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Number Ohnesorge

The first term is essentially the reciprocal of the Weber number and the second term is a function of the Ohnesorge number. Equation 13 may be invaHd for airblast atomizers operating at high pressures, >1 MPa (>10 atm), or with high viscosity Hquids. [Pg.333]

Ohmic losses, in fuel cell voltages, 12 207 Ohmic polarization, batteries, 3 425—426 Ohnesorge number, 23 183, 190 Oil absorption, by silica, 22 371 Oil additives... [Pg.643]

To determine if a droplet experiences spreading or splashing when it impinges onto a liquid film on a solid surface, the correlation between the Weber number and Ohnesorge number derived by Walzel[398] may be used ... [Pg.237]

Recently, Razumovskid441 studied the shape of drops, and satellite droplets formed by forced capillary breakup of a liquid jet. On the basis of an instability analysis, Teng et al.[442] derived a simple equation for the prediction of droplet size from the breakup of cylindrical liquid jets at low-velocities. The equation correlates droplet size to a modified Ohnesorge number, and is applicable to both liquid-in-liquid, and liquid-in-gas jets of Newtonian or non-Newtonian fluids. Yamane et al.[439] measured Sauter mean diameter, and air-entrainment characteristics of non-evaporating unsteady dense sprays by means of an image analysis technique which uses an instantaneous shadow picture of the spray and amount of injected fuel. Influences of injection pressure and ambient gas density on the Sauter mean diameter and air entrainment were investigated parametrically. An empirical equation for the Sauter mean diameter was proposed based on a dimensionless analysis of the experimental results. It was indicated that the Sauter mean diameter decreases with an increase in injection pressure and a decrease in ambient gas density. It was also shown that the air-entrainment characteristics can be predicted from the quasi-steady jet theory. [Pg.257]

Ohnesorge Number Oh = pL/(pLoD0f5 Compare internal viscosity force to surface tension force Walzel [398]... [Pg.306]

If you wish you could borrow relief from your sorrow, the Ohnesorge number we ll mention,... [Pg.415]

Ohnesorge number z P viscous force Weber number... [Pg.50]

In addition, the Ohnesorge number describes the influence of the viscosity of the liquid. [Pg.248]

Archimedes number Bingham number Bingham Reynolds number Blake number Bond number Capillary number Cauchy number Cavitation number Dean number Deborah number Drag coefficient Elasticity number Euler number Fanning friction factor Froude number Densometric Froude number Hedstrom number Hodgson number Mach number Newton number Ohnesorge number Peclet number Pipeline parameter... [Pg.500]

Introduce a dimensionless parameter called the Ohnesorge number... [Pg.341]

Ohnesorge number represents fluid properties. Low Oh (Vz) numbers represent either a low viscous or a high surface tension fluid. When the gravitational effects are important, the ratio of the gravitational forces to surface tension forces is represented by the Bond number defined as ... [Pg.7]

An infinitely long cylindrical Newtonian liquid jet, is disturbed with a spatially harmonic surface displacement of a cosine shape R = a — Cocoskz, where k = Ina/X, and a is determined such that the volume of the jet is kept constant when the initial amplitude is changed. Therefore, a = (1 — Co/2) - The dynamics of this jet due to capillary forces was investigated for various values of initial disturbance wave number k, and initial amplitude i o> and of the jet Ohnesorge number, Oh. [Pg.23]

Figure 5.2 presents results from a numerical solution of the Navier Stokes equations for a damping osciUatiOTi of a viscous droplet released from a third-mode shape, n = 3, by Mashayek and Ashgriz [16]. This figure is for a droplet with an Ohnesorge number of Oh = 0.01, and the initial amplitude of 0.5, where Oh = pKpaRy. ... [Pg.129]

Keywords Bag breakup Breakup mode Breakup time Catastrophic breakup Fragments Fragment size distribution Initiation time Multimode breakup Newtonian drops Non-Newtonian drops Ohnesorge number (Oh) Secondary atomization Secondary breakup Sheet-thinning breakup Total breakup time Vibrational breakup Weber number (We)... [Pg.145]

Drop viscosity hinders deformation and also dissipates energy supplied by aerodynamic forces. Both factors reduce the likelihood of fragmentation. This is accounted for by the Ohnesorge number, which represents the ratio of drop viscous forces to surface tension forces ... [Pg.146]

Fig. 7.3 Nomogram for binary collisions of equal-sized droplets for constant Ohnesorge number [33] (Reprinted with permission from [33], Copyright 1997 American Institute of Physics. Adapted from [34])... Fig. 7.3 Nomogram for binary collisions of equal-sized droplets for constant Ohnesorge number [33] (Reprinted with permission from [33], Copyright 1997 American Institute of Physics. Adapted from [34])...
See other pages where Number Ohnesorge is mentioned: [Pg.130]    [Pg.134]    [Pg.204]    [Pg.237]    [Pg.321]    [Pg.43]    [Pg.45]    [Pg.49]    [Pg.36]    [Pg.120]    [Pg.122]    [Pg.126]    [Pg.35]    [Pg.60]    [Pg.126]    [Pg.114]    [Pg.322]    [Pg.324]    [Pg.799]    [Pg.180]    [Pg.6]    [Pg.22]    [Pg.31]    [Pg.160]    [Pg.164]    [Pg.185]    [Pg.221]   
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See also in sourсe #XX -- [ Pg.19 ]



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Ohnesorge number correlations

Ohnesorge number function

Ohnesorge number liquid

Ohnesorge number modified

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