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1 results

  • 7 - Elementary aspects of turbulent flows

  • from Part 1 - Fundamentals
  • Ye Zhou, Lawrence Livermore National Laboratory, California
  • Book:
    Hydrodynamic Instabilities and Turbulence
    Published online:
    27 June 2024
    Print publication:
    30 November 2024, pp 135-148

  • Summary

    Turbulent flow is a notoriously difficult topic in its own right because it is a truly multi-scale problem with strong nonlinearities. However, in this chapter, I will provide a framework for the key concepts, statistical measurements, and implications for the mixing process, so that the reader can better understand this issue. Both the classic engineering treatment of turbulence as well as the modern statistical closure theories will be introduced and brought together to show the reader how they can be synthesized to describe turbulence mixing induced by hydrodynamic instability driven flows. Some of the key concepts that I will elaborate on include energy transfer and interacting scales. The energy spectrum, and its applicability to RMI and RTI flow, is discussed.