Fluxes molar

Calculate the gas molar flux (molar flowrate per unit cross section) and liquid molar flux in lbmol/(ft h) ... [Pg.402]

Mass flow rate of particles to cylindrical collector per unit length of cylinder Mass flow rate of particles to spherical collector Mass flux Molar flux... [Pg.17]

Mass flux of species i Sum of mass fluxes Molar flux of species i Sum of molar fluxes... [Pg.96]

Diffusivity measures the tendency for a concentration gradient to dissipate to form a molar flux. The proportionality constant between the flux and the potential is called the diffusivity and is expressed in m /s. If a binary mixture of components A and B is considered, the molar flux of component A with respect to a reference plane through which the exchange is equimolar, is expressed as a function of the diffusivity and of the concentration gradient with respect to aji axis Ox perpendicular to the reference plane by the fpllqvving relatipn 6 /... [Pg.136]

Gibbs free energy or Gibbs molar free energy molar flow of gas phase acceleration of gravity enthalpy, molar enthalpy, weight enthalpy Henry s constant Planck s constant height horsepower radiation intensity molar flux... [Pg.494]

But Che molar flux of species r per unit cross-sectional area is given by... [Pg.8]

The cross-sectional average molar fluxes are defined by... [Pg.31]

Now consider Che cross-sectional average N of the total molar flux and the cross-sectional average diffusion fluxes J, defined by... [Pg.31]

In the first, motion is generated by composition gradients in the absence of any temperature or pressure gradient, in the second, motion is a consequence of pressure gradients alone, and in the third,both pressure and composition gradients are present but a constraint of zero net molar flux is imposed. These will be discussed in turn. [Pg.50]

At very low densities It Is quite easy Co give a theoretical description of thermal transpiration, alnce the classical theory of Knudsen screaming 9] can be extended to account for Che Influence of temperature gradients. For Isothermal flow through a straight capillary of circular cross-section, a well known calculation [9] gives the molar flux per unit cross-sectional area, N, In the form... [Pg.178]

Given the boundary condition (A.1.6) it is a straightforward matter to integrate the Navier Scokes equations in a cylindrical tube, and hence to find the molar flux N per unit cross-sectional area. The result, which was also obtained by Maxwell, is... [Pg.180]

A simple treatment is stiU possible if it may be assumed that the flux of the component of interest A through the interface stays in a constant proportion to the total molar transfer through the interface over the entire tower ... [Pg.28]

Gm Molar gas-phase mass flux kmol/(s-m ) (lbmol)/(h-fF)... [Pg.589]

The first equahty (on the left-hand side) corresponds to the molar flux with respect to the volume average velocity while the equahty in the center represents the molar flux with respect to the molar average velocity and the one on the right is the mass flux with respect to the mass average velocity These must be used with consistent flux expressions for fixed coordinates and for Nc components, such as ... [Pg.592]

J mass-transfer flux relative to molar average velocity, mol/(m -s) ... [Pg.1495]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...