Ice Cream Scheduling: Modeling the Intermediate Storage

In this work, two problem specific models are developed for the ice cream scheduling problem. These models are based on product type dedicated time slots and more efficient methods of handling the intermediate inventory limitations. The first model aggregates the intermediate inventory tanks and the second model directly relates the time slots of the packing and the mixing stages. Both models are shown to be computationally more efficient than a general RTN model using two example problems. All three models are based on a unit specific continuous time approach.