The modeling of microfluidic processes. Account of the surface forces

We consider the features of the surface tension forces in microfluidic. Given boundary conditions on the interfaces between immiscible fluids, and liquids and solids taking into account the surface pressure. We also consider the effect of mass transfer along the interface of two media, arising due to the presence of surface tension gradient (Marangoni effect), take into account the influence of temperature on surface tension forces. The algorithm, allowing estimating the coefficient of surface tension on the boundary solid-liquid with changes in temperature is given. Considered the capillary instability of the Rayleigh-Plateau. Emphasizes the importance of these aspects in the creation of a real microfluidic models using computing packages and physical models in the interests of scientific instrumentation.