INLET TEST CASE: Difference between revisions
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Table 1. Important model parameters: | Table 1. Important model parameters: | ||
{| border="1" cellspacing="0" cellpadding="5" align="center" | {| border="1" cellspacing="0" cellpadding="5" align="center" | ||
!Model Parameter | !Model Parameter | ||
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|- | |- | ||
|length, width, depth | |length, width, depth | ||
| | |[[Variables#Xsize|Xsize]], [[Variables#Esize|Esize]], [[Variables#hmax|hmax]] | ||
|15000 m, 14000 m, 4.0 m | |15000 m, 14000 m, 4.0 m | ||
|- | |- | ||
|number of grid spacings | |number of grid spacings | ||
| | |[[Variables#Lm|Lm]], [[Variables#Mm|Mm]], [[Variables#N|N]] | ||
|75, 70, 10 | |75, 70, 10 | ||
|- | |- | ||
|bottom Roughness | |bottom Roughness | ||
| | |[[Variables#Zob|Zob]] | ||
|0.015 m | |0.015 m | ||
|- | |- | ||
|time step | |time step | ||
|[[ | |[[Variables#dt|dt]] | ||
|10 s | |10 s | ||
|- | |- | ||
|simulation steps | |simulation steps | ||
| | |[[Variables#ntimes|ntimes]] | ||
|17280 steps (2 days) | |17280 steps (2 days) | ||
|- | |- | ||
|morphology factor | |morphology factor | ||
| | |[[Variables#morph_fac|morph_fac]] | ||
|10 (=20 day scaled simulation) | |10 (=20 day scaled simulation) | ||
|- | |- | ||
|grain size | |grain size | ||
| | |[[Variables#Sd50|Sd50]] | ||
|0.10 mm | |0.10 mm | ||
|- | |- | ||
|settle velocity | |settle velocity | ||
| | |[[Variables#Wsed|Wsed]] | ||
|11.0 mm s<sup>-1</sup> | |11.0 mm s<sup>-1</sup> | ||
|- | |- | ||
|erosion rate | |erosion rate | ||
| | |[[Variables#Erate|Erate]] | ||
|5 x 10<sup>-3</sup> kg m<sup>-2</sup>s<sup>-1</sup> | |5 x 10<sup>-3</sup> kg m<sup>-2</sup>s<sup>-1</sup> | ||
|- | |- | ||
|critical stress | |critical stress | ||
| | |[[Variables#tau_cd|tau_cd]], [[Variables#tau_ce|tau_ce]] | ||
|0.10 Nm<sup>-2</sup> | |0.10 Nm<sup>-2</sup> | ||
|- | |- | ||
|porosity | |porosity | ||
| | |[[Variables#poros|poros]] | ||
|0.50 | |0.50 | ||
|- | |- | ||
|bed thickness | |bed thickness | ||
| | |[[Variables#bed|bed(:, :, :, ithck)]] | ||
|10.0 m | |10.0 m | ||
|- | |- | ||
|northern edge tide | |northern edge tide | ||
| | |A, T<sub>t</sub> | ||
|1.0 m, 12 h | |1.0 m, 12 h | ||
|- | |- | ||
|northern edge wave height | |northern edge wave height | ||
| | |H<sub>sig</sub> | ||
|2 m | |2 m | ||
|- | |- | ||
|northern edge wave period | |northern edge wave period | ||
| | |T | ||
|10 s | |10 s | ||
|- | |- | ||
|northern edge wave direction | |northern edge wave direction | ||
| | |θ | ||
|from 0° (from North) | |from 0° (from North) | ||
|- | |- | ||
|} | |} | ||
Below we provide a brief example of the model output. | Below we provide a brief example of the model output. | ||
Revision as of 20:16, 30 October 2008
This test case couples ROMS and SWAN directly using the Modeling Coupling Toolkit (MCT) library. To run this application the user needs to activate INLET_TEST. It only can be run in distributed-memory (MPI) since the parallel threads are split to run both ROMS and SWAN at the same time. This test illustrates the significance of wave-current coupling. This application and coupling methodology is described in Warner et al. (2008).
This test case models and idealized tidal inlet system. The model domain is a 15x14 km rectangle with a uniform initial depth of 4 m. The model setup parameters are shown in the table below. The domain is separated into two regions: the seaward (top) and back-barrier (bottom) regions. The seaward region is open with radiation conditions on the western, northern and eastern edges. The back-barrier region is enclosed with four walls and is connected to the seaward region through a 2 km wide inlet. The model is forced by a tide and waves. An oscillating water level is imposed on the northern edge with a tidal amplitude of 1 m. Waves are also imposed on the northern edge with a height of 1 m, directed to the south with a period of 10s.
Table 1. Important model parameters:
| Model Parameter | Variable | Value |
|---|---|---|
| length, width, depth | Xsize, Esize, hmax | 15000 m, 14000 m, 4.0 m |
| number of grid spacings | Lm, Mm, N | 75, 70, 10 |
| bottom Roughness | Zob | 0.015 m |
| time step | dt | 10 s |
| simulation steps | ntimes | 17280 steps (2 days) |
| morphology factor | morph_fac | 10 (=20 day scaled simulation) |
| grain size | Sd50 | 0.10 mm |
| settle velocity | Wsed | 11.0 mm s-1 |
| erosion rate | Erate | 5 x 10-3 kg m-2s-1 |
| critical stress | tau_cd, tau_ce | 0.10 Nm-2 |
| porosity | poros | 0.50 |
| bed thickness | bed(:, :, :, ithck) | 10.0 m |
| northern edge tide | A, Tt | 1.0 m, 12 h |
| northern edge wave height | Hsig | 2 m |
| northern edge wave period | T | 10 s |
| northern edge wave direction | θ | from 0° (from North) |
Below we provide a brief example of the model output.
