Derosion Lattice Performance and Optimization in Solving an End Effect Assessed by CFD: A Case Study in Thailand’s Beach

Thailand’s beach had a severe coastal erosion problem at the end of rock dams called “end effect”. One innovative solutions to solve this is use derosion lattice (DL). However, since DL performance depends on installing conditions such as angle attack, placement position, terrain, and climate, computational fluid dynamics (CFD) was applied assess effect’s occurrence optimize DL’s installation. Based Khao Rup Chang’s condition, suffered in Thailand used case study, free surface flow simulation performed transient state using ANSYS Fluent, CFD software, which revealed water waves through with without installation cases. Furthermore, CFD-assessed results indicated that attack position affected expected. In optimization, 15° adjacent dam proper condition. After being actual site, can help reduce erosion, increase sedimentation, effect excellent performance.