EXPERIMENT TO MEASURE DENSITY FLOW FIELD IN A WATER TANK BY PIV

Abstract

We are developing a unified analysis method for the surrounding airflow field and volcanic ejecta during eruptions to predict and forecast the dispersal and diffusion of volcanic ejecta by numerical simulation. In order to obtain data on the flow velocity field for performance and accuracy verification of the created calculation program, a water tank experiment apparatus was built up to reproduce the density flow around a topographic model of the volcano. Using the tank, density flow mixed with tracer particles was reproduced around the volcano model to confirm that the velocity field can be measured using the PIV measurement system.