Are there any simulations of the Grand tack?
Kevin Walsh, lead author of the original Grand Tack paper has a page on his website discussing the Grand Tack model and subsequent work. At the bottom of this page there is a movie of the evolution taken from the numerical simulation that was the basis of the paper and the Grand Tack model. Sean Raymond (one of the other authors on the Walsh et al. 2011 paper) also have some movies on his research webpage on the Grand Tack model. There is also a presentation from the 2019 Sagan Workshop which discusses terrestrial planet formation in more detail and presenting the 2 other possible solutions, along with the Grand Tack model, to the early Solar System formation problems such as the so-called "small Mars" problem.