Research on erosion characteristics of a novel cavitation nozzle under nonsubmerged condition
Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science, 2020年07月07日
采用Fluent软件对新型空化喷嘴进行数值模拟及黄铜表面冲击力试验，结果表明喷嘴出口动态环境有效扩大低压区；非淹没条件下其除锈能力优于同压高压射流，清洗主要源于空泡溃灭。
Abstract
When a cavitating jet enters the atmosphere directly, its effect weakens rapidly, and erosion energy it produces cannot be fully utilized. Regarding problem that existing cavitation nozzles are only used in submerged condition, methods to improve ability of jets under nonsubmerged condition studied. The nozzle is visually simulated using Fluent software, results show dynamic environment at outlet effectively expands nearby low-pressure area. enhancement annular on domain verified by measuring impact force curve through tests brass surface. Cleaning derusting has stronger than high-pressure same pressure, demonstrating cleaning mainly comes from collapse bubbles.