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Finite length

The operation for which A X is an arbitrary finite length, obviously has the same effect on a... [Pg.164]

Danckwerts [Jnd. Eng. Chem., 42, 1460(1951)] proposed an extension of the penetration theoiy, called the surface renewal theoiy, which allows for the eddy motion in the liquid to bring masses of fresh liquid continually from the interior to the surface, where they are exposed to the gas for finite lengths of time before being replaced. In his development, Danckwerts assumed that every element of fluid has an equal chance of being replaced regardless of its age. The Danck-werts model gives... [Pg.604]

The exit Mach number Mo may not exceed unity Mo = 1 corresponds to choked flow sonic conditions may exist only at the pipe exit. The mass velocity G in the charts is the choked mass flux for an isentropic nozzle given by Eq. (6-118). For a pipe of finite length. [Pg.649]

Computer simulation is an experimental science to the extent that calculated dynamic properties are subject to systematic and statistical errors. Sources of systematic error consist of size dependence, poor equilibration, non-bond interaction cutoff, etc. These should, of course, be estimated and eliminated where possible. It is also essential to obtain an estimate of the statistical significance of the results. Simulation averages are taken over runs of finite length, and this is the main cause of statistical imprecision in the mean values so obtained. [Pg.56]

The 8 functions limit the non-vanishing regions of / -space to discrete layer planes perpendicular to k. These layer planes are infinitely sharp, because the helix was assumed to be infinitely long. Limiting the summation to a finite length of the helix would lead to broadening of these layer planes. [Pg.22]

In the following sections, we first show the phonon dispersion relation of CNTs, and then the calculated results for the Raman intensity of a CNT are shown as a function of the polarisation direction. We also show the Raman calculation for a finite length of CNT, which is relevant to the intermediate frequency region. The enhancement of the Raman intensity is observed as a function of laser frequency when the laser excitation frequency is close to a frequency of high optical absorption, and this effect is called the resonant Raman effect. The observed Raman spectra of SWCNTs show resonant-Raman effects [5, 8], which will be given in the last section. [Pg.52]

Raman modes. Such a symmetry analysis will also be useful for identifying the chirality of CNTs. The spectral features in the intermediate frequency range may come from the finite length of CNTs. The resonant Raman intensity may reflect differences in the DOS between metallic and semiconducting CNTs. [Pg.61]

Simulation refer to models involving a statistical component, i.e. the results are obtained with an uncertainty arising from the finite length of the simulation. A typical application is simulation of a liquid phase, i.e. a detailed description of a solvent or solution. [Pg.373]

Universality in Unimodal Maps A seminal work on the 2-symbol dynamics of one-dimensional unimodal mappings due to Metropolis, Stein Stein [metro73]. Specifically, they studied the iterates of various mappings within periodic windows, labeling the attractor sequences by strings of the form RLLRL , where R and L indicate whether f xo) falls to the right or left of xq, respectively. Each periodic sequence therefore corresponds to a unique finite length word made up of R s and L s. [Pg.197]

Table 8.6 traces the evolution of the approximating CA rules as e increases from 0 to 1 for 2 < s < 3. We see that as e increases, only 7 of the 32 possible rules are actually visited. Nonetheless, even at this crude first order approximation, a remnant of the CML s transition to spatiotemporal intermittency remains. In particular, there is a threshold value of e, = 2 — 4/s, that acts as a boundary point below which the approximating CA-rule is simple-periodic (class 1 or 2) and above which it is complex (class 3 or 4). The surprising fact is not that the CML s transition appears to bo approximated by the CA-rule path - after all, allowing for finite-length computer words, the CML itself is essentially just a very-high order CA... [Pg.404]

The Warner function has all the desired asymptotical characteristics, i.e. a linear dependence of f(r) on r at small deformation and a finite length Nlp in the limit of infinite force (Fig. 3). In a non-deterministic flow such as a turbulent flow, it was found useful to model f(r) with an anharmonic oscillator law which permits us to account for the deviation of f(r) from linearity in the intermediate range of chain deformation [34] ... [Pg.85]

Example 13.3 The conversion of a self-condensing reaction can be limited to give polymers with finite lengths. How does the polydispersity of these polymers compare with those in Example 13.2 where the reaction went to completion with imperfect stoichiometry Make the comparison at the same average chain length. [Pg.474]

The load on the wheel produces a contact area of finite length a. The distortion caused by the load is ignored in the brush model. This means that the above relation is really a shear relation. The fibers have a large compression stiffness and a small shear stiffness, which in fact is true for rubbers. The large contact length is created by the air inflation chamber of the tire. Solid mbber wheels bulge out. [Pg.706]

Comparison of two last equations allows us to determine the error that occurs when we replace a line of finite length with an infinitely long one, and then apply this result to a real elongated body. For instance, if the length of the line is 10 times greater than the distance from the observation point, this error is less than one-half percent. As follows from Fig. 4.5a for the vertical component of the field we have... [Pg.232]


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See also in sourсe #XX -- [ Pg.57 , Pg.84 , Pg.85 , Pg.101 ]




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