Solid-Liquid Contact Combustion

Equilibrium gas–liquid–solid contact angle from density-functional theory

We investigate the equilibrium of a fluid in contact with a solid boundary through a density-functional theory. Depending on the conditions, the fluid can be in one phase, gas or liquid, or two phases, while the wall induces an external field acting on the fluid particles. We first examine the case of a liquid film in contact with the wall. We construct bifurcation diagrams for the film thickne...

Liquid Droplet in Contact with a Solid Surface

A liquid droplet in contact with a solid surface was simulated by the molecular dynamics method, in order to study the microscopic aspects of the liquid-solid contact phenomena and phase change heat transfer. Measured ‘contact angle’ was well correlated by the depth of the integrated potential of the surface. The layered liquid structure near the surface was also explained with the integrated p...

Nanoscale Fluid Structure of Liquid-solid-vapour Contact Lines for a Wide Range of Contact Angles

We study the nanoscale behaviour of the density of a simple fluid in the vicinity of an equilibrium contact line for a wide range of Young contact angles θY ∈ [40 ◦, 135◦]. Cuts of the density profile at various positions along the contact line are presented, unravelling the apparent step-wise increase of the film height profile observed in contour plots of the density. The density profile is e...

Combustion Mechanisms of Solid Propellants

Solid-liquid separation after liquid-liquid extraction.

A low-melting solid is used as organic solvent for liquid-liquid extraction at elevated temperatures followed by solidification and decantation of the aqueous phase.