The oleo-pneumatic shock absorber involves a complex two-phase flow in the working process. In this paper, simple model was established, and volume-of-fluid (VOF) adopted to accurately simulate distribution of field through commercial software FLUENT 2020 R2. accuracy simulation verified by method engineering damping force estimation, error numerical results compared with estimation 7–8%. By si...

In this experiment, the chemical composition of the essential oils obtained from Ferula assa-foetida oleo-gum resin collected from two different sites of Yazd province (Tabas and Yazd) in the center of Iran, were identified. The gas chromatography mass-spectroscopy (GC/MS) data showed that the qualitative composition of the components appeare...