Competitive Double Diffusive Convection in a Kelvin–Voigt Fluid of Order One

Abstract We present a model for convection in Kelvin–Voigt fluid of order one when the layer is heated from below and simultaneously salted below, problem competitive double diffusion since heating promotes instability, but salting stabilizing. The instability surface threshold calculated this has complex shape. parameters play an important role acting as stabilizing agents oscillatory type. Quantitative values are displayed. nonlinear stability briefly addressed.