Study on pressure oscillation characteristics in a constant volume bomb (PDF)
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Study on pressure oscillation characteristics in a constant volume bomb (PDF)
- 发表刊物：
- Combust Flame
- 摘要：
- The pressure oscillation characteristics of a promising gasoline additive Di-isopropyl Ether (DIPE) were studied. The experiments were operated in a constant volume bomb (CVB) under different initial pressure (1, 3, 5 bar) and equivalence ratio (0.8–1.6). The experimental data acquisition system includes pressure, sound pressure and vibration detection system and Schlieren system. The experimental results show that the pressure oscillation intensity first increases and then decreases with increasing of the equivalence ratio, and the overall oscillation intensity increases with initial pressure. The sound pressure, vibration intensity and gray-scale brightness extracted from flame processing photos all have the same tendency. N2 is replaced by He and CO2 dilution gas with different blending ratios to investigate the change of oscillation. The effects of several factors’ behavior were studied. When Markstein length is low, the pressure oscillations become much easier to occur. The increase of Zeldovich number can decrease the intensity of oscillations. It is induced that the combustion instability is the main reason for pressure oscillations in constant volume bomb.
- 合写作者：
- Ge RH, Hu EJ, Ku JF, Li JX, Huang ZH
- 卷号：
- 2021, 229, 111387
- 页面范围：
- 111387
- 是否译文：
- 否
- 发表时间：
- 2021-07-15