Investigation of the partial segregation of the components in low density supersonic jets by means of molecular beam sampling technique. I. number density distribution of the components perpendicular to the jet axis for binary systems

Abstract

AbstractThe number density distributions of the components in binary systems were measured perpendicular to the jet axis in low density supersonic jets by means of molecular beam sampling technique. The distributions of the segregation parameters perpendicular to the jet axis were evaluated for different distances from the nozzle throat, different nozzle diameters, stagnation pressures and gas mixtures. At high source Reynolds numbers the heavy component is enriched along the axis of the jet. For low Reynolds numbers a ring‐shaped structure of the jet with alternating enriching of the heavy component as function of the distance from the jet axis is found.Addition of heavy component to the light gas causes an increase of its perpendicular temperature in the jet.The mechanism of the segregation is discussed.