Verification of the Hydrodynamic and Sediment Transport Hybrid Modeling System for Cumberland Sound and Kings Bay Navigation Channel, Georgia

• Main Authors: Granat, Mitchell A., Brogdon, Noble J., Cartwright, John T., McAnally, Jr, William H.
• Other Authors: ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS HYDRAULICS LAB
• Format: Text
• Language: English
• Published: 1989
• Subjects: Physical and Dynamic Oceanography; Hydrology; Limnology and Potamology; Fluid Mechanics; *CHANNELS(WATERWAYS); *ESTUARIES; *SEDIMENT TRANSPORT; THREE DIMENSIONAL; NAVIGATION; CHANNEL FLOW; HYDRODYNAMICS; HYDRAULIC MODELS; SEDIMENTATION; GEORGIA; OCEAN TIDES; BAYS; HYBRID SIMULATION; FINITE ELEMENT ANALYSIS; SOUNDS(WATERWAYS); COMPUTER PROGRAMS; MATHEMATICAL MODELS; CUMBERLAND SOUND(GEORGIA); KINGS BAY(GEORGIA); TABS-2 COMPUTER PROGRAM; Cumberland Sound; Kings Bay; Trident
• Online Access: http://www.dtic.mil/docs/citations/ADA211045; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA211045

A hybrid modeling system (coupled physical and numerical models) was developed to investigate the hydrodynamic and sedimentation processes of Cumberland Sound and the interior King's Bay navigation channel. The hybrid modeling procedures and the physical and numerical model verifications are described in detail. The King's Bay physical model was an accurately scaled fixed-bed concrete model of the Cumberland Sound/Kings Bay estuarine system. The physical model provided the means of assessing three-dimensional hydrodynamic characteristics of Cumberland Sound and Kings Bay. It also provided the boundary forcing conditions for the numerical model and an expanded data base for comparison. Verification of the physical model to reproduce pre-Trident channel field measurements collected during November 1982 and transitional channel conditions measured during January 1985 was demonstrated. The other component of the modeling system was the US Army Corps of Engineers Generalized Computer Program System: Open-Channel Flow and Sedimentation, TABS-2. TABS-2 is a complete depth-averaged finite element numerical modeling system. The numerical hydrodynamic model RMA-2v used physical model-derived St. Marys Inlet water levels and tributary velocity measurements for the boundary forcing conditions for an average tidal cycle. The numerical model was verified to physical model tidal elevations and depth-averaged velocity data for interior locations.