纳米沟槽表面气泡成核特性的分子动力学模拟

IF 4.9 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Thermal Sciences Pub Date : 2025-06-21 DOI:10.1016/j.ijthermalsci.2025.110093

Yuting Jia, Yusi Song, Jingtao Wang, Xiaosong Cui, Hongliang Chang

{"title":"纳米沟槽表面气泡成核特性的分子动力学模拟","authors":"Yuting Jia, Yusi Song, Jingtao Wang, Xiaosong Cui, Hongliang Chang","doi":"10.1016/j.ijthermalsci.2025.110093","DOIUrl":null,"url":null,"abstract":"<div><div>In order to investigate the effect of groove shape on bubble nucleation, the effect of smooth wall, rectangular groove, trapezoidal groove and tenon groove walls on bubble nucleation were investigated by molecular dynamics simulation. The results show that the nucleation time of groove wall surface is earlier than that of smooth wall surface, in which the nucleation time of rectangular groove wall surface is the earliest and the bubble nucleation volume of trapezoidal groove wall surface is the fastest increasing rate. The temperature of argon atoms within the tenon groove rises at the quickest rate,but due to the strong interaction potential energy inside the groove, the nucleation time is significantly later than the other groove walls, and the bubble nuclei are not generated inside the groove, so it is difficult for the argon atoms inside the groove to transform into gaseous argon atoms. In addition, the temperature of argon atoms in the grooves on the wall surface of various grooves is always higher than that in other areas counted, and the temperature of argon atoms in the tenon grooves is higher than that in other grooves, and the temperature of argon atoms in other grooves is almost equal.</div></div>","PeriodicalId":341,"journal":{"name":"International Journal of Thermal Sciences","volume":"217 ","pages":"Article 110093"},"PeriodicalIF":4.9000,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Molecular dynamics simulations of bubble nucleation characteristics of nano-groove surface\",\"authors\":\"Yuting Jia, Yusi Song, Jingtao Wang, Xiaosong Cui, Hongliang Chang\",\"doi\":\"10.1016/j.ijthermalsci.2025.110093\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>In order to investigate the effect of groove shape on bubble nucleation, the effect of smooth wall, rectangular groove, trapezoidal groove and tenon groove walls on bubble nucleation were investigated by molecular dynamics simulation. The results show that the nucleation time of groove wall surface is earlier than that of smooth wall surface, in which the nucleation time of rectangular groove wall surface is the earliest and the bubble nucleation volume of trapezoidal groove wall surface is the fastest increasing rate. The temperature of argon atoms within the tenon groove rises at the quickest rate,but due to the strong interaction potential energy inside the groove, the nucleation time is significantly later than the other groove walls, and the bubble nuclei are not generated inside the groove, so it is difficult for the argon atoms inside the groove to transform into gaseous argon atoms. In addition, the temperature of argon atoms in the grooves on the wall surface of various grooves is always higher than that in other areas counted, and the temperature of argon atoms in the tenon grooves is higher than that in other grooves, and the temperature of argon atoms in other grooves is almost equal.</div></div>\",\"PeriodicalId\":341,\"journal\":{\"name\":\"International Journal of Thermal Sciences\",\"volume\":\"217 \",\"pages\":\"Article 110093\"},\"PeriodicalIF\":4.9000,\"publicationDate\":\"2025-06-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Thermal Sciences\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1290072925004168\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Thermal Sciences","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1290072925004168","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}

引用次数: 0

摘要

为了研究槽形对气泡成核的影响，采用分子动力学模拟方法研究了光滑壁、矩形槽、梯形槽和榫槽壁对气泡成核的影响。结果表明：槽壁面的成核时间比光滑壁面早，其中矩形槽壁面的成核时间最早，梯形槽壁面的气泡成核体积增长速度最快；榫头槽内的氩原子温度上升速度最快，但由于槽内相互作用势能强，成核时间明显晚于其他槽壁，槽内不产生气泡核，因此槽内的氩原子很难转化为气态氩原子。此外，各种凹槽壁面上的凹槽中氩原子的温度始终高于其他统计区域，而榫头凹槽中氩原子的温度高于其他凹槽，而其他凹槽中氩原子的温度几乎相等。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Molecular dynamics simulations of bubble nucleation characteristics of nano-groove surface

In order to investigate the effect of groove shape on bubble nucleation, the effect of smooth wall, rectangular groove, trapezoidal groove and tenon groove walls on bubble nucleation were investigated by molecular dynamics simulation. The results show that the nucleation time of groove wall surface is earlier than that of smooth wall surface, in which the nucleation time of rectangular groove wall surface is the earliest and the bubble nucleation volume of trapezoidal groove wall surface is the fastest increasing rate. The temperature of argon atoms within the tenon groove rises at the quickest rate,but due to the strong interaction potential energy inside the groove, the nucleation time is significantly later than the other groove walls, and the bubble nuclei are not generated inside the groove, so it is difficult for the argon atoms inside the groove to transform into gaseous argon atoms. In addition, the temperature of argon atoms in the grooves on the wall surface of various grooves is always higher than that in other areas counted, and the temperature of argon atoms in the tenon grooves is higher than that in other grooves, and the temperature of argon atoms in other grooves is almost equal.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

International Journal of Thermal Sciences 工程技术-工程：机械

CiteScore

8.10

自引率

11.10%

发文量

531

审稿时长

55 days

期刊介绍： The International Journal of Thermal Sciences is a journal devoted to the publication of fundamental studies on the physics of transfer processes in general, with an emphasis on thermal aspects and also applied research on various processes, energy systems and the environment. Articles are published in English and French, and are subject to peer review. The fundamental subjects considered within the scope of the journal are: * Heat and relevant mass transfer at all scales (nano, micro and macro) and in all types of material (heterogeneous, composites, biological,...) and fluid flow * Forced, natural or mixed convection in reactive or non-reactive media * Single or multi–phase fluid flow with or without phase change * Near–and far–field radiative heat transfer * Combined modes of heat transfer in complex systems (for example, plasmas, biological, geological,...) * Multiscale modelling The applied research topics include: * Heat exchangers, heat pipes, cooling processes * Transport phenomena taking place in industrial processes (chemical, food and agricultural, metallurgical, space and aeronautical, automobile industries) * Nano–and micro–technology for energy, space, biosystems and devices * Heat transport analysis in advanced systems * Impact of energy–related processes on environment, and emerging energy systems The study of thermophysical properties of materials and fluids, thermal measurement techniques, inverse methods, and the developments of experimental methods are within the scope of the International Journal of Thermal Sciences which also covers the modelling, and numerical methods applied to thermal transfer.