contributor author | Xin Huang | |
contributor author | Marcelo H. García | |
date accessioned | 2017-05-08T20:42:43Z | |
date available | 2017-05-08T20:42:43Z | |
date copyright | November 1997 | |
date issued | 1997 | |
identifier other | %28asce%290733-9429%281997%29123%3A11%28986%29.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/24372 | |
description abstract | An analytical solution is proposed for laminar mudflows and debris flows that can be modeled by a Bingham-plastic law. Two-dimensional, unsteady, nonuniform, Bingham flows released from a point source or a source of finite size (dam-break problem or mudslide problem) on a steep slope are considered. The method of matched asymptotic expansions was implemented to get a first-order solution. For the dam-break problem, the proposed model is found to be valid when the shock wave has advanced three reservoir lengths downstream. Also, it is found that the Bingham flow only propagates a finite distance downstream, with the shock depth asymptotically approaching the yield depth and the shock velocity asymptotically falling to zero. The hydrograph produced by a Bingham flow is seen to have a slower and lower flood peak and a longer and higher flow tail than that produced by Newtonian flow having the same dynamic viscosity. Comparison of the model predictions with laboratory observations shows reasonable agreement. | |
publisher | American Society of Civil Engineers | |
title | A Perturbation Solution for Bingham-Plastic Mudflows | |
type | Journal Paper | |
journal volume | 123 | |
journal issue | 11 | |
journal title | Journal of Hydraulic Engineering | |
identifier doi | 10.1061/(ASCE)0733-9429(1997)123:11(986) | |
tree | Journal of Hydraulic Engineering:;1997:;Volume ( 123 ):;issue: 011 | |
contenttype | Fulltext | |