Accordement logarithmique et applications en hydraulique numérique et en sédimentation

Translated title of the contribution: Logarithmic matching and its applications in computational hydraulics and sediment transport

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

This study presents an asymptotic matching method, the logarithmic matching. It states that for a complicated nonlinear problem or an experimental curve, if one can find two asymptotes, in extreme cases, which can be expressed as logarithmic or power laws, then the logarithmic matching can merge the two asymptotes into a single composite solution. The applications of the logarithmic matching have been successfully tried in several cases in open-channel flows, coastal hydrodynamics and sediment transport such as: 1) the inverse problem of Manning equation in rectangular open-channels, 2) the connection of different laws in computational hydraulics, 3) the solution of linear wave dispersion equation, 4) criterion of wave breaking, 5) wave-current turbulence model, 6) sediment settling velocity, 7) velocity profiles of sediment-laden flows, and 8) sediment transport capacity. All these applications agree very well with numerical solutions or experimental data. Besides, it is pointed out that there are several other cases where the logarithmic matching has potential applications.

Original languageFrench
Pages (from-to)555-565
Number of pages11
JournalJournal of Hydraulic Research
Volume40
Issue number5
DOIs
StatePublished - Jan 1 2002

Fingerprint

Sediment transport
sediment transport
Hydraulics
hydraulics
wave dispersion
open channel flow
settling velocity
wave breaking
Sediments
inverse problem
velocity profile
sediment
Open channel flow
power law
turbulence
hydrodynamics
Turbulence models
Inverse problems
Hydrodynamics
Composite materials

Keywords

  • Asymptotic matching
  • Computational hydraulics
  • Linear wave
  • Logarithmic law
  • Power law
  • Sediment settling velocity
  • Sediment transport
  • Velocity profiles
  • Wave breaking
  • Wave-current turbulence

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Water Science and Technology

Cite this

Accordement logarithmique et applications en hydraulique numérique et en sédimentation. / Guo, Junke.

In: Journal of Hydraulic Research, Vol. 40, No. 5, 01.01.2002, p. 555-565.

Research output: Contribution to journalArticle

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