A new article by Asst. Prof. Dr. Yasin PAŞA, a faculty member of the Department of Civil Engineering, titled “Evaluation of Simulation Results of HEC-RAS Coupled 1D/2D and 2D Modeling Approaches Through Scenario-Based Analysis” has been published.
The study presents a scenario-based comparison of widely used 1D, 2D, and coupled 1D/2D flood modeling approaches, addressing a notable gap in comparative research on these methods. The Dinsiz Stream Basin was selected as the study area due to its proximity to industrial zones and residential areas, and its vulnerability to flood risk. Given the insufficiency of flow data in the basin, long-term rainfall data were used. Flood hydrographs were generated for 50, 100, 200, and 500-year return periods using statistical methods, and simulations were carried out using HEC-HMS and HEC-RAS to develop and compare both coupled 1D/2D and pure 2D models.
The results showed that maximum water levels were higher in the coupled 1D/2D model compared to the 2D-only model. The study also highlighted the potential for significant flood damage, particularly in the vicinity of the second organized industrial zone. The accuracy of the model was verified using photographs from the actual flood event that occurred in 2021, supporting the reliability of the findings.
We congratulate Asst. Prof. Dr. Yasin PAŞA on this valuable academic contribution and wish him continued success in his research endeavors.
