Indian Society for Heat and Mass Transfer
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Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017)

ISSN: 2688-7231 (Online)

FLOW CONTROL STUDY IN LID-DRIVEN CAVITIES USING REDUCED ORDER MODELLING

Kartik Krishna
Department of Mechanical Engineering BITS Pilani, Dubai Campus, Dubai, UAE

Shashank Khurana
Department of Mechanical Engineering BITS Pilani, Dubai Campus, Dubai, UAE

DOI: 10.1615/IHMTC-2017.1160
pages 821-825

要約

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.

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