Kibble-Zurek scenario of topological defects formation is extended to inhomogeneous first and second order transitions. In both cases there is characteristic threshold velocity of critical front propagation below which no topological defects are produced. Instead oriented condensate is grown behind moving temperature or pressure front.

PACS numbers: 05.70.Fh, 11.15.Ex, 11.27.+d, 67.40.Vs