DYRIM (Dynamic River Model)

DYRIM is a one‐dimensional Lagrangian river model for the simulation of flow that computes velocity, depth and position of the moving water parcels in river channel and floodplain and the lateral exchange between them.

one‐dimensionalLagrangianrivervelocitydepthpositionriver channelfloodplainlateral

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Contributor(s)

Initial contribute: 2019-12-30

Authorship

:  
Centre for Water Research, The University of Western Australia
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Classification(s)

Application-focused categoriesNatural-perspectiveLand regions

Detailed Description

English {{currentDetailLanguage}} English

Quoted from: Devkota, Bishnu H., and Jörg Imberger. "Lagrangian modeling of the dynamics of river and floodplain flow." Journal of Hydraulic Engineering 135, no. 10 (2009): 771-782. 

A new Lagrangian, dynamic river model is described. The model solves the coupled one-dimensional hydrostatic flow equations separately in a main river channel and in adjacent floodplains using a two-stage predictor-corrector scheme. The lateral interaction between the main channel and floodplains, due to both advective exchange arising from lateral pressure gradients and turbulent exchange due to lateral shear, is included. The Lagrangian moving grid eliminates numerical diffusion and oscillations commonly experienced in Eulerian models, and can accurately simulate wave propagation and nonlinear steepening until wave breaking. The Lagrangian moving grid is dynamically adaptive, providing variable resolution as the moving fluid parcel’s length changes, either because the cross-sectional flow area or the flow depth changes as the wave moves down a channel of variable cross section. The model also allows flows over dry beds and moving boundaries to be handled efficiently. The model was successfully validated for a flow induced by a simple wave in a prismatic channel, flood waves in laboratory compound channels, and flow in a natural river.

模型元数据

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Bishnu H. Devkota (2019). DYRIM (Dynamic River Model), Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/65e4e924-0fe1-4ff7-abad-6b92e807ec63
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History

Last modifier
zhangshuo
Last modify time
2021-01-07
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Contributor(s)

Initial contribute : 2019-12-30

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Authorship

:  
Centre for Water Research, The University of Western Australia
Is authorship not correct? Feed back

History

Last modifier
zhangshuo
Last modify time
2021-01-07
Modify times

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