http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
선택적 촉매환원 장치 내부 유동 모사를 위한 다공성 매질 모델 개발
정원준(Wonjun Jung),한종호(Joungho Han),박한준(Han June Park),황원태(Wontae Hwang) 대한기계학회 2023 대한기계학회 춘추학술대회 Vol.2023 No.11
The complex flow inside SCR facilities can be examined using computational fluid dynamics (CFD) simulations where the screen plate is modeled as porous media owing to its complex shape. This porous media model nominally utilizes the pressure loss across the screen plate. However, a-priori determination of the model is difficult if on-site pressure data are unavailable or additional laboratory experiments cannot be performed. We hereby describe the development of a method for the porous media approach based on mathematical modeling of the force balance on the screen. This allows us to utilize the porous media approach without having any pressure drop information. We conducted particle image velocimetry (PIV) experiments to first validate CFD simulations that fully resolved the screen plate. Subsequently, CFD results using the porous media approach with the newly developed mathematical model were compared to that of the fully resolved simulations, and the overall flow structure including the main recirculation zone was shown to be similar. Thus, using the newly developed mathematical model, the internal flow field in complex engineering systems such as an SCR facility can be rapidly obtained with less computational cost and reasonable accuracy.