College of Computing, Engineering & Construction
Master of Science in Civil Engineering (MSCE)
NACO controlled Corporate Body
University of North Florida. School of Engineering
Dr. Raphael Crowley
Dr. Kelly Smith
Dr. William Dally
Dr. Alan Harris
Dr. William Klostermeyer
In recent years, pervious oyster shell habitat (POSH) units have been developed and deployed as part of living shoreline projects in Northeast Florida. POSH units are modular artificial oyster reef structures made from cement and recycled oyster shells. POSH units aim to attenuate wave energy, trap sediment, restore salt marsh habitat, and improve oyster recruitment. Previous studies demonstrated the units’ ability to attract oyster larvae and reduce shoreline bed stress in some areas. This paper looks to further understand the effect of POSH unit placement on bed stress under boat wake conditions using computational fluid dynamics (CFD). Results indicated that certain POSH unit arrangements may be preferable; a small overlap may help block flow and reduce associated stresses, while a chevron pattern may benefit sites subject to oblique waves. Understanding how POSH units affect bed stress and erosion patterns can help restoration stakeholders design future living shorelines with POSH units or other similar structures.
Cope, Lauren E., "Analysis of Pervious Oyster Shell Habitat (POSH) Unit Performance Using Computational Fluid Dynamics" (2023). UNF Graduate Theses and Dissertations. 1197.
Available for download on Thursday, July 24, 2025