相关实验视频

Updated: Feb 28, 2026

A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)–Cell Interaction and the Resultant Bioeffects at the Single-cell Level

A Microfluidic System with Surface Patterning for Investigating Cavitation Bubble(s)–Cell Interaction and the Resultant Bioeffects at the Single-cell Level

Published on: January 10, 2017

三维CFD模拟用于描述一个矩形泡柱,其独特的气体分配器在极低的表面气体速度下运行

Arijit Ganguli¹, Vishal Rasaniya¹, Anamika Maurya¹

¹School of Engineering and Applied Sciences, Ahmedabad University, Ahmedabad 380005, Gujarat, India.

|February 27, 2026

概括

气体分配器孔的大小显著影响流体动力学. 较小的孔 (200微米) 创建动态羽毛,而较大的孔 (600微米) 导致稳定,中央气体分布,影响液体混合,并使新的关联发展.

科学领域:

化学工程是化学工程的重要组成部分.
流体动力学流体动力学
计算流体动力学 (CFD) 是一种计算流体动力学.

背景情况:

气体分配器在多相反应堆中对于高效的气液接触至关重要.
了解气体的行为和液体的混合对于过程优化至关重要.
之前的研究往往没有详细描述洞大小对流动力学影响的细节.

研究的目的:

用三维 (3D) 模拟来描述矩形柱中的流体动力学.
为了研究气体分配器孔大小 (600微米与200微米) 对气柱行为和液体混合的影响.
开发和验证气体保持和液体速度的相关性.

主要方法:

执行了带有统一气体分配器的矩形柱子的3D CFD模拟.
根据现有文献中的实验数据验证了模拟模型.
在0.002,0.004和0.006m/s的表面气体速度下,模拟的气体分配器具有600微米和200微米的孔径.

主要成果:

气体羽毛的运动高度依赖于孔的大小:600微米的孔在完全通风的状态下产生中央,稳定的羽毛,而200微米的孔产生动态的,部分通风的羽毛,其行为跟随墙壁.
观察到各种各样的羽毛形状 (气球,帽子,等). 在开发过程中,表明复杂的流动模式.
开发了低表面速度的气体保持和液体速度的新相关性,与CFD数据有很好的一致性 (15-20%的偏差) 并优于现有的文献相关性.

结论:

孔径大小是气体分配器的关键设计参数,显著影响气液水力学.
该研究提供了关于羽毛动力学和液体混合的宝贵见解,这对于设计高效的气液反应堆至关重要.
拟议的相关性在特定操作模式下为气体保持和液体速度提供了改进的预测能力.

关键词:

在CFD模拟中进行CFD模拟.泡泡柱子是一种泡泡柱子.泡羽毛的泡羽毛是一个泡羽毛.流动模式流动模式有关天然气的停滞.这些微小气泡是微型气泡.

更多相关视频

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System

Published on: May 9, 2021

Measurements of Local Instantaneous Convective Heat Transfer in a Pipe - Single and Two-phase Flow

Measurements of Local Instantaneous Convective Heat Transfer in a Pipe - Single and Two-phase Flow

Published on: April 30, 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 purely axial,...

Turbulent Flow: Problem Solving

Turbulent Flow: Problem Solving

Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...

Steady, Laminar Flow Between Parallel Plates

Steady, Laminar Flow Between Parallel Plates

Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.