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Cambridge University Press eBooks· 2012· Book chapter

Turbulence, Coherent Structures, Dynamical Systems and Symmetry

Philip Holmes, John L. Lumley, Gahl Berkooz, Clarence W. Rowley

Short summary

This book presents methods for understanding turbulence by identifying recurrent patterns (coherent structures) and simplifying the governing Navier-Stokes equations, with a new chapter on balanced POD from control theory.

AI-generated from the title and abstract; the full text is not read.

Key points

  • Turbulence can be understood by identifying coherent structures (recurrent patterns).
  • Mathematical methods simplify the Navier-Stokes equations to reveal flow dynamics.
  • A new chapter covers balanced proper orthogonal decomposition (POD) from control theory.
  • Balanced POD is useful for flows equipped with sensors and actuators.

AI-generated from the title and abstract; the full text is not read.

Abstract

Turbulence pervades our world, from weather patterns to the air entering our lungs. This book describes methods that reveal its structures and dynamics. Building on the existence of coherent structures – recurrent patterns – in turbulent flows, it describes mathematical methods that reduce the governing (Navier–Stokes) equations to simpler forms that can be understood more easily. This second edition contains a new chapter on the balanced proper orthogonal decomposition: a method derived from control theory that is especially useful for flows equipped with sensors and actuators. It also reviews relevant work carried out since 1995. The book is ideal for engineering, physical science and mathematics researchers working in fluid dynamics and other areas in which coherent patterns emerge.

The authors' abstract, as published at the source. Cambridge University Press eBooks, 2012 · DOI ↗

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Field: Computational Mechanics

Computational MechanicsEngineering