#COMSOL 5.1 DIFFUSION HOW TO#
#COMSOL 5.1 DIFFUSION SERIES#

This in turn results in bending of the material towards the anode.Д¬onceptual model of an IPMC. In cases of water-based IPMCs, migrating cations drag the water molecules along, causing osmotic pressure changes and therefore swelling of the polymer near the cathode and contraction near the anode. When a voltage is applied to the electrodes of an IPMC, cation flux-or the ionic current-is induced by the imposed electric field. The conceptual model is shown in Figure 5.1. IPMC material consists of an ionic polymer with covalently attached anionic groups that are balanced with mobile cations in water solution (or in other solvent). A brief overview of the common set of fundamental equations for both phenomena is introduced. 1 Electrical energy is converted into mechanical energy in the former case and mechanical energy into electrical energy in the latter case. Here, the fundamental theory of ionic polymer metal composite (IPMC) electromechanical and mechanoelectrical transduction or energy conversion is presented. Ionic Polymer Metal Composite Physics-based Transduction Models Thereafter, sample models with illustrations are introduced followed by a brief analysis of modeling results. The underlying equations and boundary conditions for the electromechanical and mechanoelectrical transduction model implementations are explicitly described first. COMSOL Multiphysics В® is a registered trademark of COMSOL AB.

#COMSOL 5.1 DIFFUSION HOW TO#

Step-by-step guidelines of how to implement a basic model of IPMCs in COMSOL Multiphysics В® modeling software are provided. Therefore, the FEM-based implementation of the model with all necessary boundary conditions is presented-this is called the modeling framework of IPMCs. To make the fundamental models of IPMCs more applicable in system and application designs, an explicit foundation of how to implement the equations is needed. Furthermore, freely available basic models of IPMCs would greatly benefit researchers and engineers by being a basis for developing more complicated models according to the research or design needs. Although the basic equations of the physics-based models of IPMCs have been established, it can take a significant amount of time and effort to implement them for calculations. In this chapter, we consider the latter, namely physics-based IPMC electromechanical and mechanoelectrical transduction models. The second category of the models explicitly considers the ionic flux inside the material. The first category is made up of rather empirical current-displacement relation models, often based on the electric circuit equivalent description. A broad way to categorize the existing models is by how the underlying physics is described.

#COMSOL 5.1 DIFFUSION SERIES#

Smart Materials Series Chapter 5 Modeling Ionic Polymer Metal Composites with COMSOL: Step-by-Step GuideДepartment of Mechanical Engineering, University of Nevada, Las Vegas, Nevada, 89154, USA.Д®-mail: Engineering Department, University of Nevada, Reno, Nevada 89557, USA.Д¬onsiderable effort has been put into modeling the physics of the electromechanical transduction phenomenon of ionic polymer metal composites (IPMCs).

Thank you all for your time, any help is appreciated.Kim, Chapter 5:Modeling Ionic Polymer Metal Composites with COMSOL: Step-by-Step Guide, in Ionic Polymer Metal Composites (IPMCs): Smart Multi-Functional Materials and Artificial Muscles, Volume 1, 2015, pp. The version of COMSOL IвЂ™m using is 5.1, if this is of any help.

Would love any help, advice or guides on how to solve my concerns and doubts above, everything you may teach me will be appreciated, thanks. I have some data that the University gave me to start my studies which are in a Microsoft Office Excel spreadsheet, and IвЂ™m interested about the possibility of importing that data into COMSOL. The reason for this is to represent the drop of water, from my studies above, as pear shape as possible and not just approximate it to a sphere for the studies.ДЈ. As another question, related to the same studies, I would like to learn if I can insert a geometry in which its contour/border changes over time (elongates, deforms, takes a non-spherical shape). Any diffusion tests/studies or tutorial about how to do them in COMSOL are welcome.Дў. I'm doing some studies on diffusion for a CO2 - H2O system in a drop of water, and would like to know if it is possible to do so in my version of COMSOL (5.1), and any advice or tutorial on how to do it. Hi, I'm looking for some help and advice, I have 3 issues that I would love to solve, all of them are related to one another.ДЎ.

Comsol 5.1 diffusion