摘要：To identify the velocity distributions of abrasive particles in abrasive liquid nitrogen jet, a computational fluid dynamic model was built to simulate the flow field of abrasive liquid nitrogen jet. The velocity of particles in liquid nitrogen jet was solved using the Lagrangian discrete phase model by coupling the physical property equations of nitrogen and then compared with that in water jet. Additionally, a parametric sensitivity analysis was performed to study the effect of both abrasive particle and jet parameters on particles velocity distributions in liquid nitrogen jet. The results showed that the high pressure liquid nitrogen which carried abrasive particles could generate high speed abrasive liquid nitrogen jet under the acceleration action of jet nozzle. Given the same pressure drop of nozzle, the maximum velocity of particle in liquid, nitrogen jet was about 8.04% higher than that in water jet. With regard to abrasive particle parameters, the velocity of particles in liquid nitrogen jet decreased with the growth of the particle diameter and mass flow rate while was slightly affected by particle initial velocity. For jet parameters, the velocity of particles increased with the growth of nozzle pressure drop, nozzle diameter and fluid temperature, but was hardly influenced by confining pressure. This study is expected to provide theoretical references for design and application of abrasive liquid nitrogen jet. (C) 2015 Elsevier B.V. All rights reserved.

关键字：Liquid nitrogen Abrasive jet Fracturing Particle velocity Numerical simulation

ISSN号：1875-5100

卷、期、页：卷: 27 页: 1657-1666 子辑: 3

发表日期：2015-11-01

期刊分区（SCI为中科院分区）：三区

收录情况：SCIE（科学引文索引网络版）,ESI（基本科学指标数据库）,EI（工程索引）

发表期刊名称：JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING

参与作者：高峰

通讯作者：蔡承政

第一作者：黄中伟,李根生

论文类型：期刊论文

论文概要：蔡承政,黄中伟,李根生,高峰，Particle velocity distributions of abrasive liquid nitrogen jet and parametric sensitivity analysis，JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING，2015，卷: 27 页: 1657-1666 子辑: 3

论文题目：Particle velocity distributions of abrasive liquid nitrogen jet and parametric sensitivity analysis