Fiches de cours 2017-2018

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Caution, these contents corresponds to the coursebooks of last year


Atmospheric Boundary Layer

ENV-715

Lecturer(s) :

Khani Sina
Porté Agel Fernando

Language:

English

Frequency

Every 2 years

Remarque

Every two years / Next time : Fall 2018

Summary

This course covers the fundamental concepts, mathematical descriptions and physical interpretations of turbulent transport and energy exchange in the atmospheric boundary layer. The course includes eight chapters in total and requires some basic knowledge of fluid mechanics as the prerequisite.

Content

The course will fairly follow the book `Introduction to Boundary-Layer Meteorology' by Roland Stull, Springer, reprinted (2009).

The covered chapters are as follows:

  1. Introduction to ABL characteristics: a boundary-layer definition, turbulent transport, virtual and potential temperature, boundary layer depth and structure.
  2. Statistics: mean flow and fluctuations, turbulence kinetic energy, mean and eddy fluxes. 
  3. Governing equations of turbulent fluxes: mean flow and fluctuations.
  4. Turbulent kinetic energy (TKE), stability and scaling: the TKE budget, stability concepts, the Obukhov length scale.
  5. Turbulence closure problem: Prandtl's mixing length theory, energetics of Reynolds equations.
  6. Spectral dynamics of turbulence:Fourier variables of the Navier-Stokes equations, the energy spectrum.
  7. Similarity theory: dimensional analysis, stable and convective boundary layers.
  8. Measurments and simulations: filed experiments, large eddy simulations.

In the programs

Reference week

 
      Lecture
      Exercise, TP
      Project, other

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  • Autumn semester
  • Winter sessions
  • Spring semester
  • Summer sessions
  • Lecture in French
  • Lecture in English
  • Lecture in German