Flow friction in silicon-based sinusoidal wavy microchannels

张弛

doi:10.3969/j.issn.0438-1157.2012.04.003

您当前的位置：

首页 >

文章列表页 >

Flow friction in silicon-based sinusoidal wavy microchannels

更新时间：2025-12-10

- Flow friction in silicon-based sinusoidal wavy microchannels
- CIESC Journal Issue 4, Pages: 1011-1018(2012)
- 作者机构：
  
  上海交通大学机械与动力工程学院,上海
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2012.04.003
  CLC： K124
- Online First：05 April 2012，
  
  Published：05 April 2012
- 稿件说明：
移动端阅览
张弛. Flow friction in silicon-based sinusoidal wavy microchannels[J]. CIESC Journal, 2012, (4): 1011-1018.
DOI：

张弛. Flow friction in silicon-based sinusoidal wavy microchannels[J]. CIESC Journal, 2012, (4): 1011-1018. DOI： 10.3969/j.issn.0438-1157.2012.04.003.

摘要

硅基正弦波纹微通道在微尺度强化换热、微流体器件中均有重要运用，而目前尚未见有关于其内部流动特性的实验报道。利用标准微机电系统（MEMS）工艺在硅基芯片上加工制成一系列具有不同相位差和周期、当量直径为160 μm的正弦波纹微通道，通过实验研究了其内部流动阻力特性。研究表明：正弦波纹微通道较平直微通道阻力均有增加，且增加幅度与波纹微通道两侧壁的相位差和周期有关。对于周期相同的波纹微通道，两侧壁相位差越大，阻力也越大。对于相位差相同的波纹微通道，周期对阻力的影响则较为复杂：当相位差为0时，呈现出周期越大、阻力越小的趋势（除最小周期通道外）；当相位差为π时，呈现出周期越大、阻力越大的趋势。研究还发现：随着周期减小，相位差对阻力的影响减小，当周期缩短至0.5 mm时，相位差为0和π的波纹微通道内的阻力特性曲线几乎重合。

Abstract

A series of sinusoidal wavy microchannels with different phase shifts and wavelengths were fabricated on the silicon wafer based on the MEMS technology.Flow frictions in these sinusoidal wavy microchannels were investigated experimentally.Results show that the flow friction in wavy microchannels is higher compared with the smooth straight microchannels with the same hydraulic diameter.Both the phase shift and the wavelength have effect on the flow friction in wavy microchannels.For the microchannels with the same wavelength

the flow friction increases as the phase shift increases.However

the influence of wavelength is complicated.For the microchannels with phase shift of 0

the flow friction normally increases as the wavelength decreases with the exception for the microchannel with the smallest wavelength.For the microchannels with phase shift of π

the flow friction decreases as the wavelength decreases due to the decrease of the throat size in the microchannels.The investigation also shows that as the wavelength decreases

the influence of phase shift on the flow friction decreases.For the wavelength of 0.5 mm

there is little difference in the flow friction between the microchannels with 0 and π phase shifts.

关键词

Keywords

references

Views

408

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Influence of tip clearance on heat transfer efficiency in staggered micro-cylinders-group

Identification of gas-liquid two-phase flow patterns in a riser based on recursive characteristics and CNN

Research progress of ionic liquids in separation of aromatics/alkanes and olefins/alkanes

Controlled synthesis of Bi2MoO6/MoO3 composite fibers via in-situ hydrothermal method and their high-efficiency photocatalytic hydrogen production performance

Study on entropy wave production and dissipation in partially premixed swirl flames subject to inlet perturbations

Related Author

刘志刚

Related Institution

Energy Research Institute of Shandong Academy of Sciences

⁰