Modelling of natural convection flows with large temperature differences: a benchmark problem for low Mach number solvers. Part. 2 contributions to the june 2004 conference

In the second part of the paper, we compare the solutions produced in the framework of the conference 'Mathematical and numerical aspects of low Mach number flows' organized by INRIA and MAB in Porquerolles, June 2004, to the reference solutions described in Part 1. We make some recommendations on how to produce good quality solutions, and list a number of pitfalls to be avoided. For all the 3 test cases, we notice that asymptotic models and compressive models converge towards the reference solution. (authors)