mobility tensor

mobility tensor

[mō′bil·əd·ē ‚ten·sər]
(plasma physics)
A second-rank tensor whose product with the electric field vector for a plane wave in a plasma gives a vector equal to the average velocity of electrons or ions; components of both vectors are in phasor notation.
References in periodicals archive ?
Where [LAMBDA] is a fourth-order tensor, called the mobility tensor which is essentially the inverse of the relaxation time of the polymer fluids, [rho] is the fluid density, Q is anisotropic viscosity matrix that is related to viscous dissipation, L is coupling parameter between the velocity gradient field and the structural tensor field, C is second-order conformation tensor which is symmetric, and it has nine components as follow:
The general expression for the mobility tensor presented by Beris and Edwards as follows [22]:
where [LAMBDA] is a fourth order tensor, called the mobility tensor which is essentially the inverse of the relaxation time of the polymer fluids, c is the conformation tensor, [rho] is the fluid density, Q is anisotropic viscosity matrix that is related to viscous dissipation, L is coupling parameter between the velocity gradient field and the structural tensor field, and A is Helmholtz free energy function represented by a combination of invariants of the conformation tensor, which can be written as follows based on the Hookean model:
Kanvisi and Ramazani have studied the effects of the mobility tensors on the shear rate distribution, viscosity distribution, and the first and second normal stress differences.
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