| 释义 |
Weber number Physics.|ˈveɪbə(r), ˈwɛbə(r)|
Also Weber's number.
[tr. G. webersche zahl (F. Eisner 1932, in Wien & Harms Handb. d. Experimentalphysik IV. iv. 225), f. the name of Moritz Weber (1871–1951), German naval engineer, who first formulated it in 1919.]
A dimensionless quantity used in the study of surface tension, bubbles, and waves, usu. expressed as ρlv2/γ or the reciprocal of this, where γ is the surface tension of the fluid, ρ its density, l the characteristic length, and v the velocity of the fluid or of waves in the fluid; also, the square root of either quantity.
1937O'Brien & Hickox Appl. Fluid Mech. v. 149 Generalized Representation of Weir Coefficients... The first three terms [in the coefficient of discharge] merely represent the geometrical similarity including the roughness. The other two are Weber's number and Reynolds' number. 1946H. Rouse Elem. Mech. of Fluids x. 322 The radical form of this ratio W = V/√ (σ/ρL) is known as the Weber number. 1977R. A. Duckworth Mech. of Fluids vii. 149 In ship testing, the influence of surface tension forces, for which the Weber number, (σ/ρV2l), provides the criterion for dynamic stability, may be ignored because..such forces are negligible compared with the viscous and gravitational forces. 1979A. L. Lydersen Fluid Flow & Heat Transfer ii. 39 Examples of force ratios are..inertia forces/surface forces = ..ρLV2/γ = We = Weber number. 1979Sci. Amer. Aug. 170/3 When the beaker is made to create water sheets in the middle range of Weber numbers, the ridge sends out curved waves. |