I want to create a transportation model. I have identified importing and exporting countries with their estimated demand and supply. The cost of transportation per one uni is already calculated for each ex- and importer. Some exporters transport the hydrogen by ship and others by pipeline.
The problem I have is that I need to introduce losses when it is transported by ship. About 20% is lost and won't reach the importer. For pipeline transport there is no losses. I am having trouble to implement this into the objective function or the constraints. Is there a way to integrate this into the model?