The Technology Monthly Volume 4

The Technology Monthly Volume 4

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 edition. Excerpt: ...and in addition to the resulting simplification, it will insure the com USE IN APPLIED HYDRODYNAMICS By William S. Franklin Professor of Physics and Fluid Dynamics, M. I. T. Every student of aerodynamics is sooner or later appalled (no milder form of expression meets the case) by the use in theory of highly idealized conditions and types of fluid motion, conditions which never obtain and types of fluid motion which do not exist and which cannot be produced. The student is apt to think, therefore, of hydrodynamic theory as hopelessly non--physical and useless. This point of view may be, and no doubt is, to some extent, right and proper, but it certainly is very greatly tempered when one is brought to see that even the simplest theoretical phases of engineering hydraulics are highly idealized, very much more so than the theoretical phases of the elementary mechanics of rigid and elastic bodies. The fundamental idea in hydraulics is the idea of fluid velocity; thus we speak of the velocity of the wind or the velocity of the water at a point in a river. But fluid motion is always more or less turbulent, or, in other words. the velocity of a fluid at a point is always subject to large hap-hazard variations in magnitude and direction, and it is evident, therefore, that the idea of velocity at a point must necessarily refer to an idealized type of fluid motion, the so-called simple flow, where the velocity at each point remains unchanged in magnitude and direction. The ideal of 'simple flow permeates the whole of engineering hydraulICS. This statement refers to the permanent type of simple flow; the definition of varying types of simple flow is too complicated to be used in this discussion. Another ideal which is extensively used in...
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Product details

  • Paperback | 96 pages
  • 189 x 246 x 5mm | 186g
  • United States
  • English
  • black & white illustrations
  • 123678183X
  • 9781236781833