The information below was gathered from the 2018 Simcenter Conference - Americas that took place October 15-17 in Detroit, Michigan.
Author: Ben Jimenes, Senior CFD Engineer
STAR-CCM+ and Design Manager were used to minimize the time required to freeze a tray of ice cubes located in the door of a french-door bottom mount household refrigerator. The objective of the optimization was the heat transfer rate maximization of the cube with the lowest surface heat transfer rate magnitude, regardless of the cube’s location in the tray. The SHERPA algorithm studied a variety of rectangular slot configurations that defined the geometric parameterization for the airflow slots above the ice tray. A pressure drop constraint defined from inlet to outlet of the air duct ensured that system-level effects would not be compromised. Local part remeshing and the simultaneous execution of four jobs accelerated the investigation of 300 total steady-state runs, such that the run time for each batch of four jobs was 20 minutes, and the total time to solve all runs was 25 hours. A time-accurate confirmation run determined a 20% reduction in the time required to freeze all cubes to the freezing temperature threshold.