Publications:Newsletters/Apr2012

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Issue 29, April 2012

In this Newsletter:

Thanks to NAP, with help from NAB and NAN, for hosting our 13th Annual CIRP workshop!

The 13th Annual (38th sequential) Coastal Inlets Research Program (CIRP) workshop was held March 6-8 at the U.S. Army Engineer Philadelphia District, with attendance from Baltimore, Philadelphia, Charleston, Chicago, Galveston, and Norfolk Districts, the North Atlantic Division, and Stevens Institute of Technology. For the first time, the workshop was simultaneously presented via webinar to an additional 11 attendees from CHL, HDR, Inc., Roberge Associates, Applied Technology and Management, Galveston District, and the Narvik University College in Norway. The CIRP instructors included Tanya Beck, Mitch Brown, Ashley Frey, Honghai Li, Lihwa Lin, and Alex Sanchez and covered beginning Coastal Modeling System (CMS) and Surface-water Modeling System (SMS); the regional beach and inlet shoal evolution model GenCade, which is also in the SMS; and Advanced CMS. The CMS and GenCade are being advanced by the CIRP and Regional Sediment Management Programs to provide tools to evaluate engineering alternatives at inlets and adjacent beaches within a regional sediment management framework.

POC: Julie Rosati, julie.d.rosati@usace.army.mil


Did you miss the workshop? Announcing CIRP Webinar series.

Three webinars are planned for the summer of FY12:

  1. Coastal Modeling System (CMS) Basics (Jun 11-15)
  2. Advanced Topics with the CMS (June 18-22)
  3. GenCade (11-13 September)

All webinars will be from 1-3 pm CDT each day. Please register on the CIRP website (see link below) and we will send more information as these dates approach.

POC: Mitch Brown (Webinar #1), mitchell.e.brown@usace.army.mil
POC: Alex Sanchez (Webinar #2), alejandro.sanchez@usace.army.mil
POC: Ashley Frey (Webinar #3), ashley.e.frey@usace.army.mil
URL: http://cirp.usace.army.mil/webinars


MixSed being implemented into CMS.

A collaborative effort by Drs. Earl Hayter (DOER) and Zeki Demirbilek (CIRP and DOER) is focused on expansion and enhancement of sediment transport modeling capabilities of the Coastal Modeling System (CMS). The planned improvements to CMS technology will allow CIRP to address sediment modeling and management (placement) needs of the USACE navigation O&M business line. Mixed (multiple-grain) sediment, cohesive sediment, and mud transport modeling capabilities that have been developed by DOER are being incorporated into the CMS. These new sediment modeling capabilities have been implemented in the explicit and implicit CMS-Flow models. Testing is in progress with laboratory and field data to verify and validate these new features of CMS. With such advanced new features of CMS, Districts will be able to evaluate and understand complex wave, non-stratified flow, and sediment processes and quantify their effects on coastal navigation, inlet, and harbor projects.

POC: Earl Hayter, earl.hayter@usace.army.mil
POC: Zeki Demirbilek, zeki.demirbilek@usace.army.mil


Pillar Point Harbor Modeling Phase II Study, CA.

The USACE District, San Francisco, and CIRP are presently conducting the coastal erosion numerical modeling Phase II study at Pillar Point Harbor, Half Moon Bay, CA. Following the completion of Phase I study in 2011 that included field data collection and numerical modeling of beach nourishment alternatives under combined hydrodynamic and wave conditions, the Phase II study is aimed to simulate the 50-year sea level rise conditions with and without Harbor scenarios using the National Research Council (NRC) Curves I and III. The model results will provide the technical information necessary for the Pillar Harbor and Half Moon Bay Stakeholders to better understand the existing coastal conditions and to look for solutions.

POC: (ERDC) Lihwa Lin, lihwa.lin@usace.army.mil
POC: (SPN) Lisa Andes, lisa.c.andes@usace.army.mil


Comparison of CIRP Models – a new brochure!

Have you ever been confused about what the different models do? Or do you have problems explaining to your colleagues and partners why certain tools are required? CIRP has compared all of the models we support in a colorful brochure that you can find on our website: http://cirp.usace.army.mil/meetings/RARG2012/CIRP_Brochure-April2012.pdf. The brochure compares the advantages/disadvantages, time scales and platforms, and provides POCs for Bouss-1D/2D, CMS-Flow, CMS-Wave, GenCade, and PTM. Please download and share!

POCs: CIRP Team

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Model

What does it do?

What are typical time scales and platforms?

Where has it been validated?

What are advantages?

What are the limitations?

Where do I find info?

Who is the main POC?

Bouss-1D/2D

Wave model for navigation, port/harbor, flood & risk assessment; decision-support

 

       ·   High-fidelity, advanced, most accurate model for
short and long waves

·   1-10 km regions

·   Wave-structure-ship interactions, ship wake

·   Surf & swash zone waves (rip currents, runup/over-

topping, infra-gravity & tsunamis)

·   20 wave conditions run with rectangular grids in projects

·   Can be used with one grid or grids for each project alternative

·   Runs on PC, Linux, and HPCs (supercomputers)

·   Hours to a week

·   15+ sites including coastal inlets, harbors, ports, flood control structures, and reefs

·   Physics & process based; no empiricism

·   Only DoD model for nonlinear shallow-water waves

·   Ideal for ports/ harbors/marinas, & design/rehab of infrastructure

·   Need expertise to run

·   Time-consuming

·   Not necessary for all coastal problems

·   No winds

·   No unstructured-grid capability

·   CIRP, NavSys, FDR, SWIMS websites

·   Knowledge Hub (KH)

Dr. Zeki Demirbilek

CMS-Flow

2D, depth-integrated

·   Tidal flow, wave-induced currents, sediment transport, and morphology change

·   Integrated with CMS-Wave

·   Runs on multi-core desktop machines

·   Typical simulation lengths of several months to years

·   20+ sites including coastal inlets, estuaries and beaches

·   Integrated system

·   Robust and fast

·   Flexible Cartesian meshes

·   SMS interface

·   User-friendly

·   Depth-integrated

·   No boundary fitting capability

·   No swash zone or cross-shore sed transport (yet)

·   CIRP website

·   KH

Alex Sanchez

CMS-Wave

2D, depth-integrated

·   Full-plane spectral wave generation-transformation

·   Integrated with CMS-Flow

·   Designed for inlet applications

·   Runs on PC in SMS, DOS

·   Typical simulation lengths of several months to years

·   20+ sites: US East and West coasts, Gulf of Mexico

·   5+ laboratory and theoretical studies

·   Efficient SMS interface

·   Theoretical-based wave diffraction, reflection

·   Includes structure-wave interactions

·   Empirical wave breaking formula

·   Structured grid

Dr. Lihwa Lin

GenCade

1D regional beach and inlet shoal evolution model

·   Can represent coastal structures, beach fills, dredging and placement

·   Includes Inlet Reservoir Model* to account for inlet shoal and channel evolution

*Also available in PC version

·   Runs on PC in SMS

·   Years to multiple decades

·   Wave conditions representing 1-10 years

·   Basic V&V completed

·   5+ sites: Onslow Bay, NC; Sargent Beach, TX;

St. Johns County, FL;

Point Lookout, NY

·   User-friendly; easy to learn

·   Conceptual model = fast grid creation and set up

·   Integrates cumulative projects

·   Fast

·   Empirically-based sand transport

·   Explicit solution scheme (solution stability)

·   Constrained by standard 1-line model assumptions

·   CIRP website

·   KH

Ashley Frey

PTM

Particle Tracking Model,

for 2D/3D hydro models

·   Joint DOER-CIRP product

·   Coupled to CMS by CIRP

·   Predicts  particle transport pathways and fate

·   SMS based interface

·   Accepts input from CMS and other hydro and wave models

·   Runs on desktop PCs and HPCs (super-computers)

·   Seconds to hours

·   Basic V&V completed

·   Detailed V&V  studies in progress

·   Fast and efficient

·   Flexible; not tied to any hydro or wave model

·   SMS interface connects to flow and wave models

·   Not designed for sediment transport calcs

·   Some empirical formulas

·   Too many particles can slow runtimes

·   CIRP, DOER websites

·   KH

Drs. Tahirih Lackey (DOER), Honghai Li (CIRP), Zeki Demirbilek (CIRP & DOER)

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2012 Research Area Review Group (RARG) Meeting.

In case you were unable to attend the 2012 RARG Meeting in Vicksburg, MS, we have posted CIRP’s powerpoint, a powerpoint discussing future Statements of Need, and posters on our website for you to view and download as you wish (http://cirp.usace.army.mil/meetings/RARG2012). Please take a look at these and let us know if you have any thoughts to share with us. Remember, you can always submit a Statement of Need for future R&D on the Navigation Gateway, http://operations.usace.army.mil/navigation.cfm, which we’ll discuss at next year’s RARG.

POCs: Julie Rosati and CIRP Team


Julie D. Rosati

Engineer Research & Development Center
3909 Halls Ferry Road, Coastal & Hydraulics Laboratory
Vicksburg, MS 39180

251-635-9519

julie.d.rosati@usace.army.mil

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