Coil inductance calculation
I used three methods to calculate the coil inductance value but got three different values, 1. Directly extract the coil inductance, namely mf, LCiol_1, 2. The ratio of the volumetric magnetic energy...
View ArticleRVS Measurement of a Transducer Under Different Pressure Values
Hi everyone, I want to simulate and measure the RVS (Receiving Voltage Sensitivity) of a spherical piezoelectric hydrophone. I created a spherical shell and a water domain covering that shell. I...
View ArticleWhere do I limit the range of dependent variables?
I am simulating a space-dependent 2D gas-solid reaction system, in which solids are reactants and products. However, solids do not participate in the reaction expression and therefore, the...
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Hello COMSOL Community,Are you planning to attend the online COMSOL Conference this year? Register by this Friday, September 4, to save $100 on your registration fee! The COMSOL Conference 2020 North...
View ArticleDoubt regarding periodic boundary condition error
Hello, I am trying to make a calendered mesh and supply some electric voltage to it to see electric field contours in the nearby region. Instead of making the full (large) mesh, I made a unit cell and...
View ArticleReferencing predefined variables without prefix
Hello,Is it possible to reference predefined variables without always having to put the module prefix in front? For example, if I have only one physics module such as the MFH module, instead of writing...
View ArticleControl variables with Matlab LiveLink
Hello, I am currently working in a topology (2D) optimization problem, and my goal is to get the optimum distribution of a material parameter (magnetic permeability). Basically, i have a vector of...
View ArticleHow to Find Reaction Forces for a Cantilever Beam?
Hello everyone,I am working on modeling the mechanical behaviour of a cantilever under a uniform distributed load and I built the model attached for this. I have gone through many tutorials and watched...
View ArticleDerived Values at the Nodes
Is it possible to derive a value at each node of my mesh without having to create points for my geometry? Ultimately I'm trying to derive a nodal value, call it X, at every node of my mesh using a...
View ArticleHow to add coupled boundary condition ?
HiI am working on a diffusion/stress coupled problem by using species transport/solid mechanics modulues in COMSOL.I tried to add a concentration BC, which is a function of the hydrostatic stress...
View ArticleFlux definition in Transport of Dilute Species Module
Hi COMSOL users,In the Equation View of Transport Properties under Transport of Dilute Species Module, there are two kinds of flux definitions. One is defined on all the boudaries, called Normal...
View ArticleRough surface
Hello!I'm trying to model transfromer winding with paper insulation of turns. When I draw an insulation, the resulting object intersects the turn because they both are drawn rather roughly using fixed...
View ArticleComparing two 2D plots
Hi,When I want to compare two 2D plots of two different solutions performed sequencially, I export the first plot into a text file and import it after the second solutions is done. Then I compare...
View ArticleDISTANCE BETWEEN PORT AND SURFACE AFFECTING MY RESULTS
Hello everybody.It would be great if anybody could give me an input. I simulate the light reflected from a copper grating. I use a 2D model in which the system consists copper substrate with one...
View ArticleThermal Impedance - Frequency
I wonder if there is a way to obtain a Thermal Impedance vs. Frequency graph from a system that involves heat transfer in a flowing fluid.
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