There are many applicationspecific tutorial models, so the more modules you have installed, the more tutorial models you will have at your disposal. The application gallery features comsol multiphysics. Pdf the growing interest of researchers in the phenomenon of electrokinetic can be. Poisson equation based modeling of dc and ac electroosmosis. If you click on no flux 1 you can find the equation that is applied under equation and the boundary on which this equation is applied. The effects that need to be taken into account are heat transfer, transport of water vapor, and fluid flow. Because electroosmotic velocities are independent of conduit size, as long as the electrical double layer is much smaller.
The available the available study types are listed in table 11 with column definitions after the table. Electroosmotic flow in porous media comsol multiphysics. These instructional videos then take you through each step of the modeling workflow, including. Comsol, comsol multiphysics, comsol reac tion engineering lab, and. Castellanos, fluid flow induced by nonuniform ac electric fields in electrolytes on microelectrodes. This is a multiphysics model because it involves fluid dynamics coupled with heat transfer. Watch this selfguided series of tutorial videos to learn how to use the comsol multiphysics software from the comfort of your desk.
In addition, we discuss topics such as how to treat the electrical double layer and turning a model into a userfriendly simulation app. Numerical simulation of the electrical double layer based on the poissonboltzmann models for ac electroosmosis flows. Velocity profile of electroosmotic flow in a sample circular capillary. Introduction to application builder comsol multiphysics.
Pdf lowvoltage electroosmotic micropump solved with. This study demonstrates a pore whose conductive properties may be externally controlled in realtime. Particular functionality may be common to several products. Electroosmotic flow or electro osmotic flow, often abbreviated eof. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Use the comsol desktop to get your first model implemented using the comsol java api.
The model uses the predefined electroosmotic flow multiphysics coupling. Metu has a limited classkit license of comsol, which has only a few of the basic modules. Observation of streamlines and numericalobservation of streamlines and. Microfluidics electrostatics fundamentals related to electroosmosis duration.
The combination of comsol products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. It also provides a quick introduction to creating applications using the application builder. The first half of the workshop focuses on comsol s general purpose multiphysics features which will be used to set up coupled electorkinetic and magnetodynamic simulations including. Poissonboltzmann models for ac electroosmosis flows. Tutorial for running comsol files from comsol website. Simulation of highly nonlinear electrokinetics using a. As alternative we can use the already constructed geometry by applying the steps from part b. The ac electroosmosis is mostly based on the coulombic interaction between an. Keywords tas, biomems, electroosmosis, comsol multiphysics, electrokinetic flow, ionic fluid. It comes with several modules under the titles structural mechanics, acoustics, fluid flow, heat transfer, chemical engineering, electromagnetics, etc. It provides an overview of the comsol environment with examples that show you how to use the comsol desktop user interface and the model builder. Numerical modeling and analysis of electro osmotic. The wet surface feature is used to implement the source term for the water vapor and to.
To view the mass transfer boundary conditions, expand the transport of diluted species and view the various tabs which include boundary conditions and initial values. Here, i will describe the concept of electroosmosis and the electrical double layer edl, and how to model these in comsol. Handout 6 comsol tutorial 11 comsol is a finite element based simulation software. Read this book if you are new to comsol multiphysics. The pressure and the velocity field are the solution of the navierstokes equations. Where can i find comsol multiphysics tutorial models. Introduction nanopores have been identified as a key structure for the next generation of biosensors and dna sequencers. After a general introduction to the user interface, several tutorials will take you step by step through sample models that highlight important features. Lowvoltage electroosmotic micropump solved with comsol multiphysics 3. Pdf study the electroosmosis flow in microchannel with. Multiphysical modeling of dc and ac electroosmosis. Introduction 5 introduction the acdc module is used by engineers and scientists to understand, predict, and design electric and magnetic fields in statics and lowfrequency applications. Comsol conference prague 2006 page principleofac electroosmosis m. Setup the model using the graphical user interface, then save the model as a mfile.
Metu mechanical engineering department me 582 finite. Corrosion module, for modeling of corrosion and corrosion protection. The informative charts give you an idea of comsol s capability by associated files, functions, and builtin options. Instead, they must take advantage of electroosmotic flow. Ac electroosmosis simulation results n g green a ramos a gon ale h morgan and an. In part a of the tutorial we construct the geometry of the problem to be solved. Watch this archived webinar to learn how to model electroosmotic flow, a useful skill for optimizing devices like micropumps and micromixers, with the comsol multiphysics software and addon microfluidics module. Furthermore, this example may also be defined and modeled using components. Modeling of an acelectroosmosis based microfluidic mixer. Numerical simulation of the electrical double layer based on the. Modeling electroosmotic flow and the electrical double layer. In his keynote talk at the comsol conference 2018 lausanne, andri bezzola of. By the end you will be well on your way to reaping all.
Simulating electroosmotic flow with the microfluidics module. This example describes an array of heating tubes submerged in a vessel with fluid flow entering at the bottom. When comsol compiles the equations the complex couplings generated by these userdefined expressions are automatically included in the. Its spatial characteristics are 100 microns wide by fifty microns long. Microfluidics electrostatics fundamentals related to. This tutorial shows how to couple three physics interfaces to model evaporative cooling. All clones that disobeyed order 66 updated duration. Nanopore, gating, nanoelectrofluidics, ionic transistor, comsol 1. Release notes comsol multiphysics new products in version 4. Uh innovation centre college lane hatfield hertfordshire al10 9ab. To help the learning process, there is a streamlined. In our research group, we usually employ comsol multiphysics. Introductory electrostatics concepts required for an integral boundary layer analysis of the electrical double layer to predict electroosmotic flow. Pdf numerical simulation of the electrical double layer.
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