Model:CrevasseFlow: Difference between revisions
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{{Model identity | |||
|Model type=Tool | |||
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|ModelDomain=Terrestrial | |||
|Spatial dimensions=1D | |||
|Spatialscale=Landscape-Scale | |||
|One-line model description=The module calculates crevasse splay morphology and water discharge outflow of a crevasse splay. | |||
|Extended model description=The module is designed to calculate morphological changes and water discharge outflow of a crevasse splay that is triggered by a preset flood event and evolves afterwards. The inputs for "mainCS.m" should be daily water discharge and sediment flux series of the trunk channel upstream the crevasse splay. The outputs will be daily series for the cross-sectional parameters of the crevasse splay, and daily water discharge series of the trunk channel downstream the crevasse splay. One limitation of the present version is it only calculates the expanding and healing of a crevasse splay, while ignores the possible morphological change (demise or revival) of the trunk channel downstream the crevasse splay. Another limitation is the codes are originally written for the Lower Yellow River(a suspended load dominated river) for the purpose of calculating sediment budget in the Lower Yellow over a long timescale, say as long as hundreds years, so the present module can not be applied to other alluvial rivers without modifying those lines related to channel geometry, bankfull discharge and bank erosion(deposition). | |||
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{{Model keywords | |||
|Model keywords=coastal evolution | |||
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{{Modeler information | {{Modeler information | ||
|First name=Yunzhen | |First name=Yunzhen | ||
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|Email address=chenyunzhen1010@gmail.com | |Email address=chenyunzhen1010@gmail.com | ||
|Phone=+8613851402809 | |Phone=+8613851402809 | ||
}} | }} | ||
{{Model technical information | {{Model technical information | ||
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|Start year development=2009 | |Start year development=2009 | ||
|Does model development still take place?=Yes | |Does model development still take place?=Yes | ||
|Model availability=As code | |Model availability=As code | ||
|Source code availability= | |Source code availability=Through CSDMS repository | ||
|Source csdms web address=https://github.com/csdms-contrib/crevasseflow | |||
|Program license type=GPL v2 | |Program license type=GPL v2 | ||
|Typical run time=seconds | |Typical run time=seconds | ||
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When the crevasse splay has not yet cut down to the lowest point max(hs,Zcsb), it can be both widened and deepened. When the crevasse splay has cut down to the lowest point max(hs,Zcsb), it can only be widened or silted vertically. | When the crevasse splay has not yet cut down to the lowest point max(hs,Zcsb), it can be both widened and deepened. When the crevasse splay has cut down to the lowest point max(hs,Zcsb), it can only be widened or silted vertically. | ||
|Describe key physical parameters and equations=Key physical parameters: | |Describe key physical parameters and equations=Key physical parameters: | ||
Q: water discharge upstream crevasse splay; | *Q: water discharge upstream crevasse splay; | ||
Qcs: outflow discharge of crevasse splay; | *Qcs: outflow discharge of crevasse splay; | ||
Qabove: the water discharge above the bottom of crevasse splay; | *Qabove: the water discharge above the bottom of crevasse splay; | ||
rq: the discharge ratio of Qcs and Qabove; | *rq: the discharge ratio of Qcs and Qabove; | ||
hs: channel belt's super-elevation (the elevation of lowest point of channel bed); | *hs: channel belt's super-elevation (the elevation of lowest point of channel bed); | ||
Zcs: bottom elevation of crevasse splay; | *Zcs: bottom elevation of crevasse splay; | ||
Bcs: width of crevasse splay; | *Bcs: width of crevasse splay; | ||
Hcs: flow depth of crevasse splay; | *Hcs: flow depth of crevasse splay; | ||
Vcs: flow velocity of crevasse splay; | *Vcs: flow velocity of crevasse splay; | ||
jcs: slope of the outflow of crevasse splay; | *jcs: slope of the outflow of crevasse splay; | ||
Zcsb: bottom elevation of a crevasse splay whose flow slope is equal to the channel slope j; | *Zcsb: bottom elevation of a crevasse splay whose flow slope is equal to the channel slope j; | ||
Key physical equations: | Key physical equations: | ||
Zcs<=max(hs,Zcsb); | *Zcs<=max(hs,Zcsb); | ||
rq=(1.55-1.45*Fi)*Bcs/wc+0.16*(1-2*Fi), in which Fi is the Fraud number for flow in the trunk channel, wc is width of the trunk channel; | *rq=(1.55-1.45*Fi)*Bcs/wc+0.16*(1-2*Fi), in which Fi is the Fraud number for flow in the trunk channel, wc is width of the trunk channel; | ||
Hcs=(nc*Qcs/sqrt(jcs)/Bcs)^(3/5); | *Hcs=(nc*Qcs/sqrt(jcs)/Bcs)^(3/5); | ||
Vcs=Qcs/Hcs/Bcs; | *Vcs=Qcs/Hcs/Bcs; | ||
dE=M*(Vcs^2-ucre^2)/ucre^2*dt, where M is M-coefficient for erosion rate for crevasse slpay, ucre is critical velocity for erosion, dt is time step; | *dE=M*(Vcs^2-ucre^2)/ucre^2*dt, where M is M-coefficient for erosion rate for crevasse slpay, ucre is critical velocity for erosion, dt is time step; | ||
dD=Sv*(1-Vcs^2/ucrd^2)*ws/0.6*dt, where Sv is volume sediment concentration, ucrd is critical velocity for deposition, ws is settling velocity of suspended load, dt is time step. | *dD=Sv*(1-Vcs^2/ucrd^2)*ws/0.6*dt, where Sv is volume sediment concentration, ucrd is critical velocity for deposition, ws is settling velocity of suspended load, dt is time step. | ||
|Describe length scale and resolution constraints=length scale: meters | |Describe length scale and resolution constraints=length scale: meters | ||
resolution constraint: centimeter | resolution constraint: centimeter | ||
|Describe time scale and resolution constraints=time scale: decades | |Describe time scale and resolution constraints=time scale: decades | ||
resolution constraints: day | resolution constraints: day | ||
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{{Model testing | {{Model testing | ||
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Qs(kg/s): daily sediment flux series, 365 by 1 matrix | Qs(kg/s): daily sediment flux series, 365 by 1 matrix | ||
The trigger flood event is set at the 232th day | The trigger flood event is set at the 232th day | ||
|Model test data=Testdata.rar, | |||
|Model test data=Testdata.rar, | |||
|Describe ideal data for testing=As a test, you can use the attached test data Q and Qs, and run | |Describe ideal data for testing=As a test, you can use the attached test data Q and Qs, and run | ||
{Qd,Delta_hcs,Bcs,Delta_hcsd,Bcsd,Qout,Qcs,Zcs,Hcs,Vcs}=mainCS(Q,Qs,365,232,1,2,965,2.3,4795,0.009,0.03,1.377e-4,-2,0.0005,0.004,1.5,0.7,1800,2.5e-4,25,4.5e-4) | {Qd,Delta_hcs,Bcs,Delta_hcsd,Bcsd,Qout,Qcs,Zcs,Hcs,Vcs}=mainCS(Q,Qs,365,232,1,2,965,2.3,4795,0.009,0.03,1.377e-4,-2,0.0005,0.004,1.5,0.7,1800,2.5e-4,25,4.5e-4) | ||
}} | }} | ||
{{Users groups model | {{Users groups model | ||
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{{Additional comments model}} | {{Additional comments model}} | ||
{{CSDMS staff part | |||
|OpenMI compliant=No but possible | |||
|IRF interface=No but possible | |||
|CMT component=No but possible | |||
|CCA component=No but possible | |||
}} | |||
{{DOI information | |||
|DOI model=10.1594/IEDA/100105 | |||
|DOI assigned to model version=0.0.1 | |||
|DOI-year assigned to model version=2011 | |||
|DOI-filelink=https://csdms.colorado.edu/pub/models/doi-source-code/crevasseflow-10.1594.IEDA.100105-0.0.1.tar.gz | |||
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<!-- PLEASE USE THE "EDIT WITH FORM" BUTTON TO EDIT ABOVE CONTENTS; CONTINUE TO EDIT BELOW THIS LINE --> | <!-- PLEASE USE THE "EDIT WITH FORM" BUTTON TO EDIT ABOVE CONTENTS; CONTINUE TO EDIT BELOW THIS LINE --> | ||
==Introduction== | ==Introduction== | ||
== History == | == History == | ||
== | == References == | ||
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== Issues == | == Issues == | ||
== Help == | == Help == | ||
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== Input Files == | == Input Files == | ||
== Output Files == | == Output Files == | ||
Latest revision as of 20:15, 16 September 2020
CrevasseFlow
Metadata
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Introduction
History
References
Nr. of publications: | 2 |
Total citations: | 0 |
h-index: | --"--" is not a number. |
m-quotient: | 0 |
Featured publication(s) | Year | Model described | Type of Reference | Citations |
---|---|---|---|---|
Chen, Y.; Overeem, I.; Syvitski, J.P.M.; Gao, S.; Kettner, A.J.; 2011. Controls of levee breaches on the Lower Yellow River during the years 1550-1855.. RCEM Publ., , 617-633. (View/edit entry) | 2011 | CrevasseFlow |
Model overview | 0 |
Chen, Y.; 2011. CrevasseFlow, version 0.0.1.. , , https://csdms.colorado.edu/pub/models/doi-source-code/crevasseflow-10.1594.IEDA.100105-0.0.1.tar.gz. 10.1594/IEDA/100105 (View/edit entry) | 2011 | CrevasseFlow |
Source code ref. | 0 |
See more publications of CrevasseFlow |