Geometry Simplification of Wrinkled Wall Semi-rigid Aluminum Containers in Heat Transfer Simulation

Abstract

Semi-rigid aluminum containers are being used widel y in food industries. They have wrinkle shaped walls for strengthening their physic al structure. The objective of this study was to assess the effect of wrinkled parts on the heat transfer and temperature distribution of the containers by Computational Flu id Dynamics (CFD) analysis. Therefore, a precise designed geometry of the wrink led walls container was compared to a straight one. The analysis was carried out based on the physical properties of a carrot- orange soup. The velocity vectors showed a strong c irculation towards the core. The Slowest Heating Zone (SHZ) locations were the same for wrinkled and simplified containers. Average temperature of the symmetric pl ane and the coldest point of SHZ showed less than 1% difference. The lethality impos ed to the SHZ in the wrinkled wall container was about 0.4% more than the straight one . The simulation results revealed that wrinkled walls do not play an important role i n increasing heat transfer and as a result, such geometries could be simplified while m odeling. Keywords : Can geometry, CFD, Heat transfer, Semi-rigid alum inum container, SHZ, Wrinkled wall