Model:TUGS

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TUGS

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Summary Contact Technical specs In/Output Process Testing Other Component info Also known as Model type Single Model part of larger framework Note on status model Date note status model Spatial dimensions 1D Spatial extent Model domain Terrestrial One-line model description Fluvial gravel and sand transport model Extended model description TUGS is a 1D model that simulates the transport of gravel and sand in rivers. The model predicts the responses of a channel to changes made to the environment (e.g., sediment supply, hydrology, and certain artifical changes made to the river). Output of the model include longitudinal profile, sediment flux, and grain size distributions in bedload, channel surface and subsurface. Keywords: river, sediment dynamics, Name Yantao Cui Type of contact Model developer Institute / Organization Stillwater Sciences Postal address 1 2855 Telegraph Ave. Suite 400 Postal address 2 Town / City Berkeley Postal code 94705 State California Country United States Email address yantao@stillwatersci.com Phone 510-848-8098 x120 Fax 510-848-8398 Supported platforms Windows Other platform Can be compiled to other systems Programming language Fortran77, Fortran90 Other program language in Excel for input/output manipulation Code optimized Single Processor Multiple processors implemented Nr of distributed processors Nr of shared processors Start year development 2006 Does model development still take place? No If above answer is no, provide end year model development 2008 Code development status When did you indicate the 'code development status'? Model availability As code, As teaching tool Source code availability (Or provide future intension) Source web address Source csdms web address Program license type Other Program license type other Propritary code Memory requirements Depending on node,number of sizes and number of layers information has to be stored Typical run time Hours to hundredes of years, but typically annual output Describe input parameters describe input parameters: Initial longitudinal profile and estimated surface/subsurface grain size; sediment input, including both rate and grain size distribution, and typically at a long-term-avearged basis; and water discharge, typically daily average discharge. Input format ASCII Other input format A Excel-VBA workbook is available for input data processing and simple error checking Describe output parameters Time variation of longitudinal profile, sediment flux and grain size distributions of bedload, surface and subsurface sediment. Output format ASCII Other output format Output results must be processed with a Excel-VBA workbook Pre-processing software needed? No Describe pre-processing software Post-processing software needed? Yes Describe post-processing software A Excel-VBA workbook is available to extract the output files into various Excel worksheets. Visualization software needed? No If above answer is yes Other visualization software Describe processes represented by the model The two key elements of TUGS model are a surface-based bedload transport equation that allows for calculation of transport rate and grain size distribution of both gravel and sand (Wilcoco and Crowe 2003), and functions that link bedload grain size distributions with surface and subsurface grain size distributions (Hoey and Ferguson 1994; Toro-Escobar et al. 1996; Cui 2007a). Describe key physical parameters and equations See Cui (2007a) for detail: http://dx.doi.org/10.1029/2006WR005330 Describe length scale and resolution constraints Length varies, resolution is on the order of several channel width (i.e., 1D model produces only reach-averaged results). Describe time scale and resolution constraints For typical application in a natural river as a prediction tool, the recommended resolution is annual, although it can be as high as hours for simulation of a specific known event. Describe any numerical limitations and issues TUGS was developed with a fairly low budget, and thus, bugs may still exist. There are, however, no known numerical limitations at this point. Describe available calibration data sets See two papers: Cui (2007a) http://dx.doi.org/10.1029/2006WR005330 Cui (2007b) http://dx.doi.org/10.1002/rra.1012 A manuscript with regard to its application to the Waipaoa River, NZ is currently underway by Basil Gomez and others. Upload calibration data sets if available: Describe available test data sets St. Anthony Falls Laboratory downstream fining experiments (Rebecca Soileau, Chris Paola and Gary Parker) Upload test data sets if available: Describe ideal data for testing Do you have current or future plans for collaborating with other researchers? Collaboration is always welcomed. The developer, however, does not have any funding to cover such activities. So it may take a fairly long time to finish a modeling exercise if it is done in his spare time. Is there a manual available? No Upload manual if available: Model website if any Model forum / discussion board Comments -- This part will be filled out by CSDMS staff OpenMI compliant No but possible BMI compliant No but possible WMT component No but possible PyMT component Is this a data component Can be coupled with:

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