Effect of basic temperature gradients on Marangoni convection in ferromagnetic fluids

The effect of different basic temperature gradients on the onset of Marangoni ferroconvection is studied. The resulting eigenvalue problem is solved by Galerkin technique for the lower boundary rigid and either conducting or adiabatic and the upper boundary at which the surface tension acts is free adiabatic. The results indicate that the stability of Marangoni ferroconvection is significantly affected by basic temperature gradients and the mechanism for suppressing or augmenting the same is discussed in detail. It is found that, the results obtained under the limiting conditions compare well with the existing ones.