Spray-Wall Interaction Model Considering Superheating Degree of the Wall Surface
Spray-Wall Interaction Model Considering Superheating Degree of the Wall Surface
复制标题
考虑壁面过热度的喷淋壁相互作用模型
DOI：
10.1299/kikaib.66.604
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
H. Fujimoto
中科院分区：
文献类型：
--
作者：
Koichi Ashida;Tomohiro Takahashi;Tomoyuki Tanaka;J. Yeom;J. Senda;H. Fujimoto
在这项研究中，提出了一个新的概念，以模拟多组分燃料喷雾撞击在热表面上的行为。燃料的蒸馏曲线被认为是描述瓦斯油中各组分的汽化性质，因为由壁面温度与燃料饱和温度之间的温差定义的表面过热程度影响固液沸腾状态。首先，计算了单组分燃料的碰撞喷雾，确定了不同燃料的蒸发特性和碰撞特性的差异。其次，建立了喷雾撞击子模型。在该模型中，考虑了液滴破碎、反射和弥散过程随沸腾状态的不同而不同。这个新的子模型被纳入KIVA -II代码。并与KIVA-II原程序计算结果进行了比较。
In this study, a new concept is proposed in order to simulate the behavior of multi-component fuel spray impinging on a hot surface. Distillation curve of the fuel is considered to describe the vaporization property of each comp onent in gas oil, since the superheating degree of the surface, defined by the temperature difference between the wall surface and the fuel saturated temperature, affects the solid-liquid boiling state. Firstly, some impinging sprays structured by single component fuel are calculated to confirm the difference of vaporizing characteristics and impinging behavior in each fuel. Secondary, the spray impingement submodel is made. In this model, the difference of droplet breakup, reflection and dispersion process with the difference of boiling state is considered based on several experimental results of impinging droplet on a hot wall. This new submodel is incorporated into KIVA -II code. And the results calculated by this model are compared with that obtained by KIVA-II original code.