Turbulent fluid flow

Michael Wilkinson, Applied Mathematics, uses the cluster in connection with ‘Strings in turbulent flow’ investigating the statistics of the configuration of a string advected by a turbulent fluid flow assessing whether it forms a compact, folded conformation like a random walk, or an extended conformation pulled out by large-scale eddies in the flow.

Other numerical studies will address the smallest objects produced by gravitational collapse It is commonly claimed that a cloud of interstellar gas which undergoes gravitational collapse will fragment into smaller pieces, until the fragments are dense enough that they are opaque to their own black body radiation.

There are persuasive reasons to doubt this criterion, which suggest that fragmentation can continue until the pieces are significantly smaller than currently expected. Numerical work will be done to test theoretical estimates. This will use a variant of an SPH method which includes radiative transfer.