Two Component Benard-Marangoni Convection in a Composite System Subjected to Variable Heat Source

Double diffusive convection is the phenomena that describes driven by two differ-ent densities which have different rates of diffusion. A comparison temperature boundaries when i) both surfaces are set at adiabatic temperature, and ii)upper free surface lower rigid isothermal cases, on tension double in a horizontal composite layer studied analytically using exact method. For cases ii), thermal Marangoni number (Tmn) determined, eigen value, for upper velocity boundary conditions. The results indicate given system fluid dominant adiabatic-isothermal more stable compare to adiabatic-adiabatic condition.