DOI: 10.5194/hess-20-3799-2016
Scopus记录号: 2-s2.0-84987959451
论文题名: Determinants of modelling choices for 1-D free-surface flow and morphodynamics in hydrology and hydraulics: A review
作者: Cheviron B ; , Moussa R
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2016
卷: 20, 期: 9 起始页码: 3799
结束页码: 3830
语种: 英语
Scopus关键词: Hydraulics
; Hydrology
; Plasma interactions
; Reynolds number
; Dimensionless number
; Flow charac-teristics
; Free-surface flow
; Hydrology and hydraulics
; Model refinement
; Modelling strategies
; Reynolds - Averaged Navier-Stokes
; Spatio-temporal scale
; Navier Stokes equations
; free surface flow
; Froude number
; hydraulics
; hydrological modeling
; literature review
; morphodynamics
; Navier-Stokes equations
; Reynolds number
; spatiotemporal analysis
; typology
英文摘要: This review paper investigates the determinants of modelling choices, for numerous applications of 1-D free-surface flow and morphodynamic equations in hydrology and hydraulics, across multiple spatiotemporal scales. We aim to characterize each case study by its signature composed of model refinement (Navier-Stokes: NS; Reynolds-averaged Navier-Stokes: RANS; Saint-Venant: SV; or approximations to Saint-Venant: ASV), spatiotemporal scales and subscales (domain length: L from 1ĝ€cm to 1000ĝ€km; temporal scale: T from 1ĝ€s to 1 year; flow depth: H from 1ĝ€mm to 10ĝ€m; spatial step for modelling: δ L ; temporal step: δ T ), flow typology (Overland: O; High gradient: Hg; Bedforms: B; Fluvial: F), and dimensionless numbers (dimensionless time period T ∗, Reynolds number Re , Froude number Fr , slope S , inundation ratio z , Shields number θ ). The determinants of modelling choices are therefore sought in the interplay between flow characteristics and cross-scale and scale-independent views. The influence of spatiotemporal scales on modelling choices is first quantified through the expected correlation between increasing scales and decreasing model refinements (though modelling objectives also show through the chosen spatial and temporal subscales). Then flow typology appears a secondary but important determinant in the choice of model refinement. This finding is confirmed by the discriminating values of several dimensionless numbers, which prove preferential associations between model refinements and flow typologies. This review is intended to help modellers in positioning their choices with respect to the most frequent practices, within a generic, normative procedure possibly enriched by the community for a larger, comprehensive and updated image of modelling strategies. © Author(s) 2016. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78729
Appears in Collections: 气候变化事实与影响
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作者单位: IRSTEA, UMR G-EAU, Gestion de l'EAU, Acteurs et Usages, 361 rue Jean-François Breton, BP 5095, Montpellier Cedex 5, France; INRA, UMR LISAH, Laboratoire d'Etude des Interactions Entre Sol - Agrosysteme - Hydrosysteme, 2 Place Pierre Viala, Montpellier Cedex 1, France
Recommended Citation:
Cheviron B,, Moussa R. Determinants of modelling choices for 1-D free-surface flow and morphodynamics in hydrology and hydraulics: A review[J]. Hydrology and Earth System Sciences,2016-01-01,20(9)