Heterogeneous condensation and evaporation induced by an unsteady rarefaction wave and by the passage of a shock wave in a water-nitrogen mixture is studied. Time resolved measurements of modal droplet radius, droplets radius, droplet number density, pressure, and gas density are presented. Condensation on Cr2O3-particles of about 10 nm starts at a saturation ratio of 3.4. Typical droplet radii and droplet number densities are 1.5 µm and 1011 m-3. A shock wave with Mach number 1.36 causes full evaporation in 4 ms.
|Title of host publication||Current topics in shock waves : 17th international symposium on shock waves and shock tubes, Bethlehem, Pa., 1989|
|Place of Publication||New York|
|Publisher||American Institute of Physics|
|Publication status||Published - 1990|
|Name||AIP Conference Proceedings|