Numerical simulation of laminar flow through a pipe using. Physics of fluid flow in porous media mit department of. Engineering division, barc using comsol multiphysics highlight the capability of comsol multiphysics to simulate problems involving twophase flow and multiple physics part1. The model comes from the porescale flow experiments conducted by arturo keller, maria auset, and sanya sirivithayapakorn of the university of california, santa barbara. The dominating heat transfer mechanism is convection and two energy equations are required since the porous media region contains both fluid and solid. Modeling darcian and nondarcian flow in porous media. Introduction flow and transport phenomena in fractured porous media have been thoroughly studied, theoretically, experimentally and numerically, mostly because cracks are commonly present in rocks, bricks, or concrete. When you use this model, you define a cell zone in which the porous media model is applied and the. One other interesting thing, you have the pressure as p in the porous section and 0 in the turbulent section. Modeling reacting flow in porous media comsol blog. Selecting the right fluid flow interface for porous media.
Pdf comsol multiphysics modeling in darcian and non. A special feature of the heat transfer in porous media interface is the implemented geothermal heating feature, represented as a domain condition. Porous media are modeled by the addition of a momentum source term to the standard fluid flow equations. The chemical engineers practical guide to fluid mechanics. Understanding the morphology of the observations is always challenging due to simultaneous impacts of multiple factors on the flow regime such as medium heterogeneities, fluid viscosities, capillarity and wettability. Flow in porous media, heat transfer in and between porous media and gas. For users of the heat transfer module, comsol multiphysics version 5. Modelling of twophase flow in porous media with volumeoffluid method. Pipe flow software generating and analyzing pipe flow. Different interfaces are available to cover a range of microfluidic flows. Modelling and simulation of hydrogen storage device for fuel cell using comsol.
In fluid mechanics, fluid flow through porous media is the manner in which fluids behave when flowing through a porous medium, for example sponge or wood, or when filtering water using sand or another porous material. His research focuses on advancing our fundamental understanding and predictive capabilities of the simultaneous flow of two or more fluids through rocks, soils and other porous materials. Modelling and simulation of hydrogen storage device for. Natural fractured reservoir engineering phdg textbooks in preparation, intended to be issued during 2015. The microfluidics module features a dedicated physics interface for porous media flow based on darcys law. This paper addresses two phase flow in porous media simulated using the coupled navierstokes and cahnhilliard pfm cahn and hilliard, 1958 and solved by comsol multiphysics with finite element method. Recent years have produced an explosion of research on the transport of fluid mixtures in natural, heterogeneous porous media. Nov 10, 2014 learn how to model porous media flow and chemical reaction in comsol multiphysics. Result from simulations show a rapid cooling of air due to the high specific surface area in the porous material.
The aim of the present work is to implement in comsol multiphysics a multiphase fluid flow model in porous media, also known in the oil reservoir engineering literature as a black oil model, using. However, less is known about the gas transport in a dry material and what. Comsol cfd with porous media cfd online discussion forums. A catalytic bed reactor with an injection needle is simulated. Moreover we define and study two test cases for intercomparison. Finally for one of the testcases some results of an extensive sensitivity study is presented.
A cfd analysis of fluid flow in a porous media using ansys fluent. With the new version of the free and porous media flow interface, you can couple laminar or turbulent free flow with porous media flow. Modelling of twophase flow in porous media with volumeof. Modelling of twophase flow in porous media with volumeoffluid method bertrand lagree to cite this version. A large number of studies have been conducted on saturated porous media with a fluid flow, commonly liquid. Includes uptodate tutorial coverage for using the popular comsol multiphysics 5. Model porous media flow and chemical reaction in comsol. Discretization and gridding in reservoir simulation 2. A fundamental assumption made in this model is that the dispersed.
Pdf dynamics of fluids in porous media download full. The options for saturated porous media include the darcys law interface for slow flow and the the physics interfaces and building a comsol multiphysics model in. Flow through porous media can also occur on microscale geometries. Comsol, the comsol logo, comsol multiphysics, comsol desktop, comsol server, and. Modelling mass and heat transfer in a porous structure. Density variations can initiate flow even in a still fluid. Modelling of twophase flow in porous media with volumeof fluid method bertrand lagree to cite this version. Water saturation in the porous medium is computed over time. Transport and fate of colloids depend largely on flow field in the pores and it is, therefore, important to simulate the flow field while taking grain surface properties into account. During this period it has become apparent that many, if not most, porous media, such as soil and geologic formations, possess a hierarchical structure. Comsol multiphysics offers several physics interfaces to model porous media and subsurface flow.
You can also easily combine porous media and turbulent flow in your fluid flow simulations. Chemical reaction engineering module updates comsol 5. Which porous media and subsurface flow interface should i use. Problem definition in this tutorial we show a very easy example how to solve fluid flow in porous media with quickersim toolbox for matlab. The options for saturated porous media include the darcys law interface for slow flow and the the physics interfaces and building a. You will experience speedup by a factor of up to ten in software responsiveness, as well as new and improved features for solving, meshing, and the physicsbased addon modules. A flow and transport model in porous media for microbial. Evaporation in porous media with large evaporation rates comsol. Twophase flow simulations drop formation at a single hole in a sieve plate air pulsed liquid columns liquidliquid twophase flow at microfluidic junctions. You will also see a demonstration of how to use a porescale model to calculate homogeneous flow properties at the macroscale level. This equation is used to predict the flow rate through porous passages such as filter, filter beds and fluidised beds in combustion chambers. Here is the link of the file which contains the boundary condition details. Pdf comsol implementation of a multiphase fluid flow model in.
Intro to modeling porous media flow with comsol multiphysics. This not only gives us a deeper understanding but also gives us confidence in using macroscopic approaches to simulate flow in porous materials. Normally, you can open the model inputs section of the fluid properties tab, and there will be a reference. The flow instability fingering of the displacing phase is one of the causes for inefficient immiscible displacements in porous media ferer et al. We give a general overview, with remarks concerning the modeling using comsol multiphysics. The pipe flow module is used for simulations of fluid flow, heat and mass transfer, hydraulic transients, and acoustics in pipe and channel networks.
Cracks, saturated porous media, model verification, numerical modeling of flow and transport 1. Evaporation in porous media with large evaporation rates evaporation in porous media is an important process in the food and paper industries, among others. Learn about these heat transfer features and more below. Coupling heat transfer with subsurface porous media flow. Apr 24, 2014 heat is balanced by conduction and convection processes and can be generated or lost through defining this in the source term, q. A water column above the soil column applies constant pressure on the porous media and seeps through the soil, mixes with the pore water and flows out. We discuss homogeneous approaches, including darcys law and brinkman equations. With the help of infinite elements, porous domains are permitted to be unbounded. The dispersed phase can exchange momentum, mass, and energy with the fluid phase. Modeling flow in porous media on the microscopic scale. The subsurface flow module users guide comsol documentation. The aim of the present work is to implement in comsol multiphysics a multiphase fluid flow model in porous media, also known in the oil reservoir engineering literature as a black oil model, using a standard finite element approach.
The results are compared with published literature in. Porescale modeling of nonisothermal two phase flow in 2d. For anyone interested in modeling chemical reactions andor flow through porous media, we have created a video to demonstrate how comsol multiphysics simulation software handles such applications. A catalytic bed reactor with an injection needle is simulated and improved upon, using the reacting flow in. When you use this model, you define a cell zone in which the porous media model is applied and the pressure loss in the flow is determined via your inputs as. Learn how to model porous media flow and chemical reaction in comsol multiphysics. The flow is often frictiondominated when the pore size is in the micron range and darcys law can be used. The effect of the threedimensional phenomena on instability growth was investigated. A video tutorial for modeling reacting flow in porous media. The porous media model can be used for a wide variety of single phase and multiphase problems, including flow through packed beds, filter papers, perforated plates, flow distributors, and tube banks. Assumption thermal equilibrium between the hydrogen gas and metal hydride exist the gas phase is ideal. Densitydriven fluid flow in porous media comsol blog. For a better understanding of what characterizes flow through a porous material, it is worth taking a closer look at the detailed structure. Heat is balanced by conduction and convection processes and can be generated or lost through defining this in the source term, q.
The aim of the presentwork is to implementin comsol multiphysics a multiphase fluid flow modelin porous media, also known in the oilreservoir. Multiphase fluid flow models in porous media are frequentin many important applications of earth sciences, such as in groundwater contamination, subsurface remediation and reservoir modeling. The fluid phase is treated as a continuum, while the dispersed phase is solved by tracking a large number of particles, bubbles, or droplets through the calculated flow field. Now includes comsol multiphysics 5 since most chemical processing applications are conducted either partially or totally in the fluid phase, chemical engineers selection from fluid mechanics for chemical engineers. As commonly observed, some fluid flows through the media while some mass of the fluid is stored in the pores present in the media. The aim of the present work is to implement in comsol multiphysics a multiphase fluid flow model in porous media, also known in the oil reservoir engineering. The free and porous media flow interface 468 domain, boundary, point, and pair nodes for the free and porous. This example treats the modeling of subsurface flow where free convection in porous media is analyzed. This example models the effects of heat transfer with phase change and local. The fluid flow branch represent a wide range of possibilities. We deal with an incompressible fluid flow with pressure field p and velocity field subject to incompressibility constraint. Consider this your interactive tour of the model documentation for our porous reactor model. You will also get an overview of the features and functionalities in the porous media flow module.
Pdf comsol implementation of a multiphase fluid flow. This nonconventional model of porous media flow utilizes creeping stokes flow in the interstices of a porous media. If v is high going into the porous section and low coming out of it, then there must be mass buildup in the porous section. Fluid movement in saltlake systems, salinedisposal basins, dense contaminant and leachate plumes, and geothermal reservoirs. The aim of this dissertation is hence to determine the flow fields in realistic pores by solving the incompressible navierstokes equation. Adaptive interfacial mesh refinement is used to reduce the running time. The water that flows into the soil has zero concentration of solute. Links ruben juanes is a computational geoscientist and engineer, with a strong interest in the physics of multiphase flow in porous media. The stationary navierstokes equations describe the fluid flow in the freeflow regions. Modelling of twophase flow in porous media with volumeof fluid method.
Pdf comsol implementation of a multiphase fluid flow model. Uber comsol multiphysics modellierungsbeispiele zum. This interface remains unique in its coupling with the electrochemistry interfaces for the modeling of porous electrodes. The richards equation interface describes nonlinear flow in variably saturated porous media. To learn more about modeling fluid flow in porous media with comsol multiphysics, contact us for a software evaluation.
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