✦ LIBER ✦

ERRORS OF KINEMATIC-WAVE AND DIFFUSION-WAVE APPROXIMATIONS FOR SPACE-INDEPENDENT FLOWS ON INFILTRATING SURFACES

✍ Scribed by V. P. SINGH

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 639 KB
Volume: 10
Category: Article
ISSN: 0885-6087
DOI: 10.1002/(sici)1099-1085(199607)10:7<955::aid-hyp350>3.0.co;2-g

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✦ Synopsis

Error equations for the kinematic-wave and diffusion-wave approximations were derived under simplified conditions for space-independent flows occurring on infiltrating planes or channels. These equations specify error as a function of time in the flow hydrograph. The kinematic-wave, diffusion wave and dynamic-wave solutions were parameterized through a dimensionless parameter 7 which is dependent on the initial conditions. This parameter reflects the effect of initial flow depth, channel-bed slope, lateral inflow and channel roughness when the initial condition is non-vanishing; and it reflects the effect of bed slope, channel roughness, lateral inflow and infiltration when the initial condition is vanishing. The error equations were found to be the Riccati equation.

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