نوع مقاله : مقاله علمی
نویسندگان
1 گروه مهندسی مکانیک،دانشگاه فنی و حرفه ای
2 دانشکده مهندسی مکانیک، دانشگاه صنعتی سیرجان، سیرجان، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Here, Discrete Element Method (DEM) has been used to study effects of vibration, created by a vibrator, on the outflow of silos. To ensure the simulations accuracy, sensitivity analysis was performed on the numerical solution factors. For validation, comparisons with the results available in the open literature have been made. Realistic conditions show that when the opening of the silo is not large enough, the silo becomes blocked. Here, by performing a number of simulations, the opening size threshold at which the silo becomes blocked was determined and named as the critical size. Numerical studies have been done for different values of the outlet size, vibration frequency and amplitude. Moreover, to find out effects of the vibrator location, relevant stimulations were conducted, and based on the obtained results, when its location was within 20% of the bottom height of the discharge funnel, it had the greatest effect. Furthermore, it was found that by increasing the vibration frequency, the impact of the vibrator increases however, the difference in the effects of different frequencies decreases with the increase of the vibration amplitude. In addition to the theoretical explanation, physical interpretation and reasoning has also been discussed.
کلیدواژهها [English]
)