Dam break wave of thixotropic fluid

Chanson, H., Jarny, S. and Coussot, P. (2006) Dam break wave of thixotropic fluid. Journal of Hydraulic Engineering-asce, 132 3: 280-293.

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Author Chanson, H.
Jarny, S.
Coussot, P.
Title Dam break wave of thixotropic fluid
Journal name Journal of Hydraulic Engineering-asce   Check publisher's open access policy
ISSN 0733-9429
Publication date 2006
Sub-type Article (original research)
DOI 10.1061/(ASCE)0733-9429(2006)132:3(280)
Volume 132
Issue 3
Start page 280
End page 293
Total pages 14
Editor Robert Ettema
Place of publication United States
Publisher American Society of Civil Engineers
Collection year 2006
Language eng
Subject C1
290899 Civil Engineering not elsewhere classified
770402 Land and water management
Abstract Thixotropy is the characteristic of a fluid to form a gelled structure over time when it is not subjected to shearing, and to liquefy when agitated. Thixotropic fluids are commonly used in the construction industry (e.g., liquid concrete and drilling fluids), and related applications include some forms of mud flows and debris flows. This paper describes a basic study of dam break wave with thixotropic fluid. Theoretical considerations were developed based upon a kinematic wave approximation of the Saint-Venant equations down a prismatic sloping channel. A very simple thixotropic model, which predicts the basic theological trends of such fluids, was used. It describes the instantaneous state of fluid structure by a single parameter. The analytical solution of the basic flow motion and theology equations predicts three basic flow regimes depending upon the fluid properties and flow conditions, including the initial degree of jamming of the fluid (related to its time of restructuration at rest). These findings were successfully compared with systematic bentonite suspension experiments. The present work is the first theoretical analysis combining the basic principles of unsteady flow motion with a thixotropic fluid model and systematic laboratory experiments.
Keyword Engineering, Civil
Engineering, Mechanical
Water Resources
Dam Failure
Debris
Bentonite
Industrial Wastes
Wastewater
Bingham Fluid
Flow
Mud
Suspensions
Channel
Steady
Model
Q-Index Code C1

 
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