Experiments on axisymmetric oscillating water jets: absorption of ammonia in presence of n-pentanol

The competing effects of pentanol adsorption and ammonia absorption on the shape of axisymmetric oscillating water jets are studied experimentally and interpreted qualitatively. While there is no significant influence of the absorption process on pure water jets, considerable change in jet length and deviation from sinusoidal evolution of surface oscillation in presence of n-pentanol is observed, accompanied by an increase in absorption rate. Hence dependence of jet shape on interfacial convection is shown. The effects of pentanol adsorption, surface elasticity of a pentanol surface film and nonuniform velocity distribution on jet stability are discussed quantitatively.