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COMSOL 5.0 and 5.1 error on iOS
Hi everyone, I was using COMSOL on windows. I bought a mac and install COMSOL. But it gives an error:"An unexpected error occurred." Open log file Ok at Log file: ERROR Unhandled event loop exception...
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heat transfer with a solenoid
Hi guys, I'm new into COMSOL so these questions might be quite silly. I was trying to simulate the inductive heating to a stainless steel washer using a solenoid. In my model I have an array of circles...
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Nonlinear Optics not converge
Hello everyone, I am trying to use Comsol to simulate a nonlinear optics problem using in the frequency domain. More specifically, I use n=n_0+gamma*power as the form to include third nonlinearity....
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Table does not contain filled data
I swept two parameters and want to observe their common effect of S-parameter. A grating waveguide model has been used here. But when I use Derived Values to export data to a table and want to draw a...
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How to measure the gain on an antenna in comsol?
Hi Folks, I wanted to know how can i find the gain of an antenna. I am using one of the examples in comsol website, dipole antenna. Here is the link for it:www.comsol.com/model/dipole-antenna-8715 How...
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Comsol 5 in 4.4
Hello, I want to open the model created using comsol 5 in comsol 4.4 Can anyone suggest me any ideas? Thanks
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Thermoelastic (TED) Dissipation in Clamped-Clamped Beam. 2D and 3D don't match.
Hello, I am using COMSOL 5.0 to model Q_TED in a Clamped-Clamped Beam for MEMS applications. I use the same parameters in 2D and 3D model and get different results. I get Q_TED (te.Q_eig) equal to 5.5k...
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Truss structure optimization
hi all, I'm kinda a newbie and i'm trying to optimize a simple 2D truss structure using optimization solver. the objective function is total strain energy of the structure (mod1.truss.Ws_tot) and the...
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user defined convective heat transfer coefficient for solid-liquid interface
Hi, How can I give a user defined convective heat transfer coefficient, h, to COMSOL for a solid-liquid interface? The inlet temperature of the fluid and its flow rate are known. The h value I want to...
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Basic High Frequency S-Parameters
This is my first time using COMSOL so this may be too basic of a question. I just downloaded COMSOL 5.2 and ran a few basic tests to make sure I was setting up the S-Parameters correctly. I chose the...
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Convergence and time step solver
Hi all, How's everyone? :D Anyway, Just want to know, what does that curvy distorted line at the end of the diagram shows? Does it mean I have instability convergence? too large time step? how do I...
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Regarding Contact modeling in time dependent solver for the simulation of...
Dear all, I am working on the simulation of incremental sheet forming process. It is very non linear structural mechanics problem in which i make a contact between tool and sheet with time dependent...
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Unable to plot displacement vs time graph
Hello there, I am using Structural Mechanics and I am able to simulate my design. I was able to get the deformation due to Internal stress and strain. I am now getting problem in plotting the graph. I...
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Attenuation Constant for waveguide
Hi, I try simulate rib waveguide with silicon as a substrate, lower cladding silica, core glass and upper cladding air in order to find attenuation constant with respect to the lower cladding...
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multiple mesh size
Hi every one I am new in comsol. I am using Version 4.3. I have a 2D geometry. one part is very thinner than the rest of the Geometry. The mesh size is different for part 1 and part 2. I should...
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Bond wire - Deformation and Parametric sweep
Hello I designed an Al Bondwire on a Silicon chip with DBC. The physics were heat transfer in solids, solid mechanics and thermal expansion. I chose the copper base for the Inward heat flux with h = 10...
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Integrate Series of Cut Planes
I want to integrate a series of xy cut planes in a 3D model. I have been doing this manually changing z each time: z=0,100,200,300....Ideally I would like finer increments and a more automated way to...
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Heaviside problem
Hello for everybody , I am trying to make a square pulse train, and was read a lot of forums for this..but unfortunately I didn't get pulse train...just one 5us pulse with DV amplitude.. My rectangular...
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Stress Error!
Hello Sir, I am working on energy harvesting. it's multilayer beam. when I apply load on edge... I can't find the stress on upper layer... iT's shown under the upper layer. Would you please tell me why...
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What if turbulent flow is modeled using laminar flow
Dear all, I have the following questions: 1) What if a turbulent flow is modeled using laminar flow? 2) How different will the results of turbulent flow and laminar flow models be (note that the...
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