Jul 26, 2010 · Alan, this is not an artistic endeavor; the CAD file goes into a finite element program, COMSOL, where the distribution of an electric field on the spinal cord is simulated. Then it goes to a neural circuit program where we try to figure out the effect on pain management in the lower back and legs of different electrode designs and parameters.
Apr 03, 2014 · The example given is for the acoustics module of COMSOL Multiphysics software, but can be used as a starting guide to any of COMSOL’s packages (fluid flow, heat transfer, etc.). Learning COMSOL: Google search tutorials & the COMSOL User’s Guide for the version you’re using (4.4, etc.) Obtaining a Hammer Account. Email [email protected]
Introduction A COMSOL® application is an intuitive and efficient way of interacting with a COMSOL Multiphysics® model through a highly specialized user interface. This book gives a quick overview of the Application Builder desktop environment with examples that show you how to use the Form editor and the Method editor.
Multiphysics COMSOL®V E R S I O N 3 . 5USER’S GUIDE Part number: CM020002How to contact COMSOL:BeneluxCOMSOL BV Röntgenlaan 1 9 271 9 DX Zoetermeer The Netherlands Phone: +31 (0) 79 363 4230 Fax: +31 (0) 79 361 4212 [email protected] www.comsol.nlDenmarkCOMSOL A/S Diplomvej 376 2800 Kgs.
In COMSOL Multiphysics ®, the Graphics window provides you with interactive graphics for the geometry, mesh, and results of your model. In addition, the Graphics window toolbar provides you with the functionality to customize your visualization. These tools enable you to perform several operations, such as changing the view; moving around, rotating, and zooming in and out of the geometry; changing the graphics by using scene lighting, transparency, or wireframe rendering; and hiding ...
infinite at the vortex core and causes the core rotate as a solid body. The flow in this core region is no longer considered irrotational. Outside of the viscous core potential flow can be considered acceptable. Integrating the velocity we can solve for ! and !!=K" and !="Klnr (4.28) where K is the strength of the vortex.
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When using Form Union, the software generates a composite object that consists of connected domains separated by shared boundaries between the neighboring entities. When using Form Assembly, the software instead groups the objects into a single object that contains a collection of disconnected domains. In the COMSOL Multiphysics ® software, the Graphics window provides you with interactive graphics for the geometry, mesh, and results of your model. In addition, the Graphics window toolbar provides you with the functionality to customize your visualization. These tools enable you to perform several operations, such as changing the view; moving around, rotating, and zooming in and out of the geometry; changing the graphics by using scene lighting, transparency, or wireframe rendering; and ...
comsol 高级网格划分简易教程.pdf,COMSOL Multiphysics™ A d v a n c e d M e s h i n g M i n i c o u r s e V E R S I O N 3 . 3 How to contact COMSOL: Germany United Kingdom FEMLAB GmbH COMSOL Ltd. Benelux Berliner Str. 4 Studio G8 Shepherds Building COMSOL BV D-37073 Göttingen Rockley
These small rotating motor can be used in pumps, water heaters, lawnmowers, appliances and more. You are sure to find the small rotating motor that will get the job done. These small rotating motor are powered by an alternating current, which is advantageous for many everyday and industrial applications when compared to a direct current. You ...
The rotate function rotates a graphics object in three-dimensional space. rotate(h,direction,alpha) rotates the graphics object h by alpha degrees. Specify h as a surface, patch, line, text, or image object. direction is a two- or three-element vector that describes the axis of rotation in conjunction with the origin of the axis of rotation. The default origin of the axis of rotation is the center of the plot box.
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COMSOL Multiphysics and COMSOL Server: Performance improvements for handling of large models and faster load and save of model MPH files. Model methods for automating repetitive operations are available directly from the Model Builder. Using Selections as a plot attribute. Customized actions when clicking on graphics objects. All objects have a natural frequency or set of frequencies at which they naturally vibrate. The quality or timbre of the sound produced by a vibrating object is dependent upon the natural frequencies of the sound waves produced by the objects. Some objects tend to vibrate at a single frequency and produce a pure tone.
4.4 Rotating Discs 4.4.1 The Rotating Disc Consider a thin disc rotating with constant angular velocity , Fig. 4.4.1. Material particles are subjected to a centripetal acceleration a r 2 r . The subscript r indicates an acceleration in the radial direction and the minus sign indicates that the particles are
expected thrust profile for rotating objects. Standoff directed energy schemes that deliver at least 10 MW/m2 generate significant thrust for all but the higher conceivable rotation rates. Keywords: DE-STAR, DE-STARLITE, Directed Energy, Laser Phased Array, Planetary Defense, Rotation Periods, COMSOL
The thermo-mechanical constitutive model is implemented in COMSOL Multiphysics to study the complex deformation based on temperature and heat generation. The actuator design is optimized for Cost of transport (COT) using the Derivative-free Monte-Carlo method inbuilt in COMSOL Optimization module.
Buckling Analysis J.E. Akin Draft 10.2 Copyright 2009. All rights reserved. 183
COMSOL Guidance --Some Simulation Results in SPP Yanxia Cui Jan. 2008 An Example A scattering prob COMSOL Guidance --Some Simulation Results in SPP Yanxia Cui Jan. 2008 An Example A scattering problem scTE_PML.mph MODULE RF Module The RF Module provides a unique environment for the simulation of electromagnetic waves in 2D and 3D.
Apr 16, 2020 · The details of object caching are subject to changes between different Python versions and are not guaranteed to be system-independent, so identity checks on immutable objects like 'hello' is 'hello', (1,2,3) is (1,2,3), 4 is 2**2 may give different results on different machines. In some Python implementations, the following results are applicable:
COMSOL NEWS 2 0 1 1 // 49 AEROSPACE em a, neeL, erLan Remove the Iron The ultimate goal is to obtain a specific magnetic flux density within the air gap while minimizing rotor mass and main-taining a level of useful inertia. Using COMSOL, we plan to study a different approach taking advantage of an interest-ing phenomenon. Like electrical circuits,
Sep 24, 2018 · I'm trying to simulate a rigid object moving in a rigid fluid-filled channel in COMSOL. The inlet provides a velocity for the non-compressible fluid, which pushes the object. No problem so far, this works fine for time-dependent studies in 2D. The issue is that I want to move to 3D, and I think that will become very computationally expensive.
Supporting Current Energy Conversion Projects through Numerical Modeling. NASA Astrophysics Data System (ADS) James, S. C.; Roberts, J. 2016-02-01. The primary goals of current energy conversion (CEC) technology being developed today are to optimize energy output and minimize environmental impact.
COMSOL, the leading provider of multiphysics modeling and simulation software, has released version 5.3 of COMSOL Multiphysics software, is a general-purpose software platform, based on advanced numerical methods, for modeling and simulating physics-based problems.
In order to reduce our military's vulnerability to high energy laser weapons, one possible countermeasure is to rotate or rock the object itself when it is hit by the laser beam. The main purpose of this thesis is to investigate the relationship between the speed of a rotating/dithering laser beam and the maximum temperature rise induced by the ...
Kinetic Energy of Rotation Consider a rigid object rotating about a fixed axis at a certain angular velocity. Since every particle in the object is moving, every particle has kinetic energy. To find the total kinetic energy related to the rotation of the body, the sum of the kinetic energy of every particle due to the rotational motion is taken.
For any rotating machinery model in COMSOL Multiphysics, you should finalize the geometry using Form Assembly and create identity pairs. To reduce the amount of identity pairs, both the stationary and rotating parts of the model are recommended to be consolidated into single domains.
Acoustics Module Updates. For users of the Acoustics Module, COMSOL Multiphysics ® version 5.5 includes a new Elastic Waves, Time Explicit Physics interface, multiphysics couplings for acoustic-structure interaction with the time explicit formulation, and a Port boundary condition for the Thermoviscous Acoustics, Frequency Domain interface.
If you toss a cellphone, tennis racket, wingnut, cereal box, or any object with 3 axes of rotation in the air, it will demonstrate this interesting and unusual effect… A Simulation App for Helical Spring Design and Analysis
Tools for Designing and Optimizing Multibody Systems. The Multibody Dynamics Module is an add-on to the COMSOL Multiphysics software that provides an advanced set of tools for designing and optimizing multibody structural mechanics systems using finite element analysis (FEA).
First, using a helix primitive object, we show you how to divide and conquer the meshing for a relatively complex geometry by splitting it into smaller, simpler domains. Next, using the geometry from the shell-and-tube heat exchanger tutorial model, we demonstrate exploiting the symmetry of an object to simplify a simulation.
These include microwave heating, induction heating, rotating machinery, fluid-thermal interactions for laminar, nonisothermal and turbulent flow, and fluid-structure interaction. A major addition to the COMSOL Multiphysics graphical user interface is the Model Tree.
The apparatus shown at right has a set of pendulums of different lengths attached to the same shaft via rods that rotate with the shaft. On the far end of the shaft is a pendulum with much larger mass, similarly attached. The oscillation of the massive pendulum tends to rotate the shaft at an angular frequency ω = (g/L) ½, where L is its length.
Get inspiration and modeling how-tos on the COMSOL Blog. ... tennis racket, wingnut, cereal box, or any object with 3 axes of rotation in the air, it will demonstrate ...
for the Author’s earlier work—Heat Transfer Modelling Using COMSOL: Slab to Radial Fin [1]. Thus, the contents of this publication are complementary to the earlier one, with minimum overlap between the two. This also means that most of the examples used in this work are the same as in the earlier one,
initially perpendicular line segments. If you apply a force to a solid object you may end up simultaneously translating, rotating and deforming the object. The vector function which describes the difference between the initial position and the final position of each point in the object is. If we take the gradient of u we end up with a tensor.
Sep 24, 2018 · I'm trying to simulate a rigid object moving in a rigid fluid-filled channel in COMSOL. The inlet provides a velocity for the non-compressible fluid, which pushes the object. No problem so far, this works fine for time-dependent studies in 2D. The issue is that I want to move to 3D, and I think that will become very computationally expensive.
New Rotate, Move, and Copy Options. There are now more ways to rotate 3D geometry objects with the Rotate feature: you can choose to specify an axis and rotation or to specify Euler angles. This option is also available in Work Plane features defined using the Transformed plane type and in the Part Instance nodes in the Position and Orientation of Output section.
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COMSOL, the leading provider of multiphysics modeling and simulation software, has released version 5.3 of COMSOL Multiphysics software, is a general-purpose software platform, based on advanced numerical methods, for modeling and simulating physics-based problems.
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