| Title |
Optimization of Baffle Structure for Improving Flow Uniformity in a Corona Discharge Gas Reactor |
| Authors |
Joo Hwan Ha ; Geun Sang Park ; Tae Sung Kim |
| DOI |
https://doi.org/10.6110/KJACR.2025.37.9.446 |
| Keywords |
베플 설계; 전산유체역학; 코로나 방전; 유동 균일도; 가스 반응기 Baffle Design; CFD; Corona discharge; Flow uniformity; Gas Reactor |
| Abstract |
This study examines the optimization of flow uniformity in a large-scale corona discharge gas reactor by assessing various baffle geometries and positions using Computational Fluid Dynamics (CFD). Three types of baffles (A, B, and C), each with different central blockage areas, were designed to evaluate their impact on internal velocity distribution across seven axial positions (0-300 mm). The Velocity Uniformity Index (UI) was used as a quantitative measure of flow uniformity. The results indicated that Baffle A, positioned at the 0 mm location, achieved the highest UI of 0.967, effectively flattening the velocity profile by reducing the differences between core and peripheral flows. Conversely, Baffle C, which has the largest central blockage, caused significant flow non-uniformity when placed in the front region, leading to excessive peripheral flow concentration and stagnation at the center. These findings emphasize that both the geometry and axial positioning of baffles are crucial for reactor performance and must be optimized together to achieve a balance between flow uniformity and pressure drop. The study offers practical insights for enhancing gas-phase reactor design through effective internal flow management. |