Presentation Information
[2C05]Experimental and Numerical Study of the Vapor Explosion for a Multiple Droplet System(3) Development of a Vapor Explosion Analysis Method Based on an Interface Capturing Scheme
*Tomohiro Kamiya1, Hayate Ueda2, Makoto Asahara2 (1. JAEA, 2. Gifu Univ.)
Keywords:
Vapor explosion,Pressure wave,Interface capturing scheme
In a vapor explosion, molten material is dispersed in the water, and the pressure waves interact with the molten material and with other pressure waves, eventually forming the final pressure wave. Because such pressure wave propagation processes are complex, a detailed understanding through simulation is expected. The pressure waves originate from the rapid pressure increase caused by the abrupt phase change. Additionally, a vapor explosion involves a multiphase flow in which water, vapor, and molten material coexist, and it is necessary to handle the interfaces accurately. We modeled the pressure increase due to phase change and incorporated it into an interface capturing scheme suitable for detailed analysis. We will report the results of a single droplet vapor explosion simulation.