...Marcelo J. S. de Lemos; Paulo H. S. Carvalho This work presents a study of double-diffusive free convection in a porous square cavity under turbulent flow regime and with aiding drive. The thermal nonequilibrium model was employed to analyze the energy and mass transport across the enclosure...

... convection is taking place in a well or borehole. The effect of double diffusion is included. Both nonoscillatory and oscillatory situations are studied. throughflow thermal instability vertical cylinder double diffusion A problem of considerable interest to hydrologists is whether...

... in the transient state when the two buoyancy mechanisms are opposed. These results apply as well to the case of buoyancy-induced flows from a sphere generating simultaneously two different chemical components. 26 08 2010 15 02 2012 27 06 2012 29 06 2012 porous medium double diffusion...

... for a correct handling of the discontinuity of the macroscopic properties are analyzed. A particular class of problems dealing with thermal and double diffusive natural convection mechanisms in partially porous enclosures is presented, and it is shown that this configuration exhibits specific features in terms...

...E. Papanicolaou; V. Belessiotis The patterns arising from instabilities of double-diffusive natural convection due to vertical temperature T and solute concentration c gradients in confined enclosures are investigated numerically with the finite-volume method, for mixtures with Lewis numbers Le...

... conditions with immiscible fluids and double diffusive system. 13 Transient average Nusselt numbers for Ra = 1.3 s ˙ 10 9 , λ Q = 1.16 s ˙ 10 − 2 14 Computational domain of semicircular cavity for (a) immiscible layers L...

... achieved. Denser material would presumably be more resistant to flushing. A model for the rate of salt deposition by double-diffusive natural convection from aqueous salt solutions onto a cylinder heated beyond the solubility temperature of the salt...

... of the computations, which respond to the geometric parameters, fluid nature, thermofluid dynamic parameters and porous matrix characteristics. The collection of numerical results elucidates that the double diffusion zone varies and, besides it is strongly dependent on the coupling between the Prandtl and Lewis...

... reflecting actual ice melting conditions predicts, approximately, the transient melting mass, and the transient temperature/concentration decrease in the melting system. It is seen that the Sherwood number at the melting front is larger when compared with previous results concerning double diffusive...

... thermosolutal natural convection. Quantitative results about the time evolution of the double-diffusive multi-layers structure in the fluid phase are obtained. The formation of the first thermosolutal layer is analyzed with the help of numerical simulations. It is found that the mechanism responsible...