FluidMud
Introduction
History
Papers
FluidMud Questionnaire
Contact Information
| Model: | Fluidmud |
| Contact person: | Tian-Jian Hsu |
| Institute: | University of Delaware |
| City: | Newark, DE |
| Country: | USA |
| Email: | thsu@udel.edu |
| 2nd person involved: | -- |
| 3rd person involved: | -- |
Model description
| Model type: | Single model for the coastal domain. |
| Description: | This is a 1DV wave-phase resolving numerical model for fluid mud transport based on mixture theory with boundary layer approximation. The model incorporates turbulence-sediment interaction, gravity-driven flow, mud rheology, bed erodibility and the dynamics of floc break-up and aggregation. |
Technical information
| Supported platforms: | Linux, Windows |
| Programming language: | Fortran77 |
| Model was developed started from: | 2005 and development still takes place |
| To what degree will the model become available: | As code |
| Current license type: | -- |
| Memory requirements: | ~2MB |
| Typical run time: | Few hours |
Input / Output description
| Input parameters: | Measured or artificially generated wave and current forcing. Floc diameter, density. Downslope gravity. Vertical grid mesh. Erodibility. Parameters for Bingham rheology. |
| Input format: | ASCII |
| Output parameters: | Major quantities: mud floc concentration, flow velocity in longshelf and cross-shelf direction. Other quantities: TKE, turbulent dissipation rate, floc size (if floc dynamics turn on), bottom stress. |
| Output format: | ASCII |
| Post-processing software (if needed): | Yes, Typical Matlab or Excell plotting |
| Visualization software (if needed): | Yes, Matlab |
Process description
| Processes represented by model: | wave-current boundary layer and fluid mud transport. dilute suspension. wave-supported gravity-driven mudflow. turbulence modulation due to sediment. tidal-driven fluid mud transport. Floc dynamics. Rheology. |
| Key physical parameters & equations: | mixture equations (derived from two-phase theory with fine sediment assumption). k-epsilon closure derived from two-phase theory. Bingham rheology. Floc property is based on fractal structure. Bottom boundary condition for mud is based on type I erosion. |
| Length scale & resolution constraints: | Wave-current BL, lengthscale ~1 m nearbed, grid size ~1mm; Tidal BL: lengthscale 10 m, grid size 1cm |
| Time scale & resolution constraints: | Wave-current BL: timescale ~10 min; time step ~0.01 sec; Tidal BL: timescale days and time step 10 s |
| Numerical limitations and issues : | -- |
Testing
| Available calibration data sets: | AMASSED; STRATAFORM; EUROSTRATAFORM |
| Available test data sets: | AMASSED; STRATAFORM; EUROSTRATAFORM |
| Ideal data for testing: | -- |
User groups
| Currently or plans for collaborating with: | yes |
Documentation
| Key papers of the model: | Hsu, Traykovski, and Kineke, 2007. J. Geophys. Res., 112, C04011. Other manuscript in preparation |
| Is there a manual available: | no |
| Model website if any: | -- |
Additional comments
| Comments: | -- |
