アプリケーションギャラリ

多孔質構造における輸送は, 通常, 有効輸送特性を持つ簡略化された均質モデルを用いて扱われます. これは, 多孔質構造を構成する細孔や粒子の典型的な寸法が, モデル化対象となる領域のサイズよりも数桁小さいため, ほとんどの場合に必要不可欠です. このモデルは, 詳細モデルで記述された人工多孔質構造における輸送と, 有効輸送特性を用いた簡略化された均質多孔質媒体アプローチを比較することにより, 多孔質媒体における有効拡散率の概念を導入します. このモデルは2つの部分で構成されています. 最初の部分では, 詳細な形状を持つモデルを作成します. 2番目の部分では, ... 詳細を見る

This example computes the effectiveness of a porous microchannel heat sink over a conventional microchannel heat sink. The model is fully parameterized. A parameter study on the thickness of the porous substrate is used to determine the optimal configuration. 詳細を見る

Modeling packed beds, monolithic reactors, and other catalytic heterogeneous reactors is substantially simplified with the Reacting Flow in Porous Media multiphysics interface. This defines the diffusion, convection, migration, and reaction of chemical species for porous media flow ... 詳細を見る

This app is an example of how the poroelastic properties of a porous material can be determined based on measurement done with an impedance tube and parameter estimation. Being able to determine the characteristics of a porous material from a single and simple measurement opens the door ... 詳細を見る

It can in many cases be difficult to get accurate material properties for porous materials. Measuring the properties to high precision can involve lengthy measurements using different techniques. It can therefore be interesting to understand how uncertainties in different material ... 詳細を見る

This example shows how to estimate the permeability of a porous material by creating a detailed fluid flow model in a small unit cell. The result of the model is a lumped permeability of the material, which can be used in homogenized models using Darcy's law or the Brinkman equations. ... 詳細を見る

Non-Newtonian fluids have complex flow characteristics that vary with shear rate, making their behavior in porous materials difficult to predict. Pore scale modeling captures these flow patterns at a microscopic level, helping derive properties for macroscale use. This model ... 詳細を見る

This tutorial presents the averaging models available within the Heat Transfer in Porous Media interface, used to compute the effective thermal conductivity, when the local thermal equilibrium assumption is made. The models are compared for porosities ranging from 0 to 1, and for a ... 詳細を見る

This example describes how to simulate the flow of a thin film of fluid in the gap between two rectangular plates, one of them with a porous facing, when the fluid is squeezed as a consequence of the relative motion between the plates. The model accounts for the ingress and egress of ... 詳細を見る

This tutorial studies the propagation of sound in the presence of a porous absorber in the time domain. It demonstrates how to model a porous absorber using the local and extended reacting approximations and compares the two approaches for absorbers of various thickness. The dissipative ... 詳細を見る