H. Choi, M. Hinze, K. Kunisch:
Instantaneous control of
backward-facing-step flows
In the present paper suboptimal boundary
control strategies for the time-dependent,
incompressible flow over the
backward-facing step are considered. The
objective consists in the reduction of the
recirculation bubble of the flow behind
the step. Several cost functionals are
suggested and a frame for the derivation
of the optimality systems for a general
class of cost functionals is presented.
Numerical examples are given.
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