相关实验视频

Updated: Jul 21, 2025

Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique

Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique

Published on: June 12, 2015

在圆柱形室侧壁上具有螺旋图案的微混合器的性能调查

Shuang Yang¹, He Zhang¹, Shuihua Yang²

¹School of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, China.

|July 29, 2023

概括

这项研究引入了优化的被动微混合器,这些微混合器具有连续的螺旋图案,可有效地混合液体. 这些新的设计在一个紧的14毫米长度中实现了高混合效率 (99.81%),改进了传统结构.

科学领域:

流体动力学流体动力学
微流体学微流体学
化学工程是化学工程的重要组成部分.

背景情况:

被动微混合器对于高效的微尺度流体操纵至关重要.
在微流体设备中优化混合性能对于各种应用至关重要.
现有的螺旋微混合器面临着尺寸和压力下降的挑战.

研究的目的:

设计和优化带有螺旋图案的被动微混合器,以提高混合效果.
确定影响微混合器性能的关键设计参数.
开发一个紧而高效的微混合器,降低压力损失.

主要方法:

使用计算流体动力学 (CFD) 模拟来分析混合性能.
微混芯片是使用3D打印技术制造的.
实验验证使用多视图视觉测试进行.

主要成果:

形的大小和连续性被确定为混合性能的关键因素.
一个带有连续侧墙螺旋设计的微混合器表现出卓越的性能.
优化的微混合器在14毫米长度内的Re = 5时实现了99.81%的混合指数.
3D打印的原型证实了模拟结果.

结论:

连续的侧墙螺旋图案为被动微混合器优化提供了一个有效的策略.
开发的微混合器设计显著提高了混合效率,同时减少了足迹和压力损失.
这项工作为设计高性能微流体混合装置提供了一种新的方法.

关键词:

不对称的输入口.这是一个圆柱状的混合室.混合效率的混合效率这是一个螺旋式的螺旋图案.

更多相关视频

Reduced-gravity Environment Hardware Demonstrations of a Prototype Miniaturized Flow Cytometer and Companion Microfluidic Mixing Technology

Reduced-gravity Environment Hardware Demonstrations of a Prototype Miniaturized Flow Cytometer and Companion Microfluidic Mixing Technology

Published on: November 13, 2014

One-Step Approach to Fabricating Polydimethylsiloxane Microfluidic Channels of Different Geometric Sections by Sequential Wet Etching Processes

One-Step Approach to Fabricating Polydimethylsiloxane Microfluidic Channels of Different Geometric Sections by Sequential Wet Etching Processes

Published on: September 13, 2018

相关概念视频

Steady, Laminar Flow in Circular Tubes

Steady, Laminar Flow in Circular Tubes

Hagen-Poiseuille flow describes a viscous fluid's steady, incompressible flow through a cylindrical tube with a constant radius R. This flow profile is often applied to understand fluid transport in narrow channels, such as capillaries. It serves as a foundational example of laminar flow. In this model, cylindrical coordinates (r,θ,z) are used to describe the radial (r), angular (θ), and axial (z) dimensions within the tube. For Hagen-Poiseuille flow, the velocity profile is...