"Exploratory Research on Supersonic Abrasive Ice-Blasting"

这个SGER项目将研究产生冰的可行性 在超音速射流的减压区，接着是 超声波冰蚀去除油漆， 各种工业结构的腐蚀。 这 方法将取代喷砂磨损， 严重的环境和经济缺陷。 的能力 为了在所需位置产生合适的冰晶， 用于研磨目的的尺寸必须被证明。 各种 研磨颗粒，在研磨后立即变成残留物 磨损，被水所取代， 位置. 流动和热量的简化分析模型 超音速射流夹带的小颗粒周围的传递 表明会形成水滴。 拟议 实验将测试模型假设，确定其他 相关现象，最后验证了 approach. 这项探索性研究与环境友好有关 制造（例如，核能的喷砂 设施或涂层米尔斯），并保持民事 基础设施（例如， 桥梁、大型结构和设备，以及有毒物质 喷砂储存）。

This SGER project will examine the feasibility of generating ice in the decompression region of a supersonic jet, followed by a supersonic ice-blasting abrasion for the removal of paint and corrosion from a broad variety of industrial structures. This approach will replace sand blasting abrasion, which has significant environmental and economic drawbacks. The ability to generate at the desired location ice crystals of appropriate size for abrasive purposes has to be demonstrated. Various abrasive particles, that become residue immediately after abrasion, are replaced by water that is available at almost any location. A simplified analytical model for flow and heat transfer around small particles entrained by a supersonic jet indicates that water droplets will be formed. The proposed experiments will test the model assumptions, identify other related phenomena, and finally test the feasibility of the approach. This exploratory research is relevant to environmentally benign manufacturing (e.g. abrasive blasting of nuclear power facilities or coated mills) and to maintaining the civil infrastructure (e.g. cleaning of the lead-based paints from bridges, large structures and equipment, as well as toxic sandblasting storage).