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hydrodynamics|ˌhəɪdrəʊdaɪ-, -dɪˈnæmɪks|
[ad. mod.L. hydrodynamica: see hydro- a and dynamics. Cf. F. hydrodynamique.
The Lat. word appears in a treatise by Daniel Bernoulli, 1738, entitled ‘Hydrodynamica, sive de viribus et motibus fluidorum commentarii’.]
The branch of Physics which treats of the forces acting upon or exerted by liquids. In earlier use = hydrokinetics; now usually taken in a comprehensive sense to include Hydrokinetics and Hydrostatics; but the earlier usage is still retained by some physicists. (Cf. dynamics.)
1779Mann in Phil. Trans. LXIX. 596 The certain principles of hydrodynamics laid down in this essay. 1794G. Adams Nat. & Exp. Philos. III. xxxiii. 338 The science describing the mechanical affection of fluids..is properly and usually called by foreign writers hydrodynamics. 1812Playfair Nat. Phil. (1819) I. 17 When the bodies to which motion is communicated are fluid, another modification of the principles of dynamics takes place, which consititutes the science of hydrodynamics. 1829Nat. Phil. I. Hydrost. i. 1 (U.K.S.) The whole science of liquids, or watery fluids, comprehending both Hydrostatics and Hydraulics, is sometimes called Hydrodynamics. 1881Sir W. Thomson in Nature No. 619.434 Some of the finest principles of mathematical hydrodynamics have..been put in requisition for perfecting the theory of hydraulic mechanism. |