Scattered through the literature is a multiplicity of often beautiful and revealing photographs which represent a valuable source of information for teaching and research. In this album over two hundred such photographs have been collected from ten different countries and assembled with descriptive captions, together with a comprehensive list of references. It would be extremely difficult to present such a vast subject as fluid mechanics in any linear fashion. Here the progression is generally from l o w to high speed flow; thus the earlier sections on creeping flow, laminar flow and separation are followed by sections on vortex motion and instability leading up to turbulence. Two further sections cover free surface flow and natural convection and the volume concludes with material on subsonic flow, shock waves and supersonic flow.
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Ocean Engn. The introduction says it all. Professor Van Dyke dreamed of the day he would assemble a collection of impressive photographs of assorted flows that would supplement text books in fluid mechanics. The manifestation of that dream is An Album of Fluid Motion, and it is beautifully done without thought of commercialization or personal gain. They were taken from scholarly papers by the best in the business, arranged in a delightful yet informative manner.
The photographs are arranged in eleven chapters. First comes creeping flow, Hele-Shaw flow past various two-dimensional objects for Reynolds number less than unity. Next is laminar flow past objects, showing the onset of separation, including the flat plate at zero incidence and the Blasius boundary layer. Chapter 3 is devoted to both laminar and turbulent separation, with application to the circular cylinder, curved walls, and spheres.
A very nice collection of photographs covers the impulsive motion of a flat plate. One of my favourite chapters is that of vortex motion, where a large class of different flows is presented.
Some of the early Prandtl experiments are duplicated, and I think the newer photographs are superior to those we know so well. Chapter 5 is especially exciting as it contains some of the most beautiful illustrations of the Tollmien-Schlichting waves in the literature. The vortex ring is covered though I was disappointed not to see T. The highly skilled experimental technique of T. Sarpkaya is evident with the sequence of photographs on vortex breakdown.
The vortex breakdown on a triangular wing shot by Werle may not be as dramatic nor as informative as the earlier famous Lambourne and Bryer photograph.
Convection is nicely covered as is shear flow and breakup of sheets and drops. Chapters 6 and 7 contain few surprises except for the interesting comparison of the wake of a ruptured oil tanker with the wake of an inclined fiat plate. Chapter 6 deals with turbulence and Chapter 7 treats free-surface flow including jets and waves. Natural convection has familiar flow phenomena, each photograph striking in its clarity, showing isotherms and streaklines. Chapters cover compressible flow using shadowgraph, interferometry and schlieren techniques.
There are some treasures. The ensemble presents the results of using a wide assortment of experimental techniques that should be exposed to most undergraduates and that some schools cannot duplicate.
The photographs pinpoint both primary and secondary fluid motions. The negatives are arranged so that the ambient flow moves from left to right or the body moves from right to left. The captions and legends are by Van Dyke, each succinctly describing the salient aspects of the photograph. I cannot imagine a fluid dynamicist without this wonderful book. It should be required reading for all graduate students in the fluid thermal engineering field.
In my own case, I shall try to obtain permission to obtain transparencies to highlight my lectures. The only fault could possibly lie in the fact that certain areas were omitted, or that it is not in color.
[Milton Van Dyke] Album of Fluid Motion [English]
Milton Van Dyke: “An Album of Fluid Motion”
An Album of Fluid Motion