Presentation Information
[2C04]Experimental and Numerical Study of the Vapor Explosion for a Multiple Droplet System(2) Experimental Study on Vapor Explosions Induced by a Single Molten Metal Droplet
*Hayate Ueda1, Tomohiro Kamiya2, Makoto Asahara1 (1. Gifu Univ., 2. JAEA)
Keywords:
Vapor explosions experiment,Pressure wave,Visualization
In a vapor explosion caused by molten metal penetrating into water, shock and pressure waves with a rapid pressure rise are generated and can damage the surroundings. When the vapor film collapses, multiple molten metal fragments can become sources of pressure waves, and their interactions are expected to amplify the final pressure wave. Because these pressure-wave generation and propagation processes are complex, it is important to clarify the mechanism of the initial pressure wave emitted from a single molten-metal droplet as a basis for accurate prediction and evaluation. In this study, we focus on vapor explosions triggered by a single molten-metal droplet in water. We will present results on the visualization of the single-droplet vapor explosion behavior and on measurements of the associated pressure waves.