Experimental and modeling study on ignition delay times of dimethyl ether-propane-oxygen-argon mixtures at 20 bar (PDF)
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Experimental and modeling study on ignition delay times of dimethyl ether-propane-oxygen-argon mixtures at 20 bar (PDF)
- 发表刊物：
- Energy & Fuels
- 摘要：
- Ignition delay times of dimethyl ether/propane/oxygen/argon mixtures at pressure of 20 bar were measured in a shock tube at different DME blending ratios (0%, 20%, 50%, 80% and 100%), equivalence ratios (0.5, 1.0 and 2.0), and temperatures (1100-1500 K). Validations of chemical kinetic models were made using available chemical kinetic models. A modified chemical model (Mod Mech C5) was proposed and it can predict well the experimental ignition delay times and activation energies of pure propane, pure DME and their blends. Both experimental and numerical results show that with the decrease of temperature, the logarithmic ignition delay time is increased linearly and activation energy is decreased slightly. With the increase of equivalence ratio, the ignition delay time is increased for propane but decreased for DME. Ignition delay time is decreased with the increase of DME blending ratio and the reduction rate is increased with an increase in equivalence ratio. Sensitivity analysis and radical pool analysis were performed to interpret the promoting effect of DME addition on the ignition of dimethyl ether/propane mixtures.
- 合写作者：
- Hu EJ, Zhang ZH, Pan L, Zhang JX, Huang ZH
- 卷号：
- 2013, 27(7): 4007-4013
- 页面范围：
- 4007-4013
- 是否译文：
- 否
- 发表时间：
- 2013-07-18