Spherical Droplet Impingement on Flat Rigid Surface Non-Slip Boundary Condition.

摘要

The impact of spherical water drops upon a rigid non-slip plane is studied. The governing partial differential equations of compressible hydrodynamics neglecting body force,viscosity and surface tension are solved with a new Compressible-Cell-and-Marker numerical technique. Flow patterns,impact pressures,and velocities are found as a function of time. As the liquid boundary is free to deform,compression and rarefaction take place simultaneously after the first instant of impact. However,the net effect of compression is predominate during the early stages of impact,until the radial lateral flow velocity exceeds the impact velocity,after which the pressures attenuate. (Author)