linear phased array ultrasonic transducer
hi how can I simulate linear array transdcuer? any idea?
View ArticleHardware Question
I've read through several posts and am cognizant of the RAM/cpu core guidelines on performance. With that being said, is there a limit on the priority that should be placed on RAM/core when specifying...
View ArticleEuler angle
Hai I would like to know the Euler Angle Z-X-Z to be used for simulation in comsol for an equivalent yxwtl(-30,-44,90) rotation. Thanks in advance Gayathri
View ArticleFrequency Sweep
We have a combustion chamber (no flame yet). We identified the acoustic network in our actual(real) system by a loud-speaker, which is mounted underneath the chamber, and captured the response in 4...
View ArticleLamb wave in acustic module
I don't know if in 4.3 comsol's version there is in acustic module something to simulate the lamb wave's propagation with own equations inside or have I to create theese equations? Thanks a lot
View Articleacoustic module
Hello I want to model a combustion chamber that a loudspeaker installed in its bottom to stabilize thermoacoustic instability with COMSOL Acoustic module. In the first step(without considering the...
View ArticleCOMSOL error
Hello I'm solving a problem by using the Acoustic module. The problem is when I run the program I face with this error: Failed to find a solution for the initial parameter.Maximum number of segregated...
View Articlefar field in the acoustic module and Matlab
hi, I try to analize results of the given model:"Acoustic Scattering off an Ellipsoid" using matlab. I connected the matlab using livelink and took the far field pressure using the command: data =...
View Articlecoupling acoustic with fluid flow
hi, I need to use "acoustic" and "fluid flow" modules to solve my problem.the only common dependent variable in this two is pressure .i want to couple this two to reach pressure field.do you know how i...
View ArticleEiganvalues
hello dear, i am new in COMSOL what is the significance of eiganvalues while doing simulation in COMSOL 4.3b using Acoustic Module
View ArticleVibrating Pipe
Hi, all I am a Comsol novice user. I am going to simulate the vibrating pipe with the viscous liquid inside, but I have no idea How to set the wall pipe to vibrate. In detail, I would like to vibrate...
View ArticleApplying vibrations/sudden force on a liquid in a container
Hi everyone, I am trying to apply a vibration/sudden force to a liquid in a container. This liquid has a yield stress of about 0.6 Pa. I would like to know what vibrations/force can bring this liquid...
View Articleband gap phononic crystal help
Hi, I am new to Comsol and trying to calculate simple 2D, band gap but I am lost. Any instructions or tutorials please. Thank you.
View Articlehow to implement feedback control with a loudspeaker module in COMSOL ??
Hi, i'm Youngeun Cho in South Korea. Now, i'll trying to implement 'Direct impedance feedback control' used for the noise reduction method in an electroacoustic absorber system. Here, the velocity and...
View ArticleFar field plots in acoustic structure interaction module
Hi, I have been trying to generate far field plots in acoustic structure interaction module for a case similar to the tutorial model available in Comsol (Hollow cylinder). I defined an outer sphere as...
View ArticleHelp needed with model to find acoustic transmission loss of a membrane.
I've been trying to 2 weeks now to get this model working with no joy so far. It's a membrane with a mass attached to the centre. I have YM, PR & density for membrane & mass. I need to...
View ArticleUltrasonic Non Destructive Testing
Hello Everyone, It's about my graduate thesis, I ve been trying to make an analysis which is NDT. There is a specimen, transducer, and cylinder( for showing to cracks-voids) I can't send a sound from...
View ArticleHow to set a material's density is anisotropic ?
hi, I'm new in comsol I'm trying to define a material ,but its density is anisotropic , I don't know how to do with it. could anybody please help me with this?
View Articleultrasonic testing of steel by normal probe- wall echo
Hi, I am trying to simulate ultrasonic testing of steel by normal probe. A 2D model was built. The probe is defined as Lead Zirconate Titanate(PZT-5H) and generates a sine wave to the steel. Is there...
View ArticleUndefined value found in the equation residual vector.
I am trying to model a pem fuel cell. Although I have entered all parameters and values, i have some errors as follows; Undefined value found. - Detail: Undefined value found in the equation residual...
View Article