This book provides a general introduction to the topic of turbulent flows. Apart from classical topics in turbulence, attention is also paid to modern topics. After studying this work, the reader will have the basic knowledge to follow current topics on turbulence in scientific literature. The theory is illustrated with a number of examples of applications, such as closure models, numerical simulations and turbulent diffusion, and experimental findings. The work also contains a number of illustrative exercises Review from the Textbook & Academic Authors Association that awarded the book with the 2017 Most Promising New Textbook Award: "Compared to other books in this subject, we find this one to be very up-to-date and effective at explaining this complicated subject. We certainly would highly recommend it as a text for students and practicing professionals who wish to expand their understanding of modern fluid mechanics."

1 Introduction.- 2 Equations of motion.- 2.1 incompressible flow.- 2.2 the Boussinesq approximation.- 2.3 coordinate system.- 3 Stability and Transition.- 3.1 stability analysis.- 3.2 Kelvin-Helmholtz instability.- 3.3 Rayleigh stability criterion.- 3.4 stability of a one-dimensional flow.- 3.5 routes to chaos.- 4 The characteristics of turbulence.- 4.1 the Burgers equation.- 4.2 phenomenology.- 4.3 experimental and numerical methods.- 5 Statistical description of turbulence.- 5.1 statistics.- 5.2 stationarity and homogeneity.- 5.3 the Reynolds equations.- 5.4 kinetic theory of momentum transfer.- 6 Turbulent flows.- 6.1 channel flow.- 6.2 mean velocity profile.- 6.3 scaling of turbulent wall flows.- 6.4 wall roughness.- 6.5 pressure gradient.- 6.6 free turbulent flows.- 6.7 the free jet.- 7 Kinetic energy.- 7.1 kinetic energy of the mean flow.- 7.2 kinetic energy of turbulence.- 7.3 Prandtl's one-equation model.- 7.4 energy equation per component.- 7.5 convective turbulence.- 7.6 the convective boundary layer.- 8 Vorticity.- 8.1 vorticity equation.- 8.2 coherent structures.- 8.3 enstrophy.- 8.4 the k- (e- ) model.- 8.5 second-order closure and algebraic stress models.- 8.6 large eddy simulation of turbulence.- 9 Correlation function and spectrum.- 9.1 time correlations.- 9.2 the spectrum.- 9.3 spatial correlations and spectra.- 9.4 the Taylor hypothesis.- 9.5 scaling of turbulence spectra.- 9.6 isotropic turbulence.- 10 Turbulent diffusion.- 10.1 statistical approach.- 10.2 the diffusion equation.- 10.3 inertial transport.- A Equations of motion.- B Special topics.- B.1 Monin-Obukhov similarity.- B.2 rapid distortion theory.- B.3 aeroacoustics.- B.4 rotating turbulence (by Herman Clercx).- B.5 drag reduction by polymer additives.- Bibliography.- Index.