I dont think 2d axial symmetry, extruded into 3d, would be able to suit my needs. This talk presents the methods used to introduce undergraduates to comsol multiphysics and the problems they solve in a research project format. I tried to do an arrow line plot in 3d over total heat flux but the arrows appearing are not physically correct, since it by default plots. Comsol multiphysics is a crossplatform finite element analysis, solver and multiphysics simulation software. Simulation of an axialradial ammonia synthesis reactor by linking comsolmatlab software. Use of comsol multiphysics in undergraduate research projects. The axial symmetry, stressstrain application mode 230. The structural mechanics module includes both predefined material models to choose from and the ability to enter userdefined material models, depending on the nature of your analysis. The image of a kite when it is subject to axial symmetry about line ee. Browse the threads and share your ideas with the comsol community. The truncation can therefore be evaluated in an axisymmetric analysis which then can be used to assure a good result in 3d. I encountered a problem when modeling heating of a 3d copper cylinder in 2d axial symmetry. I of radius ri, separated from the exterior by two mold walls, upper and downer, of external radius rwu and rwd respectively figure 2.
Comsol is one of the best software to date for multiphysics applications. The 2d model can assess the effects of cone angle, cone angle difference between the cones, crowning of the cones, oil viscosity, oil density, applied. An axial symmetry is the mirror image of a plane object about a line. Ac power electromagnetics axial symmetry, stressstrain 57 s v v loudspeaker driver in a vented enclosure 175 pressure acoustics 35 min muffler with perforates 193 pressure acoustics 27 min v v saw gas sensor 210 piezo plane strain 42 s. By using a geometrically nonlinear formulation, you can analyze situations with arbitrarily large rotations and strains. Comsol software users who are onsubscription should submit their questions via the support center for a more comprehensive response from the technical support team. It is very easy to learn provided one must know the underlying theory behind the simulation, i. Nov 03, 2009 2d axial symmetry to simplify the calculations i drew a model of my setup in 2d axial symmetry. A 2d axisymmetric and a simplified 3d fluidstructure interaction multiphysics model with an arbitrary lagrangianeulerian mesh is developed in the commercial software comsol multiphysics 6. Hello, i want to find the magnetic field from a magnet that has the shape of a cylinder. There is a wide variety of material models to accurately. Nodes defines the node numbering increment when defining new. With more than 30 addon products to choose from, you can further expand the simulation platform with dedicated.
Force at a point in 2d axial symmetry comsol multiphysics. In comsol, you establish the geometrical symmetries by building a model with some known nfold symmetry, and you establish the physical symmetriesantisymmetries by selection of the proper bcs. Comsol 2d axial symmetry for light diffraction physics. To download the mphfiles, log in or create a comsol access account that is associated with a valid comsol license. Meaning that what i plot is radial component of heat flux in x. Many comsol multiphysics physics interfaces are available in axisymmetric versions and take the axial symmetry into account. A custom interface is available for modeling the trajectory of electrons and ions in an.
Simulation of an axialradial ammonia synthesis reactor by. Warning your internet explorer is in compatibility mode and may not be displaying the website correctly. Axial symmetry article about axial symmetry by the free. Comsol provides an ide and unified workflow for electrical, mechanical, fluid, acoustics and chemical applications. Lets assume your model is a periodic structure which has an efield running along the extruded line y, and is incident in z into the page. Axial symmetry, stressstrain 15 min v v v loudspeaker suspension 145 pressure acoustics. Ive scoured the comsol forums, and while they are normally very helpful thank you to everyone who takes the time to respond, you arent just helping the op all the advice on symmetry is very vague and esoteric to a. Comsol family, it provides a library of prewritten readytorun models that make it quicker and easier to. Comsol software users who are onsubscription should submit. For users of the structural mechanics module, comsol multiphysics version 5.
Symmetry means that a model is identical on either side of a dividing line or plane. Symmetry and antisymmetry planes or lines are common in both 2d and 3d models. Whether youve loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. Please login with a confirmed email address before reporting spam. Comsol is the developer of comsol multiphysics software, an interactive environment for modeling and simulating scientific and engineering problems. With comsol multiphysics, you will be able to account for coupled or multiphysics phenomena. The truncation can therefore be evaluated in an axisymmetric analysis which then can be used to assure a.
I have looked a bit a 2d axial symmetry but the symmetry does not seem to be extruded from a line to a plane when extruding the geometry to 3d. I am trying to mesh a 3d integrated concrete block model using comsol software. The gravity force was added to the water to involve the buoyancy force. Comsol 2d axial symmetry for light diffraction thread starter andrewszelc. Some of the distinct advantages i have experienced are. Comsol multiphysics software understand, predict, and optimize. For example, a baseball bat without trademark or other design, or a plain white tea saucer, looks the same if it is rotated by any angle about the line passing lengthwise through its center, so it is axially symmetric. It allows conventional physicsbased user interfaces and coupled systems of partial differential equations pdes. Overview of the comsol multiphysics application modes 2. For a comprehensive analysis, use the comsol multiphysics software and the acdc module to see how multiple physics affect your design.
Use of comsol multiphysics in undergraduate research. To define axial symmetry, set the main parameters in the following fields of the axial symmetry dialog. Comsol multiphysics graphical user interface, please refer to the comsol. So if i could define a mirror plane at y0, i would only need to calculate the field distribution for half the computational cell. In the axial symmetry we find the same phenomenon as in an image reflected in the mirror. Browse all of the new features and functionality in the structural mechanics module below. The axial symmetry happens when the points of a figure coincide with the points of another one, taking as a reference a line that is known by the name of axis of symmetry. Comsol multiphysics an overview sciencedirect topics.
This shows the ability of the software to model the twophase quenching problem without customizing the softwares equations. The comsol discussion forum covers a wide variety of simulation topics. Adding and customizing expressions in the physics interfaces allows for freely coupling them with each. Comsol software users who are onsubscription should submit their questions via the support center for a more comprehensive response from the technical. Browse solutions to common modeling questions, check for software updates, and log into comsol access to manage your active technical support cases. Foad farivar a and habib ale ebrahim b a chemical engineering department, petrochemical center of excellence, amirkabir university of technology, tehran1587544, iran.
The geometrical model will be revolved around its axis of symmetry that is exactly in the centre of the aperture centre of the aperture to the aperture edge 7. This enormously saves computer power and requirements on the memory by modeling in 2d instead of 3d. However when i solve the problem in comsol for the circle i drew from question 3, and i use an arrow plot, i see that the magnetization is always pointing to the right instead of pointing to the right for r0 and to the left for r comsol software. At the top of the water tank, a convective heat transfer and an open boundary were. The truncation, referring to the position of the outer boundaries of the finite element model, is evaluated in three dimensions 3d by the use of an analysis in axial symmetry. Comsol has been the unique simulation power offered which allows the present day. Other readers will always be interested in your opinion of the books youve read. How to take advantage of symmetry comsol multiphysics. The axial symmetry, stressstrain application mode 221. New features in structural mechanics module of the last version 3. The particle tracing module is a general purpose, flexible tool that allows you to trace the trajectories of particles in the presence of an external field. The displacement of the donor from the center of the circular qr breaks the system axial symmetry of the structure and provides the localization of the lowest rotational state, manifested in removing of the periodic degeneration of two lowest levels and in a substantial increase of the nonvanishing gap between them as the distance from the position of the donor to the center is increased. Laminar flow reactor with axial and radial diffusion the governing equations for this problem can be derived from a shell balance on a ring shaped. The initial temperature was specified to 550oc for both rods.
Numerical simulation of laminar flow through a pipe using. The software described in this document is furnished under a license agreement. The comsol multiphysics fea software comes with predefined physics interfaces with specialized settings, making it easy to set up and run analyses. In conclusion, design challenges between physical effects interactions can be solved by the comsol software. Comsol multiphysics is a generalpurpose software platform, based on advanced numerical methods, for modeling and simulating physicsbased problems. With this assumption, the foaming process takes place in a 2d region semicircle. You will need an onsubscription comsol license attached to your comsol access account or a software.
Comsol 2d axial symmetry for light diffraction physics forums. With the advent of sophisticated software, however, it is possible for undergraduates to solve meaningful transport and flow problems in two and three dimensions. I was trying to run 2d axial symmtry only to rotate 90 degree not 360 degree but i do not know how to do it. Most electromagnetic components, devices, and products are affected by another branch of physics, whether it be heat transfer, structural mechanics, or acoustics, to name a few. An axial symmetry axis is chosen to save memory and computational time. The comsol multiphysics software offers this level of flexibility with its builtin equation interpreter that can interpret expressions, equations, and other mathematical descriptions on the fly before it generates the numerical model.
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