Dufour number

Dufour number

[¦dü·fȯr ‚nəm·bər]
(thermodynamics)
A dimensionless number used in studying thermodiffusion, equal to the increase in enthalpy of a unit mass during isothermal mass transfer divided by the enthalpy of a unit mass of mixture. Symbol Du2.
References in periodicals archive ?
where Ec is the Eckert number, Pr is the Prandtl number, Sc is the Schmidt number, Sr is the Soret number, Du is the Dufour number, M is the Magnetic field parameter, Gr is the thermal Grashof number, Gc is the Solutal Grashof number, k is the porous parameter, [b.
Figures 11(a) and 11(b) graphically show the influence of Dufour number Du on the velocity and temperature profiles, respectively.
1) Velocity profiles increased due to increase in thermal Grashof number, solutal Grashof number, porous parameter, Eckert number, Soret number, Dufour number, and dimensionless time while it decreased due to increase in magnetic parameter and suction parameter.
2) An increase in temperature profiles is a function of an increase in thermal conductivity, suction parameter, Eckert number, joule-heating parameter, Dufour number, and dimensionless time while it decreased due to increase in Soret number.
The values of Dufour number (Df) and Soret number (Sr) are chosen in such a way that their product is constant provided that the mean temperature [T.
The effects of Soret and Dufour numbers on the velocity field are shown in Fig.
The effects of Soret and Dufour numbers on the temperature field are shown in Fig.
The effects of Soret and Dufour numbers on the concentration field are shown in Fig.
Aly, "Effects of chemical reaction and thermal stratification on MHD free convective heat and mass transfer over a vertical stretching surface embedded in a porous media considering Soret and Dufour numbers," Chemical Engineering Journal, vol.