Finite Difference Formulations of Kinematic Equations
Publication: Journal of Hydraulic Engineering
Volume 121, Issue 5
Abstract
The accuracy of finite-difference solutions to the kinematic equations for runoff modeling is affected when numerical diffusion or instability occurs. The effect of grid ratio and the spatial and temporal weighting coefficients in four-point difference schemes are discussed. Inaccuracies resulting from numerical diffusion are related to the temporal weighting coefficient, and a variable coefficient is suggested to eliminate uncontrolled numerical diffusion. The occurrence of parasitic waves is investigated.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 121 • Issue 5 • May 1995
Pages: 423 - 426
Copyright
Copyright © 1995 American Society of Civil Engineers.
History
Published online: May 1, 1995
Published in print: May 1995
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