General Projection
Hi I am working on a similar problem, I downloaded your supplied mph file, and rerun it. I basically plotted the bulk temperature which you had found, in addition I chose different z planes in the...
View ArticleDrag Force
Hello, I'm new to COMSOL and I've been trying to estimate the drag force on a model I've built in Solidworks. Does anyone know of how to calculate hydrodynamic forces on the model? I have the model...
View ArticleError in modeling a fluid flow and heat transfer in a 3D box
Hello COMSOL Users and Sir Amir Fadil and CFD Experts I am trying to simulate a 3D NITF Problem by heating up the air inside a box and observe the thermal transfer and fluid flow. The material...
View ArticleError in modeling a fluid flow and heat transfer in a 3D box
Hello Sir Amir Fadil I am trying to simulate a 3D NITF Problem by heating up the air inside a box and observe the thermal transfer and fluid flow. My intention of doing this hypothetical problem is to...
View ArticleMass in not conserved even in conservative form, multiphase flow of water...
Hello everybody, I have previously posted on a problem I was trying to simulate about multiphase flows (Multiphase Flow LS - Air Bubble in Water Cylinder - Conservative forms fails) and I have tried...
View ArticleMoving Mesh ALE - Applied to unconfined groundwater flow with unknown water...
Hi, I am trying to set up a model that was presented in the paper presented at the 2012 Conference in Milan: Simulation of Pumping Induced Groundwater Flow in Unconfined Aquifer Using Arbitrary...
View Articlephysical adsorption-which COMSOL module
Hi there, I am now working on a model about the absorption of solute by gold thin layer in a flowing cell. The absorption of solute by gold thin layer is physical adsorption. I want to know which...
View ArticleConcentrated Chemical Species
Hello All, I am in trouble defining the constraint for the dependent variables (mass fractions) in Concentrated Chemical Species physics. I have the mass fraction of Species A to E and one inert (total...
View ArticleError using analytic function of density for air
Dear Dr. Nagi Elabbasi, Greetings and May God bless you. I humbly would like to seek for your expert comment on the study that I am doing and maybe ask for some insights on where did i made mistakes in...
View Articlewhat does the "exclude algebraic" error estimation option do?
I'm working on a time dependent convection-diffusion simulation. The Peclet number is 10^3 to 10^4. The maximum Reynolds number is ~100. The solution tends to diverge at a point where the input...
View ArticlePossible to export the streamline coordinates?
Hi, I am only using the laminar flow conditions, I have plotted the streamline after the simulation, is there anyway to get the streamline coordinate from the simulation? I like to export it if it is...
View Articlerigid particle carried by a channel flow
Hi I have to simulate the displacement and rotation of a rigid prticule in a fluid flow and I am not a professional on comsol. So, is there anyone who could help me? or if you have any examples of this...
View ArticleLarge Eddy Simulation
hello I want to use Large Eddy Simulation on comsol but I can't found it. Can you help how to do this. thanks a lot
View ArticleInitial negative concentrations
HI All, I am trying to simulate a A+B-->C chemical reaction. I dont know why my reactants (A and B) concentration is going negative. How do I fix this? I have attached my model as well as pic of the...
View ArticleFluid flow with a moving solid object/hole
Hello, I would like to model the airflow in a room occupied with people, and to allow the people (cylinders) to move around in the room. Is this possible in COMSOL? For a silly example in 2D: I have a...
View Articlehow to assign conductivity to fluid flow in a microchannel preconcentration...
I am modeling a solution phase preconcentration in microchannel. My system has two inlets and one outlet. From inlet1, buffer (10mM) containing a negatively charged dye is supplied and from inlet2 same...
View Articlewater hammer
hello to everyone well I'm a student and hydraulic master2 I presonte memory of my study is to fain ^ ^ analysis of a battering ram in a pipe under COMSOL aep ^ 10 next joure. I have download COMSOL...
View Articleproblem hammer water
hello to everyone well I'm a student and hydraulic master2 I presonte memory of my study is to fain ^ ^ analysis of a battering ram in a pipe under COMSOL aep ^ 10 next joure. I have download COMSOL...
View ArticleGeneral Projection
Hi I am working on a similar problem, I downloaded your supplied mph file, and rerun it. I basically plotted the bulk temperature which you had found, in addition I chose different z planes in the...
View ArticleDrag Force
Hello, I'm new to COMSOL and I've been trying to estimate the drag force on a model I've built in Solidworks. Does anyone know of how to calculate hydrodynamic forces on the model? I have the model...
View Article