Possible 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 ArticleVertical_flow_Subsurface_Costructed_Wetland
Hi, I am a new user for COMSOL. I want to simulate wastewater in a vertical flow subsurface constructed wetlands, So, I am asking if there any tutorial regarding this subject. I am waiting to hear from...
View ArticleOutlet BC with velocity at boundary
Hi, I am using COMSOL 4.4 and the FSI physics with a Time Dependent Study. I want to define an outlet BC with laminar outflow so I can define the exit length at the outlet which is important for the...
View ArticleWall Shear stress
Hi everyone In several articles I heard about wall shear stress(WSS), but in comsol i don't know if it's possible to calculat. So what's the term used to mesure or calculate WSS in comsol? and if there...
View ArticleEvent based - change between two physics
Hi, How is it possible to define for comsol to calculate the dependent variable for some specific time for one physics and some times for the other physics (defined PDE and fluid flow)? Is it possible...
View ArticleNavier-Stokes Simulation using Coefficient Form PDE
Hi: I need to simulate fluid flow in a triangular duct, but I need to run it on a high reynold number. The problem is that when I run the model using the default "Laminar Flow" physics tab, I need a...
View ArticleCapacitance calculation in COMSOL for series of capacitances
I am building a digital microfluidics model in which a water droplet is sandwiched between the two copper coplanar electrodes. 1) I have built the model by taking size of electrodes as 37.1x 37.1um^2....
View Articledroplet evaporation on a substarte
Hello, I am trying to simulate the simplest case ever! It is a water droplet onto a glass surface. I am using Laminar flow and heat transfer module to do it. I am really new on this and I am not really...
View ArticleDamped Vibrating Cantilever
Hi, My problem is that I have a cantilever that I want to damp by having fluid in a longitudinal channel running the length of the beam. However, since this is difficult to simulate I have been trying...
View ArticleDivide the surface of a cylinder with height of 8mm and radius 80mm into 8...
Hi I'm working on ERT, sensitivity, on COMSOL for multiphase(water and oil) flow I have calculated the total current density of water and i need to calculate the total current density of oil(mix)....
View ArticleImporting solid meshes
Hi, I have a 3D solid mesh that is composed of separable pieces, imagine something like disjoint fingers. I've tried importing this file as STEP and IGES, but the problem is that it only loads one...
View ArticleWall shear stress
Hi every one what's the difference between the wall shear stress and the total stress in comsol and what's the interest of every one. thank you a lot Best regards Sekhane Djalal
View ArticleEvolution of temperature along a fine tube
Hello, I would like to see the evolution of the temperature in a steel tube (about 1 mm diameter). I used the physic "non-isothermal flow" laminar. My boundary conditions are 7bars input and 1 bar...
View ArticleHelp with simulating condensation from a partially filled closed glass vial...
Hi! I am having trouble with a condensation simulation. A closed glass vial at ambient temp is partially filled with 10 degC water. When it is put in a cold room with temp of 5degC, condensation...
View ArticleHow do i find the centre of mass in a circular shape on COMSOL?
Hi, I have a circle of radius 40mm extruded to a height of 4mm and divided into 8 equal parts or domains. 1. How do I retrieve the (centre of mass) for this shape on COMSOL? 2. How do i know the x, y...
View ArticleParticle tracing - particle counting
Hello to everyone, Im new to COMSOL and currently trying to work with particle tracing for fluid flow. The model we are working on is part of vascular network and we are using as physics : structural...
View ArticleMathematical representation of the physics controlled mesh
Hello, I want to know what is the typical mapped logarithmic or algebraic representation that captures the boundary layer in the physics controlled mesh. In other words, what is the logarithmic or...
View Article*Now Available* COMSOL Multiphysics 5.1
Hello COMSOL Community, COMSOL Multiphysics(R) 5.1 was released on Wednesday, April 15. Version 5.1 is the first and only integrated simulation environment that lets you build multiphysics models and...
View ArticleMirror/duplicate data after using a symmetry plane
Hello everyone, I have a question concerning symmetry planes. I want to model a static mixer and a surrounding cooling structure. I want to simulate the flow through the mixer first, and then model the...
View ArticleProblem with increasing the inlet velocity in FSI
Hi everyone, I was looking at Fluid-Structure Interaction model from model library. The length unit in this model is micrometer and I want to change that to meter and increase the inlet velocity but I...
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