Ludwig Prandtl, with his fundamental contributions to hydrodynamics, ae- dynamics, and gas dynamics, greatly in?uenced the development of ?uid - chanics as a whole, and it was his pioneering research in the ?rst half of the last century that founded modern ?uid mechanics. His book Fu]hrer durch die Str]omungslehre, which appeared in 1942, originated from previous pub- cations in 1913, Lehre von der Flu]ssigkeit und Gasbewegung, and 1931, Abriss der Str]omungslehre. The title Fu]hrer durch die Str]omungslehre, or Essentials of Fluid Mechanics, is an indication of Prandtl's intentions to guide the reader on a carefully thought-out path through the di?erent areas of ?uid mech- ics. On his way, the author advances intuitively to the core of the physical problem, without extensive mathematical derivations. The description of the fundamental physical phenomena and concepts of ?uid mechanics that are needed to derive the simpli?ed models has priority over a formal treatment of the methods. This is in keeping with the spirit of Prandtl's research work. The ?rst edition of Prandtl's Fu]hrer durch die Str]omungslehre was the only book on ?uid mechanics of its time and, even today, counts as one of the most important books in this area. After Prandtl's death, his students Klaus Oswatitsch and Karl Wieghardt undertook to continue his work, and to add new ?ndings in ?uid mechanics in the same clear manner of presentation."

The German Aerospace Research Establishment (DFVLR) has initiated a new series of seminars concerning fundamental problems in applied engineering sciences. These seminars will be devoted to interdisciplinary topics related to the vast variety of DFVLR activities in the fields of fluid mechanics, flight mechanics, guidance and control, materials and struc tures, non-nuclear energetics, communication technology, and remote sensing. The purpose of the series is twofold, namely, to bring modern ideas and techniques to the attention of the DFVLR in order to stimulate internal activi ties, and secondly, to promulgate DFVLR achievements wi thin the international scientific/technical community. To this end, prominent speakers from Germany and other countries will be invited to join in a series of lectures and discussions on certain topics of mutual interest. The first colloquium of this series dealt with the dynamics of nonlinear systems, especially in relation'to its application to fluid mechanics, particularly in transcritical flows. Of special interest are questions concerning the formation of nonlinear three-dimensional structures in classical fluid mechanical stability problems, the physical process of transition to turbulence, and the appearance of chaotic solutions. The scope of lectures reaches from self-organization in physical systems to structural stability of three-dimensional vortex patterns, the treatment of dissipative and conservative systems, the formation of nonlinear structures in the region of laminar-turbulent transition, and numerical simulation of cumulus cloud convection in meteorology. The seminar should provide an insight into the extent to which theoretical findings in Non linear Dynamics apply to the comprehension of fluid-mechanical problems."

Ludwig Prandtl, with his fundamental contributions to hydrodynamics, ae- dynamics, and gas dynamics, greatly in?uenced the development of ?uid - chanics as a whole, and it was his pioneering research in the ?rst half of the last century that founded modern ?uid mechanics. His book Fu]hrer durch die Str]omungslehre, which appeared in 1942, originated from previous pub- cations in 1913, Lehre von der Flu]ssigkeit und Gasbewegung, and 1931, Abriss der Str]omungslehre. The title Fu]hrer durch die Str]omungslehre, or Essentials of Fluid Mechanics, is an indication of Prandtl's intentions to guide the reader on a carefully thought-out path through the di?erent areas of ?uid mech- ics. On his way, the author advances intuitively to the core of the physical problem, without extensive mathematical derivations. The description of the fundamental physical phenomena and concepts of ?uid mechanics that are needed to derive the simpli?ed models has priority over a formal treatment of the methods. This is in keeping with the spirit of Prandtl's research work. The ?rst edition of Prandtl's Fu]hrer durch die Str]omungslehre was the only book on ?uid mechanics of its time and, even today, counts as one of the most important books in this area. After Prandtl's death, his students Klaus Oswatitsch and Karl Wieghardt undertook to continue his work, and to add new ?ndings in ?uid mechanics in the same clear manner of presentation."

Dieses Fachbuch gilt unumstritten als das Standardwerk der Stroemungslehre. In der von renommierten Stroemungswissenschaftlern verfassten aktuellen 15. Auflage wurden alle Kapitel auf den neuesten Erkenntnisstand gebracht. In ganzheitlicher Weise werden die Stroemungen vom phanomenologischen Standpunkt her betrachtet und Systematiken daraus abgeleitet. Den Autoren gelingt es, den Blick fur das Verstandnis von Einflussen und Vorgangen zu scharfen. Der Prandtl ist als klassisches Lehrbuch aber auch als Nachschlagewerk besonders gut geeignet.

Dieses Lehrbuch beschreibt anschaulich die Grundlagen der Biostromungsmechanik und Biomechanik. Es behandelt deren Anwendung auf das Fliegen und Schwimmen von Lebewesen sowie auf die Blutzirkulation des Menschen. Aus den biostromungsmechanischen Erkenntnissen werden technische Losungen der Widerstandsreduzierung fur die Luft- und Schifffahrt sowie Operationstechniken fur den Menschen abgeleitet und dargestellt.

Das Lehrbuch Stroemungsmechanik fuhrt anschaulich in die Grundlagen, Grundgleichungen und Loesungsmethoden der Stroemungsmechanik ein und hat sich zu einem Standardwerk in der Stroemungsmechanikausbildung entwickelt. Es behandelt systematisch die Einfuhrung stroemungsmechanischer Software, die der Entwicklungsingenieur in der Industrie vorfindet. Der Naturwissenschaftler findet die stroemungsphysikalischen Grundlagen, deren Kenntnisse insbesondere fur die Meteorologie und Geophysik erforderlich sind. In der aktuellen Auflage wurden weitere Anwendungsbeispiele erganzt und substantielle Leserhinweise berucksichtigt.