Seventh International Symposium on Turbulence and Shear Flow Phenomena
DOI: 10.1615/TSFP7
MODAL ANALYSIS OF COMPLEX TURBULENT FLOW
pages 1-6
DOI: 10.1615/TSFP7.360
ABSTRAKT
Three-dimensional turbulent flow is highly complex and few investigations have focused on the use of modal decompositions to characterise important physical phenomena and interactions. In this paper, we consider the Proper Orthogonal Decomposition (POD) and Dynamic Mode Decomposition (DMD). We show how the correlation matrix which is needed for POD can be reused in the computation of the DMD modes. After two introductory examples, we focus on modal decompositions of a complex turbulent flow around a wall-mounted finite cylinder at Re = 2 · 105. Finally, the usefulness of both decompositions is discussed.