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Conductivity constant

The alternative to direct simulation of two-phase coexistence is the calculation of free energies or chemical potentials together with solution of the themiodynamic coexistence conditions. Thus, we must solve (say) pj (P) = PjjCT ) at constant T. A reasonable approach [173. 174. 175 and 176] is to conduct constant-AT J simulations, measure p by test-particle insertion, and also to note that the simulations give the derivative 3p/3 7 =(F)/A directly. Thus, conducting... [Pg.2269]

By applying the standard assumptions of constant thermal conductivities, constant holdup, and an ideal gas phase, Eqs. (21) can be rearranged to yield... [Pg.28]

Capillary conductivity constants are difficult to determine since slight disturbances of the soil structure have a marked effect upon its value. Gardner s results for Greenville soil are given in Table 63. The first three values indicate that there is an optimum porosity for capillary flow. [Pg.317]

We presume negligible axial heat conduction, constant wall temperature i90 and a constant temperature i9a of the fluid at the inlet of the tube. All material properties are temperature independent. [Pg.350]

Equation (11.1) is essentially a solution of Eq. (11.7) and is based on a few assumptions and simplifications, e.g., no axial heat conduction, constant average heat conductivity and specific heat, constant heat source, steady-state heat transfer, one-dimensional (radial) heat flux, cylindrical geometry in the waste and in the surrounding material, e.g., salt, and no heat source in the salt. [Pg.583]

EMPIRICAL EQUATIONS FOR CAKE RESISTANCE. By conducting constant-pressure experiments at various pressure drops, the variation of a with Ap may be found. If a is independent of Ap, the sludge is incompressible. Ordinarily a... [Pg.1020]

Escobedo and de Pablo have proposed some of the most interesting extensions of the method. They have pointed out [49] that the simulation of polymeric systems is often more troubled by the requirements of pressure equilibration than by chemical potential equilibration—that volume changes are more problematic than particle insertions if configurational-bias or expanded-ensemble methods are applied to the latter. Consequently, they turned the GDI method around and conducted constant-volume phase-coexistence simulations in the temperature-chemical potential plane, with the pressure equality satisfied by construction of an appropriate Cla-peyron equation [i.e., they take the pressure as 0 of Eq. (3.3)]. They demonstrated the method [49] for vapor-liquid coexistence of square-well octamers, and have recently shown that the extension permits coexistence for lattice models to be examined in a very simple manner [71]. [Pg.433]

American Society for Testing and Materials. "Standard Practice for Conducting Constant-Amplituo Axial Fatigue Tests of Metallic Materials," E466-82. 1969 Annuat Book of ASTM Standards. Vcl. 03.01, pp. 539-543. [Pg.382]

This series of products possess low density, high specific surface area, high porosity ratio, light blue translucent particles or monoliths. They have low thermal conduction constant, good insulation property, strong adsorptive ability, are environment friendly, nontoxic, fireproof and noncorrosive, with no toxicity to human, and can be widely applied as functional structural interlayer, filling layer and composite layer for thermal insulation and preservation, air purification and water treatment (Figures 40.11 and 40.12). [Pg.872]

K thermal conductivity constant for nonlinear parameter u - unit irreducible tensorial operators of rank A (=2,4, 6)... [Pg.509]

Experiments to characterize high cycle CF life according to the Basquin Law (Eq 1) follow from ASTM standards for metals in moist air (see ASTM E 466, Practice for Conducting Constant Amplitude Fatigue Tests of Metallic Materials and E 468, Practice for Presentation of Constant AmpUtude Fatigue Test Results for Metallic Materials). Such methods were detailed for steels and aluminum alloys in aqueous chloride solutions [38,39,57-59,69,79,80], Typical data are presented in Figs. 2, 11, and 12. [Pg.310]

One way to obtain long-term information is through the use of the time-temperature-superposition principle detailed in Chapter 7. Indeed, J. Lohr, (1965) (the California wine maker) while at the NASA Ames Research Center conducted constant strain rate tests from 0.003 to 300 min and from 15° C above the glass transition temperature to 100° C below the glass transition temperature to produce yield stress master curves for poly(methyl methacrylate), polystyrene, polyvinyl chloride, and polyethylene terephthalate. It should not be surprising that time or rate dependent yield (rupture) stress master curves can be developed as yield (rupture) is a single point on a correctly determined isochronous stress-strain curve. Whether linear or nonlinear, the stress is related to the strain through a modulus function at the yield point (mpture) location. As a result, a time dependent master curve for yield, rupture, or other failure parameters should be possible in the same way that a master curve of modulus is possible as demonstrated in Chapter 7 and 10. [Pg.393]

In a typical DSC, measuring with 1% precision, it takes under optimum conditions 0.5 minutes to reach steady state after starting. What is K, the conductivity constant of the cell (10 K/min heating rate, 10 mg sample, 50 mJ/K sample holder heat capacity, use equations derived in Fig. 4.16.)... [Pg.210]

Inspection of the products with tests conducted constantly by independent authorized institutes. [Pg.117]

A simple electrolytic refinery consists of the following parts (<7) the cells, (b) an electrolyte storage and circulation system which may also include a purification system, (c) equipment for slime recovery and (d) cranes for handling the electrodes. The cell itself is usually a rectangular tank made of suitably resistant material and the electrolyte usually contains several addition agents to promote anodic dissolution, conductivity, constant acidity or smooth adherent deposits. These are the same kinds of addition agents used in electrodeposition. It is very important to obtain pure cathodes that are free of scale, lumps and nodules because often the cathodes are sold directly. [Pg.216]

Saturated hydraulic conductivity Constant head soil core... [Pg.33]


See other pages where Conductivity constant is mentioned: [Pg.82]    [Pg.199]    [Pg.199]    [Pg.326]    [Pg.77]    [Pg.117]    [Pg.239]    [Pg.292]    [Pg.796]    [Pg.264]    [Pg.78]    [Pg.154]    [Pg.147]    [Pg.559]    [Pg.202]   
See also in sourсe #XX -- [ Pg.77 ]




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