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The relevant ones here are the Peclet number, Pe, and the Nahme-Griffith number, Na.
It is based on the assessment of the ratio of heat transfer by conduction to the rate of heat transfer by convection expressed by the Peclet number as described by Peters  and Kansa et al.
The groundwater flow can carry away the excessive heat accumulated in the ground effectively if the Peclet number is sufficiently large (Chiasson et al.
For both materials the BTCs became steeper as the speed of displacement increased and the Peclet number decreased in contrast to the behaviour in stable, vertical flow in which BTCs generally become steeper as speed of displacement decreases (discussed in the next section), indicating that segregation dominated the displacements.
e] H [phi] (11) Taking the derivatives of Equations (8) and (9), and substituting expressions for the derivatives (dt) and (dr) into Equation (2), and using an approximation for the pore volume given by Equation (11), we obtain the following: [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] (12) The above formulation identifies a non-dimensional group which may be termed as the Local Peclet number given by [NL.
Taking into account methodology of estimation using Peclet number [10, 11], one may state that in the process of nitrogen mass transfer in slag the share of molecular diffusion, in comparison with the convective one, is negligently small.
0,14] (5) where Pe is Peclet number, v is dynamic viscosity, [[eta].
the mean residence time ([Tau]) and Peclet number (Pe), were estimated by the least squares method.