Volume fraction of polystyrene stays [no movement]
Dear all, I am modelling the separation of suspended particles using ultrasonic standing waves. I am making a study with step 1 frequency domain and step 2 time-dependent solution. I have already...
View ArticleSeismic wave (P-wave) excitation in a fluid-saturated porous media
Dear users, can anybody help me choose appropriate physics for seismic wave excitation. In addition to that, I would also like to simulate pressure and displacement caused by the wave in the...
View ArticleToneburst signal
hello, How could I create a toneburst exitation signal or a simple sinus exitation wave signal in comsol 3.5a? Thanks
View ArticleEigenvalue Solver Warning
Hello, I am running the eigenfrequency study in the Acoustics module, and received a warning in Comsol that I have previously not encountered:"Extra interior eigenvalue found. Decrease the size of the...
View ArticleAcoustic-Comsol
hi, i need to model phase array transducer in comsol acoustic module. i don't know how to inter phase in comsol. i couldn't find any place for getting any phase? can i model it in pressure boundary...
View Articlephased array transducer in frequency domain
Hello I am trying to do a ring piezo transducer phased array simulation. it has 8 rings. i successfully have done the design. I am doing a harmonic analysis. I am facing problem with one thing. For the...
View Articlelinear phased array ultrasonic transducer
hi how can I simulate linear array transdcuer? any idea?
View ArticleHow to specify time lag in linearized Euler, transient module of COMSOL?
Hi, I am trying to solve linearized Euler equations in time domain. However, I have a source term expressed in terms of pressure but lags by a time 'tau'. How do I specify that in COMSOL? The source...
View ArticleIntroduction of BEM solver for Acoustics
Hello, I see from the recent presentation by Mads J. Herring Jensen at the COMSOL conference in Boston in October (uk.comsol.com/paper/download/257851/jensen_presentation.pdf) that there is an...
View ArticleDefining flow resistivity of an interior perforate plate
Hi there I am running simulations on a wind tunnel with micro mesh plates around the test rig. I am trying to find the appropriate parameter for the flow resistivity but I am having trouble finding an...
View ArticleA problem of "Material Contents"
While trying to learn the example of Acoustic-Structure Interaction, I am getting a problem. I do it myself. At the Add Material window, I select Aluminum 3003-H18. After that at the Material Contents,...
View ArticleAcoustic-Comsol
hi, i need to model phase array transducer in comsol acoustic module. i don't know how to inter phase in comsol. i couldn't find any place for getting any phase? can i model it in pressure boundary...
View ArticleToneburst signal
hello, How could I create a toneburst exitation signal or a simple sinus exitation wave signal in comsol 3.5a? Thanks
View ArticleHow to calculate photonic band gap, transmission and reflection spectra?
We want to get photonic band gap, transmission and reflection spectra of 1D or 2D PC. Could you help me how can I obtain band gap and Transmission/Reflection spectra of 1D or 2D photonic crystal? Or...
View Articlephased array transducer in frequency domain
Hello I am trying to do a ring piezo transducer phased array simulation. it has 8 rings. i successfully have done the design. I am doing a harmonic analysis. I am facing problem with one thing. For the...
View Articlelinear phased array ultrasonic transducer
hi how can I simulate linear array transdcuer? any idea?
View Articlepiezoelectric cylindrical tranducer
Hello, I am currently working in COMSOL. I have built a piezoelectric cylindrical transducer using piezoelectric devices module. Following are my questions How can I find the breathing mode (lowest...
View ArticleDefining flow resistivity of an interior perforate plate
Hi there I am running simulations on a wind tunnel with micro mesh plates around the test rig. I am trying to find the appropriate parameter for the flow resistivity but I am having trouble finding an...
View ArticleTonpilz Transducer
Hi, Has any one done analysis of tonpilz transducer using comsol? If so, how is this matching with the fabricated transducer? I tried in various versions of comsol both in 2D and 3D but didn't get good...
View ArticleManipulation of imported CAD files with Java API
I am using the COMSOL Java API to create an acoustics model programmatically. In the model, I want to import a CAD file (specifically a .sldprt or .asm from Solidworks), and then automatically assign...
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