I have received my grade for the Smoke and water handin, I was rewarded the grade 10, which is the pretty good, and I am very satisfied. Along with the grade I got a review of the paper I handed in. The review was very positive like in: "This paper is very well written", "The fact that the author takes outset in a real world situation(...) is really good", and "shows that the author has a great understanding of the methods employed" which is pretty much my own understanding... the review also had some criticism like more motiviation and an additional real image of colored smoke from aircrafts for comparison with my results, and also my lacking demonstration of vorticityconfinement. All very reasonable points of criticism.
I can definitely recommend written reviews of handins as a means of feedback, it is very useful.