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1 International Journal of Applied Mechanics and Engineering

1 2011

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Double - diffusive electro-convection in aqueous solutions of polymeric liquids

Siddheshwar P. G., Srikrishna C. V.

International Journal of Applied Mechanics and Engineering

2011

Vol. 16, no 2

543-555

The linear stability analysis of double-diffusive electroconvection in an aqueous- solution of a polymeric liquid is performed when a uniform DC electric field is applied. The polymeric liquid is assumed to be viscoelastic and the viscoelastic correction to the momentum equation is effected by considering the Jeffry constitutive equation. The eigenvalue at the onset of convection is obtained by employing the Rayleigh-Ritz technique for isothermal and isohaline boundary combination. The results of the study reveal that the strengths of the electric field and salinity delay the onset of convection. The classical results of the effect of the viscoelastic parameter on the onset of convection are found to be unaltered by the inducted electric field. The problem has industrial applications.