138 Unsteady Flow
Part 12. Open-Channel Flow
Published Online: 15 APR 2006
Copyright © 2005 John Wiley & Sons, Ltd
Encyclopedia of Hydrological Sciences
How to Cite
Graf, W. H. and Altinakar, M. S. 2006. Unsteady Flow. Encyclopedia of Hydrological Sciences.
- Published Online: 15 APR 2006
Flow is unsteady, if the flow depth as well as other hydraulic parameters vary with time. An unsteady flow is usually also nonuniform. The one-dimensional hydrodynamic equations, known are the equations of Saint-Venant, are developed. The simplified equations of Saint-Venant are used to treat the kinematic wave as well as the diffusive wave. The flood wave is also briefly discussed. Numerical solutions to unsteady flow will be treated in a subsequent chapter (see Numerical Modeling of Unsteady Flows in Rivers).
- open-channel flow;
- unsteady flow;
- equations of Saint-Venant, kinematic wave;
- diffusive wave;
- flood wave