Flow channel angle

Influence of the Flow Channel Angle ot on the Gas Velocity at the Flooding Point uypi... 

Influence of Perforation and Flow Channel Angle In Packing Elements on the Single Flow Pressure Drop... 

Figure 3-8f. Influence of perforation on single-phase flow pressure drop of structured packings, type B1-500, produced by Montz with various flow channel angles and materials (sheet metal, steel mesh)...

In the case of random or structured packings with a flow channel angle of 45° (type Y), the following appHes ... 

Fig. 22. (a) Flow channel arrangement (b) flow channel triangular cross section where for angles of 90°, D q = ... 

Reynolds number for gas S = length of corrugation side Uge = effective velocity of gas Ug = superficial velocity of gas Ui = superficial velocity of liquid Ap = pressure drop per unit packed height e = packing void fraction 0 = angle of flow channel (from horizontal) fi = viscosity p = density... 

Angle of flow channel from horizontal (j) = For Equation 9-24, and Table 9-41, or Figure 9-90 or 9-91. 

For adiabatic, steady-state, and developed gas-liquid two-phase flow in a smooth pipe, assuming immiscible and incompressible phases, the essential variables are pu, pG, Pl, Pg, cr, dh, g, 9, Uls, and Uas, where subscripts L and G represent liquid and gas (or vapor), respectively, p is the density, p is the viscosity, cr is the surface tension, dh is the channel hydraulic diameter, 9 is the channel angle of inclination with respect to the gravity force, or the contact angle, g is the acceleration due to gravity, and Uls and Ugs are the liquid and gas superficial velocities, respectively. The independent dimensionless parameters can be chosen as Ap/pu (where Ap = Pl-Pg), and... 

Optimization of the flow paths of the multiplex head resulted in an additional reserve of capacity. The layout of the inlet angle of the extmders and the arrangement of the flow channels were made in such a way that necessitates the pressure loss to a miniumum. The benefit of this can be clearly seen in a reduced stock temperature. This lower temperature can be utilized to increase the throughput capacity. 

Rowe, D. S., andC. W. Angle, 1967, Cross FlowMixing between Parallel Flow Channels during Boiling Part II Measurement of Flow Enthalpy in Two Parallel Channels, BNWL-371 Pt II, Battelle Northwest Lab., Richland, WA. (App.)... 

As an illustration of the mass-transfer behavior in a Jeffery-Hamel channel, consider the following problem Assume that a portion of the wall of a long Jeffery-Hamel channel r < r < r0) is chemically active. For this illustration, assume a channel angle of a = 10° and a Schmidt number of Sc = 0.5. The fluid flows inward (converging direction) at two Reynolds numbers, Re = —10 and Re = —100. The nondimensional radius spans 1 < r < 1.5. Figure 5.4 shows the normalized mass-fraction profiles at several locations in the channel. The nondimensional velocity profiles / for these cases are shown in Fig. 5.3. 

The vapor Schmidt number, ScG and the effective gas velocity, ueff, are calculated by Eqs. (9.206) and (8.18), respectively. Values of the channel angle 0 and of the packing equivalent diameter, dare in Table 8.1. The liquid flow rate F is given by... 

Angle of inclination of the structured packing flow channel from the horizontal. Valuss listed in Table 8.1, degress... 

Systematic te.sts of wire netting inserts with diameters of 28 and 150 mm were made by Timofeev and Aerov [65] for vapour velocities from 0.07 to 0.47 m/s. They varied, above aU, the angle of inclination, the flow channel depth and the specific surface. 

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