I'm not 100% sure about Mathematical Modeling. But given you checked out TU Delft you might as well check out Utrecht University. They have a very cool and hand

I'm not 100% sure about Mathematical Modeling. But given you checked out TU Delft you might as well check out Utrecht University. They have a very cool and hands on Math department and offer 2 week Summer schools to take a look - possible to get a cost reimbursement if that's an issue. Once you're there you can just ask what they recommend. Edit: https://www.uu.nl/en/organisation/mathematical-institute/research/mathematical-modelling https://www.uu.nl/en/organisation/mathematical-institute/res...