Model:FineSed3D

FineSed3D

Also known as
Model type	Single
Model part of larger framework

Incorporated models or components:

Spatial dimensions	3D
Spatial extent	Grain-Scale
Model domain	Marine, Terrestrial
One-line model description	A turbulence-resolving numerical model for fine sediment transport in bottom boundary layer
Extended model description	A turbulence-resolving numerical model for fine sediment transport in the bottom boundary layer is developed. A simplified Eulerian two-phase flow formulation for the fine sediment transport is adopted. By applying the equilibrium Eulerian approximation, the particle phase velocity is expressed as a vectorial sum of fluid velocity, sediment settling velocity and Stokes number dependent inertia terms. The Boussinesq approximation is applied to simplify the governing equation for the fluid phase. This model utilizes a high accuracy hybrid compact finite difference scheme in the wall-normal direction, and uses the pseudo-spectral scheme in the streamwise and spanwise directions. The model allows a prescribed sediment availability as well as an erosional/depositional bottom boundary condition for sediment concentration. Meanwhile, the model also has the capability to include the particle inertia effect and hindered settling effect for the particle velocity.

Keywords:	Fine Sediment, Turbulence-resolving, Bottom boundary layer,

Name	Zhen Cheng
Type of contact	Model developer
Institute / Organization	Center for Applied Coastal Research, University of Delaware
Postal address 1	259 academy street
Postal address 2
Town / City	Newark
Postal code	19716
State	Delaware
Country	United States
Email address	zcheng@udel.edu
Phone	3024196006
Fax

Supported platforms	Unix, Linux, Mac OS, Windows
Other platform
Programming language	Fortran77
Other program language
Code optimized	Multiple Processors
Multiple processors implemented	Shared memory
Nr of distributed processors
Nr of shared processors	48
Start year development	2012
Does model development still take place?	No
If above answer is no, provide end year model development	2014
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)	Through CSDMS repository
Source web address
Source csdms web address	https://github.com/csdms-contrib/finesed3d
Program license type	CDDL
Program license type other
Memory requirements
Typical run time	one month

Describe input parameters	start time step, number of time steps to run, settling velocity, Reynolds number, see more details in the user manual.
Input format	ASCII
Other input format
Describe output parameters	vel.: fluid velocity, binary format, the I/O format can be found in io.F in the folder \Src. conc.: sediment concentration, binary format, see io.F in the folder \Src for detailed I/O information. press.: fluid dynamic pressure, binary format, see io.F in the folder \Src for detailed I/O information. vel\_p.: difference of sediment velocity from fluid velocity, output if inertia effect or hindered settling effect is considered, binary format, see io.F in the folder \Src for detailed I/O information. DDt.*: material derivative of fluid velocity, output if inertia effect is included, binary format, see io.F in the folder \Src for detailed I/O information. ushear.dat: time series of plane averaged bottom shear velocity, it is output every time step, ASCII format. logfile: log of screen output to monitor the quantities such as CFL number, domain averaged concentration, bottom concentration, etc., ASCII format.
Output format	Binary
Other output format
Pre-processing software needed?	No
Describe pre-processing software
Post-processing software needed?	No
Describe post-processing software
Visualization software needed?	No
If above answer is yes
Other visualization software

Describe processes represented by the model	fine sediment transport in the bottom boundary layer
Describe key physical parameters and equations	Reynolds number, settling velocity, Froude number (or bulk Richardson number), critical shear stress of erosion, Stokes number
Describe length scale and resolution constraints	Domain should be large enough to resolve the bottom boundary layer, meanwhile, the grid resolution should be fine enough to resolve all the essential turbulence scales.
Describe time scale and resolution constraints	time step should be small enough to ensure the CFL criterion.
Describe any numerical limitations and issues	limited to applications to wall-bounded channel domains.

Describe available calibration data sets
Upload calibration data sets if available:
Describe available test data sets	matlab data for ensemble-averaged profiles of sediment concentration (conc), fluid velocity (vel) and turbulent kinetic energy (k) at the flow peak of Case 2;
Upload test data sets if available:	Media:Case2Data.mat
Describe ideal data for testing

Do you have current or future plans for collaborating with other researchers?

Is there a manual available?	Yes
Upload manual if available:	Media:FineSed3D_User_Manual.pdf
Model website if any
Model forum / discussion board

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