couette flow
hi to all, I am working on analysis of couette flow in 2d. I got the plots for flow between two parallel plates But i am not getting how to solve the couette flow i.e, the following doubts are araised...
View ArticleVolume force in Laminar flow
Hi there, I am doing simulation of chemical surface reaction in a 3-D reaction channel (shown in the first 3D channel profile). The laminar flow is generated by volume force in specific domain (the...
View ArticleHow to define a mixture of two miscible liquids at the inlet?
Hello, I have a question about how to define a mixture of two miscible liquids (for instance water and ethanol) at the inlet. My 2D geometry is as follows: I have two parallel rectangles (representing...
View ArticleHigh mach number turbulent flow in a converging diverging channel
Hi, I am trying to solve for a 2D asymmetric supersonic turbulent flow in a converging-diverging nozzle. We are using high mach number turbulent flow module. The fluid flows through a tube which is...
View ArticleMay I have a look for your models coupled C-H/N-S equations?
Hi,Daniel , I am modelling a three phase flow by coupling C-H/N-S equation,but I don't know how to it. A chance let me found that the same work by you. So I want say if I have the honor to see you...
View ArticleHow can I get a variable expression from another module?
Hi, I am working on a evaporative cooling in porous media model by using chicken patties and evaporative cooling model as a sample. My work consists of 2 module Transport of diluted species and heat...
View ArticleConvective heat transfer coefficient
Hi everyone, I'm a beginner in Comsol and I have a very simple problem I can't find a solution for. Basically my model is in 2D and is very easy: I have an horizontal plate from which is flowing a heat...
View ArticleIsobaric compressibility
Hi all, I am trying to couple free and porous medium flow to heat transfer in porous medium to model ground water flow and heat diffusion/convection in the ground using subsurface flow module I need to...
View ArticleTime dependent Hinge fluid interaction
I am modeling an artificial heart valve that utilizes hinges as seen in the file included. In the human body the valve hinges are passive which means they open and close depending on varying blood...
View ArticleAutoclave with two sets of impeller blades to hollow rotating shaft - Error...
hi I developed a simple autoclave (which has two sets of impeller blades to hollow rotating shaft placed at different positions )in 3D, rotational machinery laminar flow as my physics and time...
View ArticleAutoclave with two sets of impeller blades to hollow rotating shaft - Error...
hi I developed a simple autoclave (which has two sets of impeller blades to hollow rotating shaft placed at different positions )in 3D, rotational machinery laminar flow as my physics and time...
View ArticlePlotting a 3D Mirror Data Set to view Particle Trajectories- ERROR
Hi, I have modelled half a pipe with particle trajectories in it, but I want to view the particle trajectories in the whole pipe. I tried doing so by creating a 3D Mirror Data Set. I created a 3D...
View ArticleHow to simulate the water boiling by Level-Set method
There is a good example simulating water boiling by phase field. I am trying to use the Level-Set method. However, I was frustrated by many times of failure. My problem is how to deal with the...
View ArticleSimulating ice sublimation from vacuum in closed container
Hi. I am attempting to simulate the sublimation behavior/equilibrium point of ice in a closed container. In summary I have modeled the problem as a fluid/heat transfer model which builds up pressure...
View ArticleTransport through diluted species-Time dependent problem
Hello, I am performing a time dependent analysis for transport through diluted species based on the solution I obtain by performing transport through free and porous region in the same geometry....
View ArticleUndefined value found in the equation residual vector
hi. i met some problems during simulating a conjugate heat transfer problem. I tried to finer the mesh but it could not help. The detailed description is as following: Undefined value found. - Detail:...
View Articlehow to create this geometry
please help me to create the geometry of diffuser in 2d. i have attached the image
View ArticleUndefined value found in the equation residual vector
hi,would you please help me about the problem i have met? I post a message on the website but got noting useful about it. The link is as following:cn.comsol.com/community/forums/general/thread/72611/...
View ArticleTemperature at outlet for non-isothermal laminar flow in circular tube
I am examining a non-isothermal laminar flow in circular tube in COMSOL where the heat transfer fluid in the tube is heated as is passes the tube. Since the flow is laminar a velocity profile will...
View ArticleRegarding Surface vorticity plots
Hi, I am trying to solve flow past a sphere in 3D. I am trying to plot surface vorticity over 360 degree. But i could not find any way in comsol . Somebody please help me in plotting it. Thanks in advance
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