Numerical simulation of ultrasonic enhancement by acoustic streaming and thermal effect on mass transfer through a new computation model

传质 传质系数 声流 材料科学 超声波传感器 薄脆饼 传热系数 谐振器耦合系数 机械 热力学 传热 声学 物理 谐振器 光电子学
作者
Xingshuo Chen,Bayanheshig Bayanheshig,Qingbin Jiao,Xin Tan,Wei Wang
出处
期刊:International Journal of Heat and Mass Transfer [Elsevier]
卷期号:171: 121074-121074 被引量:32
标识
DOI:10.1016/j.ijheatmasstransfer.2021.121074
摘要

Mass transfer coefficient is an important parameter in the process of mass transfer to reflect the degree of enhancement of mass transfer process in liquid–solid reaction and in non-reactive systems. In the present paper, a new computational model including both acoustic streaming and ultrasonic thermal effect is established to quantitatively calculate the ultrasonic enhancement on mass transfer coefficient in liquid–solid reaction. A nonlinear Helmholtz equation containing the cavitation effect is used in the model to calculate the acoustic pressure distribution in the reactor, and a fluid-thermal coupling CFD involving mass transfer process for KOH solution is conducted to obtain the distribution and time-dependence of the mass transfer coefficient in silicon–KOH reaction. Mass transfer coefficient on silicon surface with a transducer at frequencies of 100 kHz has been numerically simulated, indicating that the mass transfer coefficient has the maximum value near the center of the silicon wafer, and increases with reaction time. The mass transfer coefficient in the center of the silicon wafer is increased by 14.3% from 6.043 × 10−5 m/s to 6.908 × 10−5 m/s under ultrasound power of 50W during reaction time from 0.1 hour to 1 hour (the mass transfer coefficient without ultrasound changes from 2.525 × 10−6 m/s to 7.615 × 10−7 m/s). A set of control simulations shows that the enhancement of mass transfer coefficient comparing to the situation without ultrasound is mainly resulted from the acoustic streaming, while the increasing of mass transfer coefficient with time is due to the thermal effect of ultrasound. The mass transfer coefficients under transducer power of 10W and 30W are also calculated, indicating that the mass transfer coefficient is positively correlated with the ultrasonic power.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
bkagyin应助廖小同采纳,获得10
刚刚
可靠代丝完成签到,获得积分10
1秒前
雾海完成签到,获得积分10
1秒前
田様应助科研通管家采纳,获得10
1秒前
共享精神应助科研通管家采纳,获得10
1秒前
Lucas应助科研通管家采纳,获得10
1秒前
Yziii应助科研通管家采纳,获得20
2秒前
赘婿应助科研通管家采纳,获得10
2秒前
完美世界应助科研通管家采纳,获得10
2秒前
科研通AI2S应助科研通管家采纳,获得10
2秒前
英俊的铭应助科研通管家采纳,获得10
2秒前
Jasper应助科研通管家采纳,获得10
2秒前
李健应助科研通管家采纳,获得10
2秒前
汉堡包应助科研通管家采纳,获得10
2秒前
2秒前
科研通AI2S应助科研通管家采纳,获得10
2秒前
传奇3应助科研通管家采纳,获得10
2秒前
Orange应助科研通管家采纳,获得10
3秒前
3秒前
wanci应助科研通管家采纳,获得10
3秒前
天天快乐应助科研通管家采纳,获得10
3秒前
香蕉觅云应助科研通管家采纳,获得10
3秒前
希望应助科研通管家采纳,获得10
3秒前
慕青应助科研通管家采纳,获得10
3秒前
NexusExplorer应助xxxd采纳,获得10
3秒前
稳重向南发布了新的文献求助20
4秒前
Joe发布了新的文献求助10
4秒前
岁岁菌发布了新的文献求助10
5秒前
吃不饱星球球长完成签到,获得积分10
5秒前
5秒前
6秒前
8秒前
sunxs发布了新的文献求助10
8秒前
积极蘑菇发布了新的文献求助10
8秒前
北冥有鱼发布了新的文献求助100
10秒前
束负允三金完成签到,获得积分10
11秒前
翟如风发布了新的文献求助10
11秒前
11秒前
科研通AI2S应助小至采纳,获得10
11秒前
高分求助中
Sustainability in ’Tides Chemistry 2000
The ACS Guide to Scholarly Communication 2000
Studien zur Ideengeschichte der Gesetzgebung 1000
TM 5-855-1(Fundamentals of protective design for conventional weapons) 1000
Threaded Harmony: A Sustainable Approach to Fashion 810
Pharmacogenomics: Applications to Patient Care, Third Edition 800
Gerard de Lairesse : an artist between stage and studio 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3074861
求助须知:如何正确求助?哪些是违规求助? 2728212
关于积分的说明 7502977
捐赠科研通 2376311
什么是DOI,文献DOI怎么找? 1259944
科研通“疑难数据库(出版商)”最低求助积分说明 610771
版权声明 597101