Flow field analysis of cigarette filter through micro-CT-based geometries and CFD simulation

• DOI: 10.1016/j.heliyon.2024.e29253
• Publication Date: 2024-04-04T09:06:02Z
• Authors: Yunfei Song; Zixuan Liu; Zhiwei Sun; Wen Du; Zhiguo Wang; Zhigang Hu; Ming Ma; Zhiyong Wang
• Keywords: H1-99; Science (General); Cigarette filter; Porous media; 02 engineering and technology; Computational fluid dynamics; Social sciences (General); Q1-390; Flue gas; 0205 materials engineering; Wrapped paper; Micro-CT reverse engineering; Research Article

The cigarette filter is an essential component of modern cigarettes and studying the flow distribution within great significance in reducing harm optimizing smoking sensations. As object numerical simulation research, a three-dimensional model was accurately constructed through micro-CT reverse engineering, achieving scanning accuracy 4.05 μm. An overall porous media established to characterize pressure inside filter. Based on reconstruction, local cavity-filtered created by extracting 1/36 geometric model. results were used as boundary conditions for filter, effects wrapped paper cavity field analyzed. show that simulated drop had deviation less than 3.5% compared experimental results. This suggests can effectively predict changes When both present, velocity at interface between acetate fiber increased 141.54%, while approached 0 Pa. Similarly, cavity, 130.77%. It indicates significantly influenced characteristics Additionally, porosity gradually from 0.69 0.99 radial direction, fluid 14.46%, decreased 29.09%. These particularly evident when below 0.87.