FLOW CONTROL STUDY IN LID-DRIVEN CAVITIES USING REDUCED ORDER MODELLING
Modal Decompositions are an important tool in the study
of vibration type problems where we can ascertain mode shapes
and mode frequencies for a given oscillation. The Dynamic
Mode Decomposition (or DMD for short) is way of performing
a modal decomposition on fluid flows by collecting data from
either a simulation or real life experiment. In this paper we have used the DMD to find "mode shapes" and "mode frequencies"
of a Lid-Driven Cavity flow with both varying and non-varying
boundary conditions in time using some modifications to the
method. We then use these mode shapes and frequencies to
construct a reduced-order model which can be used to predict
future states of the flow at lower computational costs and allow us to use active flow control strategies.