Model:RASCAL: Difference between revisions
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|Model availability=As code | |Model availability=As code | ||
|Source code availability=Through owner | |Source code availability=Through owner | ||
|Program license type= | |Program license type=GPL v2 | ||
|OpenMI compliant=No but possible | |OpenMI compliant=No but possible | ||
|CCA component=No but possible | |CCA component=No but possible | ||
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|Describe length scale and resolution constraints=Code has been most commonly run for 10x5 m cells (with the long axis parallel to flow) and domain size of 1.27 x 1.86 km. Other scales are possible, but adding additional cells will slow down processing. This model is only designed to simulate mean flows; resolution of fine turbulence structure is not possible with the code. | |Describe length scale and resolution constraints=Code has been most commonly run for 10x5 m cells (with the long axis parallel to flow) and domain size of 1.27 x 1.86 km. Other scales are possible, but adding additional cells will slow down processing. This model is only designed to simulate mean flows; resolution of fine turbulence structure is not possible with the code. | ||
|Describe time scale and resolution constraints=Code has been most commonly run at 1 year time steps for up to 6000 years. Time steps are constrained by rates of evolution of topography due to episodic sediment transport events and peat accretion and how quickly those processes affect the flow field. In the situation for which the model was developed, sediment accumulates at a mean rate of 1 mm/yr. | |Describe time scale and resolution constraints=Code has been most commonly run at 1 year time steps for up to 6000 years. Time steps are constrained by rates of evolution of topography due to episodic sediment transport events and peat accretion and how quickly those processes affect the flow field. In the situation for which the model was developed, sediment accumulates at a mean rate of 1 mm/yr. | ||
|Describe any numerical limitations and issues=The model was designed for laminar to transitional flows, up to 10 cm/s. Under these conditions, the flow velocity solution is approximate but is realistic and stable. | |Describe any numerical limitations and issues=The model was designed for laminar to transitional flows, up to 10 cm/s. Under these conditions, the flow velocity solution is approximate but is realistic and stable. | ||
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{{Model testing | {{Model testing | ||
|Describe available test data sets=Flow velocities measured under current conditions in the Everglades in ridge (high-flow-resistance) and slough (low-flow-resistance) vegetation communities. This is very limited validation, as it only tests simulated velocities at the low end of the range of velocities the model is capable of simulating. Results are shown in Larsen and Harvey, Geomorphology, 2010, Fig. 4. | |Describe available test data sets=Flow velocities measured under current conditions in the Everglades in ridge (high-flow-resistance) and slough (low-flow-resistance) vegetation communities. This is very limited validation, as it only tests simulated velocities at the low end of the range of velocities the model is capable of simulating. Results are shown in Larsen and Harvey, Geomorphology, 2010, Fig. 4. | ||
|Describe ideal data for testing=More aspects of the model will be tested in the Everglades as part of the upcoming Decompartmentalization Physical Model, a series of experimental flow releases that will elevate water-surface slope and flow velocities and likely entrain sediment. Coinciding measurements of flow velocities and sediment transport characteristics will be made within different vegetation communities as part of the experiment. | |Describe ideal data for testing=More aspects of the model will be tested in the Everglades as part of the upcoming Decompartmentalization Physical Model, a series of experimental flow releases that will elevate water-surface slope and flow velocities and likely entrain sediment. Coinciding measurements of flow velocities and sediment transport characteristics will be made within different vegetation communities as part of the experiment. | ||
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{{Users groups model | {{Users groups model |
Revision as of 13:57, 7 May 2010
Contact
Name | Laurel Larsen |
Type of contact | Model developer |
Institute / Organization | USGS |
Postal address 1 | 12201 Sunrise Valley Drive |
Postal address 2 | Mailstop 430 |
Town / City | Reston |
Postal code | 20192 |
State | Virginia |
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 | lglarsen@usgs.gov |
Phone | 703-648-5891 |
Fax | 703-648-5484 |
RASCAL
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