Numerical simulations of Gowdy spacetimes on $S^2\times S^1\times R$

Numerical simulations are performed of the approach to the singularity in Gowdy spacetimes on $S^2\times S^1\times R$. The behavior is similar to that of Gowdy spacetimes on $T^3\times R$. In particular, the singularity is asymptotically velocity term dominated, except at isolated points where spiky features develop.