RMA2

Short Summary	RMA2 is a dynamic two-dimensional depth-averaged finite element hydrodynamic model for computing water surface elevations and horizontal velocity components for subcritical, free-surface flow. It is designed for far-field problems in unstratified water bodies in which vertical accelerations are negligible (hydrostatic) and velocity vectors generally point in the same direction over the entire depth of the water column. RMA2 uses the Reynolds form of the Navier-Stokes equations; eddy viscosity coefficients are used to define turbulence characteristics. RMA2 can simulate wetting and drying and marsh porosity and is therefore suited to computing hydrodynamics in tidal flats and wetlands. RMA2 is one component of the US Army Corps of Engineers TABS-MD System.
Status	The USACE Waterways Experiment Station distributes the model (FORTRAN code) and provides technical support only to USACE and Research Lab users. Other users can obtain the USACE version of the software and technical assistance from EMS-I, or a different version of the model and technical assistance from Resource Management Associates.
Graphical User Interface	The USACE version of the model has been incorporated into EMS-I's Surface Water Modeling System (SMS). SMS provides grid generation capability for pre-processing, and visualization and animation capability for post-processing. SMS is available for Windows 95/NT and Unix operating systems. RMAGEN and RMASIM (developed by Resource Management Associates) aid in creation and editing of finite element grids used in the RMA hydrodynamic and water quality models. RMAPLT allows viewing of simulation results produced by the RMA hydrodynamic and water quality models. RMAGEN/SIM/PLT interfaces are available for Windows 95/NT and Unix operating systems.
Pre-processors	The TABS-MD suite of software includes the grid-generation program GFGEN.
Developer	Resource Management Associates, Suisun, CA; modifications made by the Waterways Experiment Station Coastal and Hydraulics Laboratory (CHL) at the Army Corps of Engineers (USACE).
Contact	USACE WES: tabs@hl.wes.army.mil EMS-I: (801-373-5200), info@ems-i.com Resource Management Associates: (707-864-2950), info@rmanet.com
Users' Manual	For the WES version of the model: Users Guide to RMA2 WES Version 4.5, last modified September, 2000 US Army, Engineer Research and Development Center Waterways Experiment Station Coastal Hydraulics Laboratory
Project Abstracts	Newport Bay, CA | South San Francisco Bay, CA (1) | San Pablo Bay, CA | Schell Slough, CA | South San Francisco Bay, CA (2) | Jacks Fork River, MO

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