A methodology for momentum flux measurements in two-phase blast flows

Modern diagnostics for air blast waves have been developed to the point that they are sufficiently accurate and robust to capture most blast phenomena of interest (most often pressure). Two-phase blast flows also transport momentum and energy in a non-gas phase and, as such, the properties of this second phase must be accounted for in estimating flowfield parameters. Standard air blast diagnostics are not sufficient to capture these effects and the diagnostics that do exist for multiphase flows normally rely on steady conditions or sampling periods of at least a few milliseconds. The extreme transients associated with multiphase blast flows (microsecond-scale) preclude the use of such techniques. For this reason, novel approaches are required in order to capture the total momentum and energy flux in two-phase blast flows. This paper outlines a novel suite of diagnostics and an analysis technique that allows for momentum flux measurements in two-phase blast flows.