Hello, topics about simulating CMUT using COMSOL, thanks!
Hello, thanks for reading my message. My name is Wang Jiujiang and I am now a 1st year PHD in University of Macau. My present interest is CMUT and after reading your discussion in COMSOL community and...
View ArticleAbout impedance measurement
Hello, I am going to build up a model of Piezo and two others(pmma & Ti) materials (Frequency Domain Study) using Comsol 4.3a acoustics module. But I can't find out the impedance of piezo...
View ArticlePhase response and using fourier transforms to get time responce
Hi all. I've been operating under an assumption thath i'm begining to question. Here it is What i want to do, 1. calculate the frequency domain response of a room. Then i want to extract the time...
View ArticleModeling elastic waves in a solid mechanics study
Hi, I'd like to ask a question concerning the modeling of elastic waves in the structural mechanics module. The geometry is a simple 3D beam, free on all sides. (file attached) My goal is to study the...
View ArticleOutdoor sound propagation, windpower.
Hello! Does anyone have experience with outdoor sound propagation in Comsol. I have been experimenting with a couple of scenarios in 2D with one windmill and 10 "houses" at a distance, and I was...
View ArticleHow to use simultaneously straight wave and oblique wave radiation in COMSOL...
Hi everyone! I am using COMSOL to simulate the acoustic lens system. I am experiencing problems in the use of simultaneous straight waves and oblique waves radiation on the same plane in Acoustics...
View ArticleHorn
Dear All, I am interested in doing acoustic simulation of horn, my input will be 2-d horn geometry , input acoustic pressure, frequency. and now I am interested in finding out the sound pressure...
View Articleconversion of given simulation in to 4.0a or lower version COMSOL
Dear all, I will be very much thankful if you solve given simulation into lower version COMSOL (4.0a or lower). Please find attached COMSOL file.. Thanking You
View ArticleEffect of sound pressure on refractive index/density
Hello fellow Comsol users, Most of my experience comes from structural mechanics and fracture and would like to ask a little help regarding pressure acoustics. The presence of high and low pressure in...
View ArticlePlease send me tutorial for ultrasonic wave propogation through liquid
I need tutorial on Ultrasonic wave propogation through liquid.
View ArticlePropagation loss in SAW devices
Hello! I use Comsol for SAW device simulations and design some time domain models for SAW delay line. Results (impulse responses) are rather good. Now I want to introduce propagation losses in my...
View ArticleIs the problem positive definite? Floquet periodic boundary conditions or PML...
Hello, I am doing some elastic wave simulations using solid mechanics module and piezoelectric module. And sometimes the DOF of my models are quite large so that I have to choose the solver manually to...
View ArticleCAD data for KEMAR
Hello. I have seen papers with scans of the KEMAR manikin, such as from Mads Jensen when he was at Widex. I am in need of CAD data (e.g. STEP file) for the KEMAR head. Does anyone have such data? Would...
View ArticleAcoustic resonances in a room with a Perfectly Matched Layer
Hello. I'm using COMSOL for an acoustics project, and I have trouble setting up the PML to work perfectly. My case: A rectangular room with totally absorbing ceiling. The room is simply a block, and I...
View Articleboundary setup in Acoustic Module - Linear elastic or Impendance
Dear All, I have a question about the boundary condition setup in my simple 2D symmetric acoustic module. I would like to simulate a transient pressure distribution in a small glass dish filled with...
View ArticleConfine Modes
HI, I am doing a structure eigen-mode analysis. How can I only see the longitudinal mode and filter out other modes? Thank you
View ArticleMie scattering in 4.3
Hello, I have already seen some discussion about mid scattering of a gold nanosphere. But I the discussions I have consulted, no one has yet implemented a mie scattering program in Comsol 4.2 or 4.3...
View ArticleVibrating horizontal plate.
Good Evening everyone, I have a really simple question, I'm sure someone knows the answer to my problem. I'm trying to make a model of a plate, platform, anything you want to call it, that vibrates...
View ArticleI would like to express ocean.
Hi, I would like to express ocean for PDE. However, the COMSOL site does not open model for Ocean, so i ask for help. I found some paper in COMSOL Multiphysics User's Conference 2005 which is Wave...
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