Eckert number


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Eckert number

[′ek·ərt ‚nəm·bər]
(physics)
A dimensionless group used in the study of compressible flow around a body, equal to the square of the fluid velocity far from the body divided by the product of the specific heat of the fluid at constant temperature and the difference between the temperatures of the fluid and the body. Symbolized NE . Also known as Dulong number.
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References in periodicals archive ?
Also the velocity in the boundary layer increases with the increase of Eckert number.
14 shows the influence of Eckert number on entropy generation number, [N.
14 that at [eta] = 0 when the Eckert number increases from 0.
Furthermore, the Eckert number (viscous dissipation parameter) is the measure of the heat produced by friction.
The influences of the magnetic parameter, the thermal radiation parameter, the non-Newtonian Prandtl number and the Eckert number on the velocity, temperature, the local skin-friction coefficient and the local Nusselt number have been studied in detail.
1] are respectively the Prandtl number, Grashof number, Sink strength, Eckert number, Hartmann number, co-efficient of thermal diffusivity and non-Newtonian parameter.
r], Hartmann number M, sink strength S, Grashoff number G and Eckert number [E.
0] increases for the increase of Grashoff number G (Figures 2 and 5) and Eckert number [E.
m] is the Grashof number for mass transfer, E is the Eckert number, M is the Hartmann number, P is the Prandtl number, [S.
Figures 1, 2 and 3 exhibit the variation of the velocity field u versus y under the effect of Soret number So, Hartmann number M and Eckert number E.
5 shows the effect of Eckert number with Richardson number on velocity profile.
Also, in nanofluid the decrease in magnetic parameter and increase in Eckert number cause better thermal conditions.