Abstract: A new type of arching and rat-holding free hopper was designed for the flow of granular material by using the Discrete Element Method. Such hoppers are immensely helpful in the food, biopharmaceutical and agriculture industries. The DEM is a complex method that resolves the problem of storage and flow of granular material in a hopper. It is a time taking procedure as the granular particles search for the contact between each other. Initially, when the particles are filled in the hopper, the velocity is greater; however, at the time of discharging material out of the hopper the velocity of flow of granular material at the orifice end is smaller. The total particles are discharged within 0.17 second, having different diameters and velocities. Keywords: Agriculture, Discrete element method, Granular particles, Hopper, Pharmaceuticals. INTRODUCTION In the field of mining, pharma industry, mineral processing, the flow of granular material through hopper is crucial. In industries, lots of problems happened related to the flow of granular material through hopper like ratholing, arching, bridging, erratic flow, segregation etc. The storage and the flow of granular material through hoppers are very important in pharma, mining and chemical industries (Langston et al., 1995). The flow of granular material through hopper has been popular modelling for many years.The simulation of granular material through hopper is done by the using Discrete Element Method (DEM), which is also known as the Distinct Element Method. This is a numerical method for computing the effect of a large number of small particles and the effect of motion (Cleary and Sawley, 2002). In DEM, the particles are used as monodisperse or polydisperse. DEM models can qualitatively predict mass flow, precise prognosis of funnel flow and another phenomenon such as arching, ratholing etc. In this model, discharge mass flow rate, change in the flow pattern, discharge velocity is derived (Yuan and Saxén, 2011). The DEM is a very advanced and complex method for studying the behavior of granular material which flows through the hopper. The simulation of different geometrically- complex industrial applications, 3D simulation of large particles, which cause issues in the industry (Cleary and Sawley, 2002) is studied. The DEM neglecting because it affects the inter- particle cohesion and the particle shape (Yuan and Saxén, 2011). At the time of filling hopper, the velocity of flow of granular material is greater International Journal of Biological Innovations http: //ijbi.org.in | http://www.gesa.org.in/journals.php Doi: https://doi.org/10.46505/IJBI.2021.3216 IJBI 3(2): 355-359 (2021) E-ISSN: 2582-1032 FLOW OF GRANULAR MATERIAL OUT OF HOPPER: APPLICATION IN FOOD, AGRICULTURE AND PHARMACEUTICAL INDUSTRY Ayushi Singh and Vishal Mishra* School of Biochemical Engineering IIT, Banaras Hindu University, Varanasi (U.P.), India *Corresponding author: vishal.bce@itbhu.ac.in Article Info: Research Article Received 10.09.2021 Reviewed 25.09.2021 Accepted 03.10.2021 GESA GLOCAL ENVIRONMENT & SOCIAL ASSOCIATION