Inertia centrifugal

To determine the velocities in the cylindrical coordinate system (CCS), the momentum equation has to be expressed in cylindrical coordinates. Again, the flow is assumed to be in steady state inertia, centrifugal, and gravitational forces are assumed negligible and the fluid viscosity constant. For the angular component this can be written as ... 

Applications. Molecules couple to an electromagnetic field through their electric dipoles, so only those having a permanent dipole moment exhibit significant rotational spectra. For such species, microwave spectroscopy yields highly precise moments of inertia and details of centrifugal... 

For determination of the aerodynamic diameters of particles, the most commonly apphcable methods for particle-size analysis are those based on inertia aerosol centrifuges, cyclones, and inertial impactors (Lundgren et al.. Aerosol Measurement, University of Florida, Gainesville, 1979 and Liu, Fine Paiiicles—Aerosol Generation, Measurement, Sampling, and Analysis, Academic, New York, 1976). Impactors are the most commonly used. Nevertheless, impactor measurements are subject to numerous errors [Rao and Whitby, Am. Ind. Hyg. A.s.soc.]., 38, 174 (1977) Marple and WiUeke, "Inertial Impactors, in Lundgren et al.. Aerosol Measurement and Fuchs, "Aerosol Impactors, in Shaw, Fundamentals of Aerosol Sci-... 

Effect of Fluid Viscosity and Inertia The dynamic effect of viscosity on a rotating liquid slurry as found in a sedimenting centrifuge is confined in veiy thin fluid layers, known as Ekman layers. These layers are adjacent to rotating surfaces which are perpendicular to the axis of rotation, such as bowl heads, flanges, and conveyor blades, etc. The thickness of the Ekman layer 6 is of the order... 

A centrifugal compressor driven through V-belts at a speed of 4500 r.p.m. having the torque curve as shown in Figure 2.18 and a moment of inertia /WK of 2.50 kgm employs a squirrel cage motor with the following parameters ... 

A widely used type of dust-collection equipment is the cyclone separator. A cyclone is essentially a settling chamber in which gravitational acceleration is replaced by centrifugal acceleration. Dust-laden air or gas enters a cylindrical or conical chamber tangentially at one or more points and leaves through a central opening. The dust particles, by virtue of their inertia, tend to move toward the outside separator wall from where they are... 

Cyclonic filters are a primary means of removing bulk particulates from gas streams. They rely on centrifugal force to separate solids from the gas by directing the gas flow into a circular path. Because of inertia, the particulates are unable to follow the same path and are separated from the gas... 

It is seen in Chapter 3 that, as a particle moves outwards towards the walls of the bowl of a centrifuge, the accelerating force progressively increases and therefore the particle never reaches an equilibrium velocity as is the case in the gravitational field. Neglecting the inertia of the particle, then ... 

Arming of fuzes can be accomplished by centrifugal force and/or inertia(setback). 

The manifold of energy levels for small J then has the appearance shown in Fig. 7. In higher approximation it would be necessary to take account of centrifugal distortion which causes the effective moments of inertia to increase slightly with J. For highly asymmetric tops the evaluation of the energy levels is difficult but approximate values can be interpolated from published tables (Erlandsson, 1956 King ef al., 1943, 1949). 

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