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Slip factor

Stabler, A.F., The Slip Factor of a Radial Bladed Centrifugal Compressor, ASME Paper No. 64-GTP-l. [Pg.274]

Wiesner, F.J., A Review of Slip Factors for Centrigual Impellers, Journal of Engineering for Power, ASME Trans., October 1967, p. 558. [Pg.274]

Substituting into Equation 5.4 yields the following slip factor equation ... [Pg.154]

The actual work input coefficient, is written by taking the ideal work input coefficient, Equation 5.1, and modifying by the addition of the slip factor, SF. The geometric relationship of the Stodola slip function is shown in Figure 5-23. [Pg.155]

In Eq. (9.90), C2 is the tangential component of the absolute velocity at the exit if the flow is exactly in the blade direction. Since the slip factor is ieSs than 1, the total pressure increase will decrease according to Eq. ( 9.72) for the same impeller and isentropic flow. [Pg.752]

If the flow is isentropic but does not follow the blade shape exactly, then the slip factor is smaller than 1, and this will directly affect what is shown in Fig. 9.40. Denoting the total pressure rise when the flow does not follow the blade shape and calculating the slip factor from Eq. (9.90) give... [Pg.756]

Figure 9.42 shows the typical characteristic curve of a centrifugal fan, where the blades are backward curved. The figure also shows the theoretical characteristic curve when the slip factor is 1 and when it is smaller than 1. Characteristic curves for a real fan are closer to the isentropic one at the design point. At this point the efficiency is maximum. [Pg.758]

Interface slip factor a (m ). This factor is defined as a phenomenological parameter characterizing the lubrication behavior on the phase interface as a slide occurs. [Pg.686]

As demonstrated, Eq. (7) gives complete information on how the weight fraction influences the blend viscosity by taking into account the critical stress ratio A, the viscosity ratio 8, and a parameter K, which involves the influences of the phenomenological interface slip factor a or ao, the interlayer number m, and the d/Ro ratio. It was also assumed in introducing this function that (1) the TLCP phase is well dispersed, fibrillated, aligned, and just forms one interlayer (2) there is no elastic effect (3) there is no phase inversion of any kind (4) A < 1.0 and (5) a steady-state capillary flow under a constant pressure or a constant wall shear stress. [Pg.687]

The riser pressure drop is related mainly to the catalyst circulation rate and the slip factor. Catalyst circulation rate is largely a function of the oil feed rate, the reactor temperature, and the feed temperature. Increasing the feed rate, reactor temperature, or lowering the feed temperature will increase the pressure drop across the riser. [Pg.242]

Slip factor is defined as the ratio of catalyst residence time in the riser to the hydrocarbon vapor residence time. Some of the factors affecting the slip factor are circulation rate, riser diameter/geometry, and riser velocity. [Pg.242]

Slip Factor. The ratio of vapor velocity to catalyst velocity. [Pg.349]

Slip Factor is the ratio of catalyst residence time to hydrocarbon vapors residence time in the riser. [Pg.361]

In a homogeneous fluid the frictional resistance a particle experiences depends largely on its size and shape and on the nature of the solvent. For large molecules, where the slip factor (tendency of solvent molecules to adhere to solute) approaches infinity, the frictional resistance is... [Pg.611]

Patience et al. (1992) developed a dimensionless correlation for the mean slip factor between the gas and solid by using solid suspension data from various small laboratory beds. The proposed correlation relates the slip to the Froude number based on the bed diameter. It remains to be seen if the correlation will hold at Froude numbers typical of large beds and if other dimensionless factors are important. [Pg.25]

Radioactive tracers [14] are a useful tool to measure unit parameters such as residence times and distribution of the catalyst and vapors in the reactor, stripper, or regenerator. Bypassing can be detected, slip factors calculated and dilute phase residence times are examples of useful calculations that can point the way to future modifications. This technology is also useful for detecting and analyzing equipment malfunctions. Plugged distributors, erratic standpipes, and main fractionator problems such as salt deposits or flooding can be detected with tracers. [Pg.98]

An extension, by accounting for gas-liquid interfacial interactions via velocity-and shear-slip factors was then proposed by Al-Dahhan et al. [42] to lift the model disparities observed for conditions of high gas throughputs and elevated pressures. Later, Iliuta et al. [43] derived more general slip-corrective correlations. [Pg.272]

Nevertheless, the generalized slit model needs a preliminary determination of the two Ergun constants from single-phase flow experiments, which is not easily to perform in the industrial practice, and of the two slip factors, which is unfortunately more difficult. [Pg.273]

The values of the calculated slip factors are listed in Table 4. [Pg.178]

High ratios of gas (or vapor) to catalyst volumes, and velocities of 15 to 40 ft./second, are used in carrier lines in order to maintain the catalyst in dilute suspension and to prevent accumulation of stagnant catalyst at any point (53). The net flow rates of catalyst and vapors in the carrier lines typically correspond to an aerated bulk density of the order of 5 Ib./cu. ft. (68). However, the actual density is about twice the calculated value because of slip factor (105). [Pg.339]

Figure 8. Slip factor /(Kn) for a spherical particle of radius R versus Knudsen number X/R,... Figure 8. Slip factor /(Kn) for a spherical particle of radius R versus Knudsen number X/R,...
The ratio of the two velocities is known as slip or the slip factor... [Pg.478]

The volumetric quality e and the vapour content coincide when the slip factor is equal to one, i.e. when wG = wL, which then gives... [Pg.478]

If the slip factor can be set to s = 1, (homogeneous flow), then, according to (4.114), the volumetric vapour content will be... [Pg.481]


See other pages where Slip factor is mentioned: [Pg.241]    [Pg.243]    [Pg.154]    [Pg.154]    [Pg.752]    [Pg.754]    [Pg.686]    [Pg.703]    [Pg.163]    [Pg.80]    [Pg.162]    [Pg.218]    [Pg.217]    [Pg.704]    [Pg.1011]    [Pg.1300]    [Pg.13]    [Pg.159]    [Pg.160]    [Pg.935]   
See also in sourсe #XX -- [ Pg.25 ]

See also in sourсe #XX -- [ Pg.161 ]




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