An Informal Conceptual Introduction to Turbulence: Second Edition of An Informal Introduction to Turbulence: Fluid Mechanics and Its Applications, cartea 92

Origins of Turbulence.- Methods of Describing and Studying Turbulent Flows.- Kinematics.- Phenomenology.- Dynamics.- Structure(s) of Turbulent Flows.- Turbulence Under Various Influences and Physical Circumstances.- Analogies, Misconceptions and Ill-Defined Concepts.- Conclusion/Close.- Appendix A. What is Turbulence?.- Appendix B. About the ‘SNAGS’ of the Problem.- Appendix C. Glossary of Essential Fluid Mechanics.- Appendix D: Glossary of Some Terms.

From the reviews of the second edition:
“The intention of the book under review is to serve as an introduction to a broad readership with an interest in turbulence. … the discussion is better suited to scientists in the field … . Perhaps of most interest to the mathematically inclined reader is the discussion of ‘turbulence versus mathematics and vice versa’ … .” (Govind Menon, Mathematical Reviews, Issue 2011 i)

This book is a second completely revised edition of An Informal Introduction to Turbulence. The main emphasis is on conceptual and problematic aspects, physical phenomena, observations, misconceptions and unresolved issues rather than on conventional formalistic aspects, models, etc. Apart from the obvious fundamental importance of turbulent flows such an emphasis is a consequence of the view that without corresponding progress in fundamental aspects there is little chance for progress in any applications such as drag reduction, mixing, control and modeling of turbulence. More generally there is a desperate need for physical fundamentals of the technological processes in which turbulence plays a central role.
The conceptual issues are made dominant in this second edition. This required to address in more detail those misconceptions which are the consequence of the profound difficulties of the subject and which travel from one publication to another. A new chapter titled Analogies, misconceptions and ill defined concepts was added along with a number of new sections on such topics as ergodicity, Eulerian versus Lagrangian descriptions, on validation of theories, on anomalous scaling and ill posedness of the concept of inertial range, on the Tennekes and Lumlety balance, and mathematics versus turbulence among others. Many of these are to a large extent a consequence of the series of lectures delivered in the Imperial College London in 2007 and 2008 in the frame of Marie Curie Chair in Fundamental and Conceptual Aspects of Turbulent Flows which was held by the author during the period June 1, 2006 – May 31, 2009.

Conceptual and problematic aspects Misconceptions and unresolved issues rather than conventional formalistic aspects and models Emphasis on physical phenomena and observations