Out of memory
HI, Since you are using a 2 GB system it might not be able to accommodate the entire solution. Try with a system 4 GB or above. Or what you can try doing is go for a coarse or coarser meshing , your...
View ArticleSymmetric Stress ,Without Fixed Constraint
Hi guys, I have a symmetric structure which is imposed by symmetric stresses , and i wanna know the displacement of top point of this model without any fixed constraints. But it cannot be solved...
View ArticleSemiconductor module
I have used the semiconductor module to model the charge extraction from a layer of semiconductor sandwiched between two schottky contacts for a given charge carrier generation profile. I define the...
View ArticleMass transfer and mixing in a packed bed of spheres
Hi, I would like to simulate a mixing of 2 components A & B trough a packed bed reactor (D=10cm L=50cm) of spheres (2 mm), and analyze the average composition across the bed in the axial direction....
View ArticleCOMSOL AC-DBD Modelling
Hello everyone I am trying to model a AC-DBD (Alternating Current -Dielectric Barrier Discharge) Plasma Actuator ,using COMSOL. I am trying to implement the model of Suzen and Hwang(attached) ,whereby...
View ArticleHOW TO GIVE AN ACOUSTIC WAVE TO A PIEZOELECTRIC MATERIAL
I WANT TO GIVE AN ACOUSTIC WAVE OR A SOUND WAVE TO A PIEZOELECTRIC MATERIAL TO STUDY THE DIRECT EFFECT OF PIEZOELECTRIC MATERIAL.PLEASE HELP ME OUT.
View Articleit doesn't work depends on thickness of electrolyte
Hi, I am trying to make the modelling to predict potential distribution under the thin electrolyte. My model consists of 2 electrodes covered with thin electrolyte. When the thickness of electrolyte...
View ArticleParameter estimation
Hello, I want to determine one parameter k1, which is used over the entire domain. However, objective function values should be compared only at a boundary. According to the Optimization user manual, I...
View ArticleDisplacement in comb Structure
HI, I am a newbie to Comsol, and i am using 4.3 version and working on a mems gyroscope. i need to find the displacement in the x direction(Drive direction). I am using electromechanics physics and...
View ArticleDisplacement in comb Structure
HI, I am a newbie to Comsol, and i am using 4.3 version and working on a mems gyroscope. i need to find the displacement in the x direction(Drive direction). I am using electromechanics physics and...
View ArticleDisplacement and Force Caalculation in comb Structure
HI, I am a newbie to Comsol, and i am using 4.3 version and working on a mems gyroscope. i need to find the displacement and the force in the x direction(Drive direction). I am using electromechanics...
View ArticleFemtime – mismatch for 2 different tlists
Hi, The system I solve is a coupled system (resistive heating) --> higher temperature --> higher current --> higher temperature and so on. The system I look at has sharp temperature changes in...
View ArticleWhat is different between "stationery" and "study controlled" in Equation...
Hi When I select "study controlled" for the equation form in the mef node of AC/DC physics my model runs and I get the results. But, when i select "stationery" it takes a long time to converge. I am...
View ArticleVORTEX TUBE ANALYSIS
I am new to comsol. I am using ansys fluent. to analysis vortex tube in fluent there is an option called swirl dominant flow under k-epsilon. is there any option in comsol like this -- quiting is not...
View ArticleTime dependant temperature at the boundary
Hello, I am new in COMSOL, so probably this question will be really naive for you, but I need to ask. I want to apply in one of the faces of my model a temperature that is changing with the time , what...
View ArticleLVDT design
HI IVAR, i am currently working in LVDT Design(Linear Variable Differential Transducer) particularly used for displacement measurement.. i have designed the mechanical model.. i have attached the file...
View ArticleElectrostatic Comb Actuation
Hi, I'm working with electrostatic comb structure (3 D) modal, I used electromechanics physics and stationary study.I need to measure the displacement of the mass. I am getting a constant displacement...
View ArticleSCHEME SELECTION
Hello, for my analysis i required to simple scheme with second order equation for momentum. I done my calculation analytically now its the time to validate with a commercial software. help me plz --...
View ArticleProblem with solve
Hello! I stidy the problem of heat transfer. I solve my problem for a long time (30 year). I ask the heat flux on one of the walls in the form of the boundary conditions of the third kind. Each time at...
View ArticleDisplacement Measurement Comb Structure
Hi, I just want to find out the drive displacement now. I am not taking into consideration of the coriolis effect, (which ill be considering at a later point of time) I want to study how much the proof...
View Article