2-甲基呋喃及其与异辛烷掺混燃料喷雾的微观特性研究

摘要

The second generation of biofuel 2-methfuran (MF) had drawn a lot of attention due to its unique physical and chemical properties and the investigation on atomization effect of MF and its blended fuel became very important .Under differ-ent injection pressures ,ambient temperatures and back pressures ,the droplet diameter and velocity of spray for M F ,isooctane and MF50 blended fuel were researched with phase Doppler particle analyzer(PDPA) .The results show that the droplet size is large in the center of fuel beam and small on both edges .The velocity of droplet decreases with the increase of back pressure and shows a bimodal and unimodal distribution at low and high back pressure respectively .With the increase of back pressure , the droplet size of isooctane increases and the droplet size of M F first decreases then increases .%第二代生物燃料2-甲基呋喃(M F )由于其独特的物理化学性质受到学者们的广泛关注 ,研究M F以及它的掺混燃料在不同条件下的雾化效果也显得尤为重要.利用相位多普勒技术(PDPA ) ,在不同喷射压力、环境温度、环境背压下 ,研究了M F、异辛烷以及两者等体积掺混燃料M F50喷雾的粒径与速度分布规律.结果表明 :测试燃料的喷雾粒径整体分布呈现油束中心大 ,两端小的对称分布.微粒速度随环境背压的增加而降低 ,并且在低背压下速度为双峰分布 ,高背压下则是单峰分布.随着环境背压的增大,异辛烷粒径不断增加 ,MF粒径先减小再增加.