Thinckness of IDT fingers
Hello, i am recently learnning the surface acoustic wave devices. Now, I am confused about that how to set the thinckness of IDT figers zero?
View ArticleCreate a new geometry shape in Comsol
Hello, I want to insert the biconcave shape of an erythrocyte in comsol. I have the equations of the geometry but I don't know how I can inserted in comsol to create the geometrical shape. Thank you Elina
View ArticleTemperature variation
Please , i am simulating 3D model , and i can not see the temperature variation , only Th is given as results. velocity and pressure are calculated correctly.Thanks in advance.
View ArticleShorted coil in comsol
I am using comol 5.5. Can you please help me to create a shorted coil of 10 turns in comsol with current 1A.I tried the helix. but i cannot short the ends.
View ArticlePeng Robinson EOS Real Gas
Dear allI am trying to implement a real gas equation of state, to do that, I created several functions, variables, compossed functions, conditional statements in the material section. These relations...
View ArticleThe simulation of irreversible electrochemical reaction
Hi,I am using COMSOL 5.4 and I met a problem in Electroanalysis module. The result I try to get is the cyclic voltammogram of a one electron transfer irrversible electrochemical reaction. The module...
View ArticleShorting a coil and applying current
I want a shorted circular coil of 4 turns made of copper material. I am also applyng a ac current of 2A, 10Khz frequency to the coil. As it is not possible to physically join the two ends of coil in...
View ArticleAcoustoelastic effect [ultrasonic wave propagation]
Hi,I am using COMSOL 5.5.I would like to know if (Physics: Elastic Waves, Time Explicit ) is able to simulate the acoustoelastic effect "change in the aoustic wave velocity due to stress" of an...
View ArticlePhase Angle
How can I calculate phase angle at the output ports for 2D model of 2x2 MMI coupler?
View ArticleBoundary Remain at Current Position
Hello,I am running a simulation of a small nanostructure (a 5 x 50 x 300 nm bar) with solid mechanics and an additional PDE. I have broken my simulation into two parts, an initial relaxation study,...
View ArticleHow to eliminate pressure gradient when modeling electroosmotic flow in a...
Hi,I am trying to model a completely electroosmotic (EO) flow in a microchannel where a miscible displacement of oil with water occurs. I believe all other set ups are correct but there is probably...
View ArticleDiffusion of a redox active molecule
Hello, I am trying to model the diffusion of a redox active molecule. I tried to use the Electroanalysis physics but I am not sure how to choose my geometry and reaction. I tried choosing a quartre...
View ArticleDamping factor Helmholtz equation
Dear Madame/sir,Currently I am studying the Helmholtz equation. From the theory of electromagnetic waves I understand that the imaginary part of the complex wavevector causes damping in the system....
View ArticleSymmetry in Stationary Magnetic Fields
I am looking to utilise symmetry with a magnetic fields simulation in order to reduce model complexity. The attached models are much simplified version of the actual design I am simulating, but are...
View ArticleDifference between ('3D cut points datasets' + plot by the '3D cut points...
Hi I want to evaluate the displacement at a point on a shell of a 3D mode, first I use the a point graph and choose the datasets to the solution, then choose the point on selection and choose the...
View ArticleOnly time derivatives involving grid time are allowed
When I use the ODE equation and the heat transfer module and the solid mechanics module, error reporting: only time derivatives involving grid time are allowed. After the solid mechanics module is...
View ArticleAdd Material COMSOL
Hello I have to do a study and I need to model a pipe with API 5L X70 steel with COMSOL Multiphisics. Please, I would like to receive instructions if there is such material in the library or how it...
View Articlepost processing acoustic structure interactions data
Suppose I have time dependent data for a waveguide deformation on solid.disp. Now I am into another time dependent solution . I want to use the deformation data (solid.disp) at each time step of this...
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