Electroosmosis comsol tutorial pdf

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. Watch this selfguided series of tutorial videos to learn how to use the comsol multiphysics software from the comfort of your desk. In his keynote talk at the comsol conference 2018 lausanne, andri bezzola of. The pressure and the velocity field are the solution of the navierstokes equations.

Where can i find comsol multiphysics tutorial models. Metu mechanical engineering department me 582 finite. Here, i will describe the concept of electroosmosis and the electrical double layer edl, and how to model these in comsol. 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. The model uses the predefined electroosmotic flow multiphysics coupling. As alternative we can use the already constructed geometry by applying the steps from part b. 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. In part a of the tutorial we construct the geometry of the problem to be solved. Its spatial characteristics are 100 microns wide by fifty microns long.

In order to solve governing equations of ac electroosmosis, a commercial software comsol multiphysics is implemented. Simulating electroosmotic flow with the microfluidics module. The wet surface feature is used to implement the source term for the water vapor and to. Numerical modeling and analysis of electro osmotic.

Introduction nanopores have been identified as a key structure for the next generation of biosensors and dna sequencers. 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. Comsol conference prague 2006 page principleofac electroosmosis m. Corrosion module, for modeling of corrosion and corrosion protection. 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. All clones that disobeyed order 66 updated duration. Observation of streamlines and numericalobservation of streamlines and. In addition, we discuss topics such as how to treat the electrical double layer and turning a model into a userfriendly simulation app. Poissonboltzmann models for ac electroosmosis flows. Pdf study the electroosmosis flow in microchannel with.

Because electroosmotic velocities are independent of conduit size, as long as the electrical double layer is much smaller. This tutorial shows how to couple three physics interfaces to model evaporative cooling. By the end you will be well on your way to reaping all. 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. The available the available study types are listed in table 11 with column definitions after the table. In electroosmosis the uncompensated ions in the charged electric double layer edl present on the fluid surfaces. Particular functionality may be common to several products. Pdf lowvoltage electroosmotic micropump solved with. Electroosmotic flow or electro osmotic flow, often abbreviated eof. Handout 6 comsol tutorial 11 comsol is a finite element based simulation software. Metu has a limited classkit license of comsol, which has only a few of the basic modules.

Microfluidic devices are so small that the micropumps and micromixers that control and mix the fluid inside the device cannot involve any moving components. Modeling electroosmotic flow and the electrical double layer. In our research group, we usually employ comsol multiphysics. 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. 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. These instructional videos then take you through each step of the modeling workflow, including.

To help the learning process, there is a streamlined. There are many applicationspecific tutorial models, so the more modules you have installed, the more tutorial models you will have at your disposal. The analytes in the system are positively charged sodium and a. 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. To start, we guide you through the comsol multiphysics user interface, explaining the purpose and use of each aspect. Pdf the growing interest of researchers in the phenomenon of electrokinetic can be. Multiphysical modeling of dc and ac electroosmosis. Introduction to application builder comsol multiphysics. After a general introduction to the user interface, several tutorials will take you step by step through sample models that highlight important features. It also provides a quick introduction to creating applications using the application builder. Microfluidics electrostatics fundamentals related to. Setup the model using the graphical user interface, then save the model as a mfile.

Use the comsol desktop to get your first model implemented using the comsol java api. Instead, they must take advantage of electroosmotic flow. Release notes comsol multiphysics new products in version 4. The application gallery features comsol multiphysics. Read this book if you are new to comsol multiphysics. Microfluidics electrostatics fundamentals related to electroosmosis duration. Velocity profile of electroosmotic flow in a sample circular capillary. Simulation of highly nonlinear electrokinetics using a.

Poisson equation based modeling of dc and ac electroosmosis. Introductory electrostatics concepts required for an integral boundary layer analysis of the electrical double layer to predict electroosmotic flow. Modeling of an acelectroosmosis based microfluidic mixer. Electroosmotic flow in porous media comsol multiphysics. Comsol, comsol multiphysics, comsol reac tion engineering lab, and. Pdf numerical simulation of the electrical double layer. The ac electroosmosis is mostly based on the coulombic interaction between an.

This example describes an array of heating tubes submerged in a vessel with fluid flow entering at the bottom. Uh innovation centre college lane hatfield hertfordshire al10 9ab. Keywords tas, biomems, electroosmosis, comsol multiphysics, electrokinetic flow, ionic fluid. This study demonstrates a pore whose conductive properties may be externally controlled in realtime. Nanopore, gating, nanoelectrofluidics, ionic transistor, comsol 1.