Pipe Heating Control HELP!!!
Hey everyone, Attached is a model I have of air being heating as it passes throug a pipe. Right now the Q (heat source term) was calculated to raise the temperature of the pipe from the inlet temp of...
View ArticleSimulatneous temperature distribution...!
Dear Comsol Users, I am willing to come over to you again, this time with some questions I would like to be enlighted. I've built a 3D heat exchanger (coil) inside a material (cylinder) and with...
View ArticleHow to plot required results??
Dear sir, I wish to create an imaginary plane in required location of my model and plot the results like Maximum, Average and Minimum temperatures at that particular plane. How can I do that?
View ArticleProblems Converting .mph to .m
Hi all, I am working within the fluid-structure interaction module in COMSOL. I would like to vary one of my geometric parameters to optimize a design, and as you all know, COMSOL with MATLAB is the...
View ArticleVolume Integration and Surface Integration
What is the use of volume integration and surface integration for the parameters like temperature, pressure and velocity??
View ArticleEvaluation License
I wish to try on "Pipe Flow Module" and for that I want an initial evaluation license. Can anyone help me out how to get it? The main problem is that I should try hands on that module and than ask my...
View ArticleRunning the simulation for the required time span in more than one times (loops)
Dear sir, My requirement is "Running the simulation for the required time span in more than one times (loops)". I actually do not know the initial values of temperatures of the room that I am going to...
View ArticleCompressible and transient flow problem
Hi, I am trying to model a tank full of air that empties with time through a thin channel (It is almost a nozzle). I used the laminar-transient formulation. I chose from the library the properties of...
View ArticleHow to set initial velocity in level-set method two phase flow for one phase
Hi guys, I am trying to set the initial velocity for a droplet as fluid 1, how can I set an initial velocity for the bulk of fluid (for example the the continuous phase or the drop) in level set...
View ArticleRunning the simulation for the required time span in more than one times (loops)
Dear sir, My requirement is "Running the simulation for the required time span in more than one times (loops)". I actually do not know the initial values of temperatures of the room that I am going to...
View ArticleMarangoni Stirring / Phase Change: Weak Contribution Settings
Hi I have a problem with a weak contribution in a laser surface melting model: My model takes into account solid-liquid phase change using an enthalpy-porosity technique and liquid phase volume forces...
View ArticlePipe Heating Control HELP!!!
Hey everyone, Attached is a model I have of air being heating as it passes throug a pipe. Right now the Q (heat source term) was calculated to raise the temperature of the pipe from the inlet temp of...
View ArticleMovement of air due to thermal expansion
Hi everybody! I'm trying to simulate the movement of the air in 2D and I only get errors. I use two physics: laminar flow with heat transfer. I've created a square full of air and I put easy boundary...
View ArticleError-Automatic remeshing
Hi, I encountered a problem about "Automatic remeshing" with "deformed geomerty" and Time-Dependent Solver When I ran the program, Comsol always displayed a Error: Unsupported operation on this type of...
View Articlehow to enter a Channel thickness
Hi everybody, how to enter the Channel thickness? I use the (laminar flow -> mass flow -> mass flow rate -> normal mass flow rate), but get an error! I read a comsol documentation and I think...
View ArticleError in Jacobian
Can I know what the error means??"Failed to find consistent initial values. Segregated group 1 Failed to evaluate operator Jacobian. Operator: nif, Geometry: 1, Boundary: 12 13 14 15 17 18 19 20 24 25...
View ArticleHow to Improve Convergence in Natural Convection
I am wondering how I can improve convergence in my natural convection model. It is a simple model; an isothermal aluminum plate in water. The model starts out fine but as the run continues (transient...
View ArticleComsol doesn't keep initial values
Hi Now, I work on a Comsol model describing a spouted bed apparatus (spouted bed is a kind of fluidized bed, when the apparatus has a conical bottom). I use Comsol 4.3 with Euler-Euler model, laminar...
View ArticlePipe Flow Module
Can anybody let me know how to use pipe flow module in COMSOL 4.3a starting from basics with an example??
View ArticleSimulatneous temperature distribution...!
Dear Comsol Users, I am willing to come over to you again, this time with some questions I would like to be enlighted. I've built a 3D heat exchanger (coil) inside a material (cylinder) and with...
View Article