M3 Wave DMP/APEX WEC Final Technical Report


This project successfully developed methods for numerical modeling of sediment transport phenomena around rigid objects resting on or near the ocean floor. These techniques were validated with physical testing using actual sediment in a large wave tank. These methods can be applied to any nearshore structure, including wave energy devices, surge devices, and hinged flap systems. These techniques can be used to economically iterate on device geometries, lowering the cost to refine designs and reducing time to market.

The key takeaway for this project was that the most cost-effective method to reduce sediment transport impact is to avoid it altogether. By elevating device structures lightly off the seabed, sediment particles will flow under and around, ebbing and flowing naturally. This allows sediment scour and accretion to follow natural equalization processes without hydrodynamic acceleration or deceleration effects of artificial structures.

This submission includes the final technical report for this DOE project. The objective of this project was to develop a set of analysis tools (hydrodynamics and structural models providing inputs into a sediment model), and use those tools to identify and refine the optimal device geometry for the Delos-Reyes Morrow Pressure Device (DMP), commercialized by M3 Wave LLC as "APEX."

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Additional Info

DOE Project Name: Improved Survivability and Lower Cost in Submerged Wave Energy Device
DOE Project Number: EE0007345
DOE Project Lead: Tim Ramsey
Last Updated: over a year ago
Data from May, 2018
Submitted Oct 1, 2018


M3 Wave



Publicly accessible License 


Mike Morrow
M3 Wave
Mike Delos-Reyes
M3 Wave
Alice Gillespie
M3 Wave
Ryan Coe
Sandia National Laboratories
Chris Chartrand
Sandia National Laboratories
Fabian Wendt
National Renewable Energy Laboratory
Tuba Ozkan-Haller
Northwest National Marine Renewable Energy Center OSU
Pedro Lomonaco
Northwest National Marine Renewable Energy Center OSU
Yi-Hsiang Yu
National Renewable Energy Laboratory
Jesse Roberts
Sandia National Laboratories
Sterling Olson
Sandia National Laboratories
Craig Jones
Integral Consulting Inc
Steve Spencer


MHK, Marine, Hydrokinetic, energy, power, WEC, wave, converter, ocean, technology, numerical, test, simulation, lab test, laboratory, testing, tank test, tank testing, harvester, submerged, pressure differential, stationary, seabed mounted, gravity base, sediment transport, nearshore, surge, hinged, flap, economics, APEX, DMP, Delos-Reyes Morrow Pressure, M3 Wave, LCOE, WEP


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