相关实验视频

Updated: Jul 16, 2025

Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications

Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications

Published on: January 16, 2018

研究和建模陶泡过器中的流体流量

Massoud Hassanabadi¹, Shahid Akhtar², Ragnhild E Aune¹

¹Department of Materials Science and Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway.

Materials (Basel, Switzerland)

|September 9, 2023

概括

这项研究模拟了陶泡过器 (CFF) 中的流体流动,发现模拟结果对于间位速度不同于简化的方程. 数值方法准确地预测孔隙性,但由于几何近似而高估了透性.

科学领域:

材料科学与工程材料科学与工程
流体动力学流体动力学
计算机建模计算建模

背景情况:

陶泡过器 (CFF) 对于液体过至关重要.
了解它们的流体流动特性对于优化性能至关重要.
现有的模型可能无法完全捕捉CFFs中的复杂流动行为.

研究的目的:

在CFF (30级和50级) 中数值建模流体流动特性.
将模拟结果与已确定的流体动力学方程进行比较.
评估CFFs的新型几何建模方法的准确性.

主要方法:

从CFF的像素图像生成了2D宏观尺度的几何形状.
采用了使用斯托克斯方程 (Creeping Flow接口,COMSOL Multiphysics®) 的数字建模.
通过表面集成和用户定义的方程来评估孔隙性和透性.

主要成果:

估计的平均间歇速度高于杜皮特-福赫海默方程所预测的.
模拟的多孔度与实验值非常相匹配,验证了数值方法.
模拟的透度超过了实验值,归因于几何简化.

结论:

建议的方法有效地为模拟创建具有代表性的CFF几何形状.
数字建模提供可靠的孔径预测,但需要对透性进行细化.
在CFF中,流量行为偏离了简化模型,需要先进的模拟技术.

关键词:

科姆索尔多物理 (COMSOL Multiphysics®) 是一门学科,它可以合金的直流造是使用直流造的的过器过器的过方法回收回收的使用方法陶泡过器 (CFF) 是一种的CFFs的透性.

更多相关视频

Microfluidic Fabrication Techniques for High-Pressure Testing of Microscale Supercritical CO2 Foam Transport in Fractured Unconventional Reservoirs

Microfluidic Fabrication Techniques for High-Pressure Testing of Microscale Supercritical CO2 Foam Transport in Fractured Unconventional Reservoirs

Published on: July 2, 2020

Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp

Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp

Published on: February 3, 2014

相关概念视频

Typical Model Studies

Typical Model Studies

Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.

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...

Laminar and Turbulent Flow

Laminar and Turbulent Flow

Fluid dynamics is the study of fluids in motion. Velocity vectors are often used to illustrate fluid motion in applications like meteorology. For example, wind—the fluid motion of air in the atmosphere—can be represented by vectors indicating the speed and direction of the wind at any given point on a map. Another method for representing fluid motion is a streamline. A streamline represents the path of a small volume of fluid as it flows. When the flow pattern changes with time, the...

Steady Flow of a Fluid Stream

Steady Flow of a Fluid Stream

Consider a control volume, such as a pipe with solid boundaries, through which fluid flows and changes direction due to the impulse exerted by the resulting force from the pipe walls. In steady flow, the mass of fluid entering the control volume at a given time, t, with velocity v1, is equal to the mass leaving after infinitesimal time dt, with velocity v2.
During this process, the momentum of the fluid within the control volume remains constant over the time interval dt. By applying the...

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.

Rapidly Varying Flow

Rapidly Varying Flow

Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...