***Introductory Information***
Title: Wood-induced backwater model for lowland streams
Included files:
- backwater.html:
is the model, which can run in the internet browser Google Chrome.
- konva.min.js; KonvaGraph.js; math.min.js; quicksettings.min.js:
are supporting files, which support the performance of the model.
- RiverRect1.pars; RiverRectWood1.pars; RiverRectWood2.pars; RiverRectWood3.pars:
are different cross sectional settings, which serve as example for possible settings of the model. The cross sectional settings can be copied, changed and processed both in the model and outside the model.
Contact information:
- Tjitske Geertsema: tjitske.geertsema@wur.nl
- Paul Torfs: paul.torfs@wur.nl
- Ryan Teuling: ryan.teuling@wur.nl
***Model specific information***
- RiverRect1.pars; RiverRectWood1.pars; RiverRectWood2.pars; RiverRectWood3.pars:
Needs the following information:
numpoints scalar
y z z_wood
...
y z z_wood
n_without number
n_wood number
So*1000 number
Qriver number
xwoodleft number
xwoordirght number
The information entails:
Number of points
The coordinates of the cross section geometry; y-coordinates in m, z-coordinates in m and of the height of the wood at the corresponding y-coordinates; z_wood-coordinates in m.
(the repetition in vertical direction is equal to the number of points)
Manning’s coefficient in s m^(1/3), which corresponds to the area without wood
Manning’s coefficient in s m^(1/3), which corresponds to the area containing wood
The bed slope in m / km
Discharge of the river in m^(3) s^(-1)
The x-coordinate at the start of the wood patch in m.
The x-coordinate at the end of the wood patch in m.
- backwater.html:
Shows 5 control panels:
- Controls (double click to open); provides the possibility to save and/or load previous cross sectional geometries
o re(set) current geometric scales to default settings. The current geometric settings cannot be adjusted after clicking this button.
o saves current geometric settings to default setting.
o saves current geometric settings to file to use the current geometric settings latter. The file name and location should be given in the pop-up screen.
o load previous saved default settings from file. In the pop-up screen, the location of the previous saved files should be given.
- Cross section; enables the editing of the cross section both for the channel geometry as the wood geometry
o xmax; gives the maximum axis in meters along the width of the cross section
o ymax; gives the maximum axis in meters along the height of the cross section
o with wood; enables the adding of wood to the cross section
o move bottom; enables to change the cross sectional bottom
o move wood; enables to change the wood in the cross section
o add point (dblclick); enables to add more cross sectional points by double clicking in the green circle.
o rm point (dblclick); enables to remove cross sectional points by double clicking in the red circle.
- Geometrical quantities: enables to plot the geometrical quantities
o A without: shows the cross section area in m^(2) without wood in the river as function of the height of the cross section (d)
o A with: shows the cross section area in m^(2) with wood in the river as function of the height of the cross section (d)
o A both: shows both the cross section area in m^(2) with wood and without in the river as function of the height of the cross section (d)
o B without: shows the width in m without wood in the river as function of the height of the cross section (d)
o B with: shows the width in m with wood in the river as function of the height of the cross section (d)
o B both: shows both the width in m with and without wood in the river as function of the height of the cross section (d)
o P without: shows the wetted perimeter in m without wood in the river as function of the height of the cross section (d)
o P with: shows the wetted perimeter in m with wood in the river as function of the height of the cross section (d)
o P both: shows both the perimeter in m with wood and without in the river as function of the height of the cross section (d)
o R without: shows the hydraulic radius in m without wood in the river as function of the height of the cross section (d)
o R with: shows the hydraulic radius in m with wood in the river as function of the height of the cross section (d)
o R both: shows both the hydraulic radius in m with wood and without in the river as function of the height of the cross section (d)
o P wood + P pure wood: shows the wetted perimeter in m with wood in the river and the wetted perimeter in m of the area covered with wood in the river as function of the height of the cross section (d)
o PfracWood: shows the fraction of wood in the wetted perimeter as function of the height of the cross section (d)
o add sampler; enables to add a sampler to study the numbers more exact
- Equilibrium quantities; gives the Manning’s coefficients and the bed slope and enables to plot the equilibrium quantities
o n without; gives the Manning’s coefficient in s m^(1/3), which corresponds to the area without wood
o n with; gives the Manning’s coefficient in s m^(1/3), which corresponds to the area without wood
o S0*1000; gives the bed slope in m / km
o Q without: shows the river discharge in m^(3) s^(-1) without wood in the river as function of the height of the cross section (d)
o Q with: shows the river discharge in m^(3) s^(-1) with wood in the river as function of the height of the cross section (d)
o Q both: shows the river discharge in m^(3) s^(-1) with and without wood in the river as function of the height of the cross section (d)
o u without: shows the flow velocity in m s^(-1) without wood in the river as function of the height of the cross section (d)
o u with: shows the flow velocity in m s^(-1) with wood in the river as function of the height of the cross section (d)
o u both: shows the flow velocity in m s^(-1) with wood in the river as function of the height of the cross section (d)
o Fr without: shows the Froude number without wood in the river as function of the height of the cross section (d)
o Fr with: shows the Froude number with wood in the river as function of the height of the cross section (d)
o Fr both: shows the Froude number with and without wood in the river as function of the height of the cross section (d)
o add sampler; enables to add a sampler to study the numbers more exact
- Backwater; gives the length of the studied area, the river discharge and the wood patch length
o length: gives the length of the studied river reach in meters
o Q river: gives the river discharge in m^(3) s^(-1)
o wood x left: The x-coordinate at the start of the wood patch in m.
o wood x right: The x-coordinate at the end of the wood patch in m and should always be larger than the wood x left.
o add sampler; enables to add a sampler to study the numbers more exact
- Bottom graph:
o The brown line; indicates the bottom of the channel
o The blue line; indicates the water level
o The red line; indicates the equilibrium level
o The two vertical lines; indicate the length of the wood patch