斜交水下含沙射流冲击下混凝土磨损模式的力学建模与分析

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2025-08-27 DOI:10.1016/j.triboint.2025.111138

Kang Liu , Haoran Wang , Zhigang Wang , Yongcan Chen , Hui Xie , Zhaowei Liu

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引用次数: 0

摘要

本文以砂相动量为关键指标，建立了斜浸没含砂射流作用下混凝土磨损的二维力学模型。改进的速度和轴向浓度公式考虑了颗粒不完全沉降，对已发表数据的验证产生平均相对误差为3.20 %，相关系数为0.99。该模型捕获了空间动量分布和跨冲击角（20°-90°）的定向磨损特征。水下实验证实，磨损主要集中在射流轴附近，其几何形状主要受法向动量的影响，并受切向动量的影响而延长。临界正常动量阈值被量化，揭示了随时间的指数衰减。总的来说，它为水下射流动力学提供了新的见解，并为空间磨损预测提供了强大的框架。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Mechanistic modeling and analysis of concrete abrasion patterns under oblique submerged sand-laden jet impingement

This study proposes a two-dimensional mechanistic model to predict concrete abrasion under oblique submerged sand-laden jets, using sand-phase momentum as a key indicator. Improved formulations for velocity and axial concentration account for incomplete particle settling, with validation against published data yielding a mean relative error of 3.20 % and a correlation coefficient of 0.99. The model captures spatial momentum distributions and directional abrasion features across impact angles (20°–90°). Submerged experiments confirmed that abrasion concentrates near the jet axis, with geometry shaped mainly by normal momentum and elongated by tangential momentum. Critical normal momentum thresholds were quantified, revealing a time-dependent exponential decay. Overall, it offers new insights into submerged jet dynamics and robust framework for spatial abrasion prediction.

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来源期刊

Tribology International 工程技术-工程：机械

CiteScore

10.10

自引率

16.10%

发文量

627

审稿时长

35 days

期刊介绍： Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International. Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.