Experimental and analytical study on biodiesel and diesel spray characteristics under ultra-high injection pressure (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 analytical study on biodiesel and diesel spray characteristics under ultra-high injection pressure (PDF)
- 发表刊物：
- Int J Heat Fluid Flow
- 摘要：
- Spray characteristics of biodiesels (from palm and cooked oil) and diesel under ultra-high injection pressures up to 300 MPa were studied experimentally and analytically. Injection delay, spray penetration, spray angle, spray projected area and spray volume were measured in a spray vessel using a high speed video camera. Air entrainment and atomization characteristics were analyzed with the quasi-steady jet theory and an atomization model respectively. The study shows that biodiesels give longer injection delay and spray tip penetration. Spray angle, projected area and volume of biodiesels are smaller than those of diesel fuel. The approximately linear relationship of non-dimensional spray tip penetration versus time suggests that a self-similar state is achieved and the behavior of biodiesel and diesel sprays is similar to that of gaseous turbulent jets. Calculation from the quasi-steady jet theory shows that the air entrainment of palm oil is worse than that of diesel, while the cooked oil and diesel present comparable air entrainment characteristics. The estimation on spray droplet size shows that biodiesels generate larger Sauter mean diameter due to higher viscosity and surface tension.
- 合写作者：
- Wang XG, Huang ZH, Kuti OA, Zhang W, Nishida K
- 卷号：
- 2010, 31(4): 659-666
- 页面范围：
- 659-666
- 是否译文：
- 否
- 发表时间：
- 2010-06-10