An Experimental Study on Oyster Farming Pole Arrangement Patterns to Analyze the Efficiency of Wave Energy Dissipation Affecting Coastal Erosion and Evaluate the Potential for Electricity Generation from Wave Energy at the Front of Oyster Farming Structures

the Andaman Sea are significantly impacted by coastal erosion.
In the upper Gulf of Thailand, where mangrove forests dominate,
land has been repurposed for communities, residential areas, and
shrimp farming, leading to mangrove destruction and intensified
erosion. On the Andaman coast, widespread erosion has occurred
due to structures obstructing water currents, causing localized
erosion and sediment accumulation. These issues affect
economic activities such as tourism and coastal fisheries.
Although Thailand has developed renewable energy sources like
hydropower, wind, and solar, wave energy, which has high
potential, remains underutilized due to high costs and the
uncertainty of wave potential in various areas. This study focuses
on reducing wave energy and preventing coastal erosion by using
oyster farm poles as wave energy dissipating structures. Four pole
arrangements were tested: a rectangle, two trapezoidal patterns
(with longer or shorter parallel sides facing the waves), and a
diamond shape. These were categorized into two groups based
on void ratio. The results indicate that the rectangular and
diamond shapes are most effective for Deep Wave conditions,
while both trapezoidal arrangements perform best for
Transitional Waves. Regarding the relationship between wave
energy loss and electricity generation, at a still water level of 0.45
meters, electricity production ranged from 4.7 to 6.6 W/m with
an average wave energy loss of approximately 2%. At 0.40
meters, electricity production ranged from 4.6 to 7.2 W/m, with
an average wave energy loss of approximately 2.5%.