An Experimental Investigation of Water- Magma Phase Mingling in Sub-aqueous Volcanic Eruptions

在适当的条件下，火山岩浆与地表水之间的相互作用是爆炸性的;然而，火山学家对先决条件相混合缺乏基本的了解。为了研究这个问题，研究人员正在进行复杂的实验，同时采用粒子图像测速（PIV）和激光诱导荧光（LIF）。 混合机制将通过在不同的流动条件和几何形状下将相边界（来自LIF）与速度场（来自PIV）叠加来确定。 LIF和PIV图像在分束器和滤光器的帮助下在聚焦在单个图像平面上的单独相机上捕获。这项研究是由马萨诸塞州大学达特茅斯的机械工程教授彼得弗里德曼博士和罗得岛大学的火山学家史蒂夫凯里博士共同管理的。马萨诸塞州达特茅斯大学是一所州立大学，拥有年轻但有前途的研究生教育计划，为马萨诸塞州东南部的种族多样化社区服务。 该研究具有潜在的跨学科应用，包括核安全，金属加工和超导体的低温冷却。

Under appropriate conditions the interaction between volcanic magma and surface water is explosive; however, volcanologists lack a fundamental understanding about the prerequisite phase mingling. To study this problem, investigators are performing sophisticated experiments that simultaneously employ particle image velocimetry (PIV) and laser induced fluorescence (LIF). Mingling mechanisms will be determined by superposing phase boundaries (from LIF) with velocity fields (from PIV) under varying flow conditions and geometries. LIF and PIV images are captured on separate cameras focused on a single image plane with the aid of a beam splitter and optical filters.The research is a collaborative effort administered by Dr. Peter Friedman a mechanical engineering professor at the University of Massachusetts Dartmouth and Dr. Steve Carey, a volcanologist at the University of Rhode Island. The University of Massachusetts Dartmouth is a state university with a young but promising graduate education program serving the ethnically diverse communities of Southeastern Massachusetts. The research has potential cross-disciplinary applications including nuclear safety, metal processing, and cryogenic cooling of superconductors.