Model:TopoFlow-Channels-Diffusive Wave: Difference between revisions
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|Describe key physical parameters and equations=****** THERE SEEMS TO BE A BUG IN THE FORM HERE ******* | |Describe key physical parameters and equations=****** THERE SEEMS TO BE A BUG IN THE FORM HERE ******* | ||
Main equations used by this component: | Main equations used by this component: | ||
ΔV(i,t)= Δt * | ΔV(i,t)= Δt * ( R(i,t) Δx Δy - Q(i,t) + Σk Q(k,t) ) = change in water volume (m^3), mass conservation | ||
d = { | d = {( w^2 + 4 tan(θ) V / L)^1/2 - w } / (2 tan(θ)) = mean water depth in channel segment (m) (if θ > 0) | ||
d = V / | d = V / (w * L) = mean water depth in channel segment (m) (if θ = 0) | ||
Q = v * Aw = discharge of water | Q = v * Aw = discharge of water (m^3 / s) | ||
v = n^(-1) * Rh^(2/3) * S^(1/2) = section-averaged velocity | v = n^(-1) * Rh^(2/3) * S^(1/2) = section-averaged velocity (m / s), Manning's formula | ||
v = ( g * Rh * S)^(1/2) * LN( a * d / z0) / κ = section-averaged velocity | v = ( g * Rh * S)^(1/2) * LN( a * d / z0) / κ = section-averaged velocity (m / s), Law of the Wall | ||
Rh = Aw / Pw = hydraulic radius | Rh = Aw / Pw = hydraulic radius (m) | ||
Aw = d * | Aw = d * (w + (d * tan(θ))) = wetted cross-sectional area of a trapezoid (m^2) | ||
Pw = w + | Pw = w + (2 * d / cos(θ)) = wetted perimeter of a trapezoid (m) | ||
Vw = d^2 * | Vw = d^2 * ( L * tan(θ) ) + d * (L * w) = wetted volume of a trapezoidal channel (m) | ||
(Source: TopoFlow HTML Help System) | (Source: TopoFlow HTML Help System) | ||
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{{Additional comments model | {{Additional comments model | ||
|Comments= | |Comments= This component was developed as part of the TopoFlow hydrologic model, which was originally written in IDL and had a point-and-click GUI. For more information on TopoFlow, please goto: http://csdms.colorado.edu/wiki/Model:TopoFlow. | ||
When used from within the CSDMS Modeling Tool (CMT), this component has "config" button which launches a graphical user interface (GUI) for changing input parameters. The GUI is a tabbed dialog with a Help button at the bottom that displays HTML help in a browser window. | |||
This component also has a configuration (CFG) file, with a name of the form: <case_prefix>_channels_diff_wave.cfg. This file can be edited with a text editor. | |||
The Numerical Python module (numpy) is used for fast, array-based processing. | |||
This model has an OpenMI-style interface, similar to OpenMI 2.0. Part of this interface is inherited from "CSDMS_base.py". | |||
}} | }} | ||
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Revision as of 11:35, 16 February 2010
Contact
Name | Scott Peckham |
Type of contact | Model developer |
Institute / Organization | CSDMS, INSTAAR, University of Colorado |
Postal address 1 | 1560 30th street |
Postal address 2 | |
Town / City | Boulder |
Postal code | 80305 |
State | Colorado |
Country | USA"USA" is not in the list (Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Australia, Austria, ...) of allowed values for the "Country" property. |
Email address | Scott.Peckham@colorado.edu |
Phone | 303-492-6752 |
Fax |
TopoFlow-Channels-Diffusive Wave
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