of Irrigation and Drainage Engineering:;2004:;Volume ( 130 ):;issue: 002 | |
contenttype | Fulltext | |