Comsol startup

Comsol startup. Switching to Generalised Alpha avoids the problem behaviour. Optionally, COMSOL Server can be run on multiple computers to support more simultaneous users and concurrent applications than a single computer would support. On Windows®, right-click the COMSOL Multiphysics 6. For conventional modeling and simulation tasks To connect to a COMSOL Multiphysics server from the COMSOL Desktop, select File>COMSOL Multiphysics Server>Connect to Server ( ). Go to the Config Services page. However, if you have a model that is too large to be solved in one block and the errors that are introduced by the partitioning are acceptable, you can use LiveLink™ for MATLAB® to integrate a model . To install COMSOL Multiphysics ® and our other products, you must have a trial passcode or a license file. These videos outline our procedure for setting up, building, and computing models, which we refer to as the modeling workflow. . Example: 192. - Click Next until you reach the LiveLink section. In the Target edit field, add the switch above after comsol. Go to the Start/Stop/Reread page and click the Stop Server button. 3b/mli. May 13, 2011, 6:26 p. Defining physics boundary conditions. The COMSOL Access login page on the COMSOL website, where you can log into or create a COMSOL Access account. For example, use Add/Remove Products and Reinstall On the Service/License File tab, select the COMSOL License Manager. In MATLAB, add the path of the COMSOL5. Building the geometry. 1 m and z = 0. When a reaction mechanism is added, the Apr 18, 2014 · So, let’s create the model in COMSOL Desktop. Enter this command at the MATLAB prompt: mphstart. . The COMSOL User Interface sometimes does not work under Wayland after updating from Debian 9 to Debian 10, but seems to work well under Wayland in new installations. Once you have added your license or licenses to COMSOL Access, navigate to Product Download. In the Model Builder window, under Component 1 (comp1) click Reaction Engineering (re). Locate the COMSOL56\license\win64 folder and run lmtools. 0, however the steps are the same for future versions. COMSOL ® Installation Companion. The start-up time and cell temperature distribution are studied accordingly. For a description of these methods, see Knowledge Base 1062: BDF, Generalized Alpha, and Runge-Kutta Methods In the COMSOL Installer, select one of the following options: -. When the CAD access window appears, double-click COMSOL. Let us take a look at how this operator is implemented and then examine how it can be used for various modeling needs. Checking for additional startup script (comsolstartup. This check box adds firewall rules that allow COMSOL server programs to open ports and communicate over the network. Start CADpass client and log in using your CMC Microsystems Username and Password. If you are new to simulation or using COMSOL Multiphysics ®, this article will connect you to a series of self-guided tutorial videos that provide a comprehensive introduction to modeling with the software. In the LiveLink™ for MATLAB® section, in MATLAB® installation folder browse to the desired MATLAB installation root directory. The first approach you can use to solve a time-dependent model with inconsistent initial values is to initialize your transient study with a stationary study. c_C3H6O - Concentration - mol/m3. The terminal does not recognize the command "comsol" nor "comsol matlab". m. Finally click Install. For COMSOL Server to start automatically at boot up, you need to add Bourne shell commands to the appropriate boot scri pt. May 9, 2017 · I had a look at the setup instructions and it says to add the path COMSOL4. In the installation manual, it says to change the matlab installation path in the comsol startup file in the value "mlroot". COMSOL Multiphysics is a finite element analyzer, solver, and simulation software package for various physics and engineering applications, especially coupled phenomena and multiphysics. If the numerator is a temperature, enter it as `9459 [K]`, or else you can "dedimensionalize" the denominator as, for example, `T [1/K]`. study ("std1"). Start COMSOL again. 1>COMSOL Launchers>LMTOOLS. Click on “Run in browser” to start the application You will see that following window opens which has input parameters, description, graphical features COMSOL Multiphysics ®. With the Reaction Engineering interface, chemical equations can be input in order to automatically obtain the material balance equations for the chemical species in the system and the energy balance equations for the system. 0 with Simulink shortcut icon, and select Properties. 2 macOS Apple Silicon Native Support Solution Number: 1307 Versions: All versions. This operator allows you to evaluate quantities at the previous time step when using the default implicit time-stepping algorithm. The modeling workflow consists of the following steps: Setting up the model environment. 1, please see Knowledge Base 1300 System Requirements COMSOL 6. mph file with MATLAB®. exe, the main file to run comsol, the content of the file is as follows, set tmp=D:\Temp start comsol. If you clear this check box, you might get a warning from the Microsoft Firewall when you start a COMSOL server program, or a COMSOL server program might not work as expected. 1 Note that the file extension of the compiled application will vary When COMSOL Server is started for the first time as a service, the command <COMSOL Server Installation Directory>\bin\win64\comsolservice If you choose Manual or Disabled for the COMSOL Server service’s Startup setting, you can enable or start the services from the command line or by using the Manage local services shortcut Add Windows Firewall rules for COMSOL programs. Add or manage your licenses on the Manage Licenses page. COMSOL ACCESS AND TECHNICAL SUPPORT To receive technical support from COMSOL for the COMSOL products, please contact your local COMSOL representative or send your questions to If you are reading the documentation as a PDF file on your computer, Compiling applications requires a license for COMSOL Compiler™. Alternatively, if using a Microsoft Windows workstation the user can access the COMSOL Server Solution. Then, we’ll go to “AC/DC” and select and add Watch this 18-minute archived webinar to learn the basics of using LiveLink™ for MATLAB®, an interfacing product that connects the MATLAB ® software and the COMSOL Multiphysics ® software. So, if you are going to: Preferences>Multicore and cluster computing>Number of processors. The process for starting the license manager is the same for both start-comsol-license-manager and COMSOL Server™. There are a couple of ways that this can be done, as are described below. After you log in, click Manage Licenses to go to the Manage Licenses page. We will go to “Structural Mechanics”, select and add “Thermal Stress”. This is done by entering the following command on the MATLAB command line: model = ModelUtil. Click New COMSOL 6. A UI screenshot showing the Manage Licenses link on the main page of a COMSOL Access account. There, you will see the method used to compute the solution. In this archived webinar, we show you how to access settings and results in your COMSOL Multiphysics ® models by scripting using LiveLink™ for MATLAB®. create('Model'); The model object on the COMSOL Multiphysics server has the tag Model, while the variable model is its link in MATLAB. 1. This video tutorial covers the following sections:0:00 Intro0:25 What is COMSOL Multiphysics?0:36 What sort of problems we can solve with COMSOL/ COMSOL modu In the COMSOL Desktop, on Windows® go to the File menu and select Preferences; on Linux® or macOS, go to the Options menu and select Preferences. Apr 2, 2015 · Double clicking on that a window was created which asked for user name and password and to confirm password. March 19, 2013. My guess I have to set some kind of JAVA path, but I have no idea how. Incompressible and compressible flows. cmd in the folder where we can find comsol. com. To set up the license manager as a service from the FlexNet Control Panel (LMTOOLS): 1. Alternatively, run LMTOOLS from the Windows Start menu, available under COMSOL Multiphysics 5. 6/mli directory. You can save a model that has been set up in the COMSOL Multiphysics ® user interface to an M-file. Use the comsol command to start COMSOL products with detailed startup options. This starts a COMSOL Multiphysics server and the MATLAB prompt, where the LiveLink for Simulink welcome message is displayed. You can also specify a Period of event to model regularly repeating changes in load. In this part we learn how to lunch comsol server and how to establish co May 13, 2011 · Hi in the same model file I believe yes, but in two different data set, that may be accessed as two seqential subnoes to a results - plot node -- Good luck Ivar. We demonstrate loading a model built with COMSOL Multiphysics ® into MATLAB ® as well as modifying it via the command line and scripts in MATLAB ®. Leave this checked while you are using the software. Select the Reactor Type-CSTR, constant volume for a liquid mixture and include the Energy Balance. To compile an application, click the Compiler button () in the Home toolbar’s Main section and specify the output directory, the platforms to compile for, a splash screen, and possibly some additional settings (see below); then click the Compile Application button () or press F8. COMSOL 6. Hope it helps. From the menu, choose Component 1 (comp1)> Reaction Engineering>re. In the Simulink Start Page window, locate the Blank Model section and click Create Model. 168. run (); This second approach is a bit simpler, so let’s use this approach within this blog post. comsol [ <target>] [ <options>] [ <target arguments>] where square brackets indicate optional arguments. In Part 2 of this course on modeling with partial differential equations (PDEs), we will have a closer look at using the Coefficient Form PDE and General Form PDE interfaces to model with general diffusion-type equations, such as Poisson's equation, the Laplace equation, and the heat equation. 0. Probing Your Simulation Results. Perform computational fluid dynamic simulations with the CFD Module, an add-on product to the COMSOL Multiphysics ® software. In COMSOL Multiphysics ® you can do just that by using Probes. COMSOL Multiphysics won't start on my computer, which uses a new Intel Xeon processor. Step 3. 5a and using matlab 2009a on a linux redhat OS. Olivia Van. Creating the mesh. Locate the COMSOL61\license\win64 folder and run lmtools. Copying the code to run a particular node of the model tree. When I go into Licensed and used products inside COMSOL, LiveLink for Matlab is listed under other products. cmd file on your desktop. This affects only the BDF solver. Then in the Connect to Server dialog box, specify the hostname of the server in the Server field. When I try to run "glxgears", it runs fine by the way. Up to 300 users can run up to four apps each concurrently. Specifying material properties. Running the simulation. then you can change that section and choose all the cores that you have in your computer. This will be either BDF, Generalized alpha, or Runge-Kutta. You need the license manager to run the COMSOL Multiphysics ® software using the FNL, CKL, or COMSOL Server™ license types. To build this app, we will use the Application Builder in the COMSOL Multiphysics ® software. Starting the COMSOL Multiphysics LiveLink (TM) for MATLAB (R). The user can access the COMSOL Server via a web browser, by navigating to the IP-address or hostname of the COMSOL Server, followed by the appendix “:XXXX”, where XXXX is the service port used. A streamline is a curve everywhere tangent to an instantaneous vector field. For a transient simulation, imagine if you could simply insert a virtual sensor in a model at a certain location and then monitor the evolution of a field value over time while solving. In the Settings window for Reaction Engineering, locate the Reactor section. You will learn how to work with the COMSOL API; graphics, geometries, and meshes; numerical results; and low-level info in your models. Send Private Message Flag post as spam. by Bjorn Sjodin. Finally, based on the 3D Comsol model optimal start-up methods are proposed for the HTPEM fuel cell. 2 for macOS Intel can not be used under Rosetta on Apple Silicon computers. The combined start-up processes of preheated air heating and ohmic heating by fuel cell reaction are investigated. In the Preferences window select LiveLink Connections. If neither of these solutions work, please get in touch with COMSOL Support, support@comsol. The Model Builder enables you to combine multiple physics in any order for simulations of real-world phenomena. -. The only way I can get COMSOL 44 to work, is to re-install it completely, which is a bit annoying. As the platform for deploying and running applications built by your in-house simulation experts, COMSOL Server™ helps you streamline the R&D The solution to this issue is to manually run the installers for the Microsoft Visual C++ Redistributable Packages found in the ext directory on the COMSOL DVD image. dat so that they all point to the COMSOL 6. Click on “Run in browser” to start the application You will see that following window opens which has input parameters, description, graphical features Starting on Windows ®. If you have both of these installed, you only need to start the license manager from one of the installations. A red checkmark appears next to the entry, as shown in Figure 1. I'm not sure what `T` is, but it might be a temperature, which makes the input to the function dimensionally inconsistent. Add the following command switch to the COMSOL command:-allocstack 4. 6>COMSOL Launchers>LMTOOLS. The COMSOL kernel will give it a good try and let you know if it manages to LiveLink™ for Simulink® makes multiphysics cosimulation possible by using COMSOL Multiphysics ® and any of the add-on products. 3 m) for the two scenarios. You can combine both of their strengths using the LiveLink™ for MATLAB® interfacing product. Jul 13, 2011 · Note that while COMSOL employees may participate in the discussion forum, COMSOL ® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team. The target should look like this: 2 In the Settings window for Global, click Replace Expression in the upper-right corner of the y-Axis Data section. 02ns, for instance, 0 - 10ns, 0 - 20ns, 0 - 30ns, 0 - 40 ns, 0 - 50ns, and 0 - 60ns. The CFD Module provides tools for modeling the cornerstones of fluid flow analyses, including: Internal and external flows. Aug 5, 2010 · I am running comsol 3. You can integrate MATLAB ® code with your COMSOL Multiphysics ® models via LiveLink™ for MATLAB®. CFD Module. Right now, this value is blank. Change the paths to lmgrd. Note that the tutorial installation is performed for version 5. In the COMSOL Desktop, on Windows® go to the File menu and select Preferences; on Linux® or macOS, go to the Options menu and select Preferences. 1 Start COMSOL with MATLAB 2 Start modeling by creating a model object on the COMSOL Multiphysics server. These instructional videos then take you through each step of the Adding a Switch to the Start Command. m) speeds up the cell start-up process. Sep 2, 2013 · Those situations are quite rare, but they can happen. Click Add License and upload your license file or enter your trial passcode to enable the COMSOL installer to be downloaded. 5 ° C. exe. The Application Builder gives you the tools to build your own simulation apps. This M-file then contains COMSOL ® API calls, in MATLAB ® syntax, for running COMSOL COMSOL Server is a multiuser service that can be run continuously on the host computer. This video tutorial explains how to set up and start the license manager. For COMSOL 6. Select Power Options. The COMSOL Server™ product helps you spread the benefits of simulation throughout your organization. • Not a memory issue: Comsol is using under 400 MB, and there are 2+ GB of system memory available if it wanted. You should see a marked improvement in speed. Obtaining the Software To set up the license manager as a service from the FlexNet Control Panel (LMTOOLS): 1. Please note This entry concerns COMSOL 6. Watch this self-guided series of tutorial videos to learn how to use the COMSOL Multiphysics ® software from the comfort of your desk. COMSOL Server™. Create physics-based models and simulation applications with this software platform. If a repeating pulsed load is applied, use two explicit events, one to trigger at the turn-on time, and the other to trigger at the turn-off time. The COMSOL Access main page, where you will land once you have Connecting MATLAB to the COMSOL Multiphysics Server. COMSOL is the developer of COMSOL Multiphysics® software, an interactive environment for modeling and simulating scientific and engineering problems. You will also learn how to use the Application Builder, which allows you to transform a Feb 24, 2022 · I set six different start and end time with the same time step 0. COMSOL Server is a multiuser service that can be run continuously on the host computer. Postprocessing the results. Jun 25, 2015 · COMSOL Multiphysics version 5. Simulate Single-Phase and Multiphase Flow. If the COMSOL Multiphysics Server started listening to a different port than the default one (which is 2036) use the mphstart function as in the command below: mphstart To find out if a fixed timestep is being used, go to the Time-Dependent Solver settings, Time Stepping section. It is typically used in conjunction with a Discrete States feature that is used to modify a boundary condition. In this demonstrative video, you will learn about the COMSOL Multiphysics ® modeling workflow and find out how to use a MATLAB ® function in your simulations set-up in the COMSOL To start a new discussion with a link back to this one, click here. exe, and license. KNOWLEDGE BASE COMSOL crashes on startup after updating to Debian 10; FORUM convergence problem; Based on a 3D COMSOL model of a single HTPEM fuel cell, start-up process is analyzed by comparing start-up time and thermal behaviors inside the fuel cell. The comsol command can be combined with optional targets to achieve various results. To investigate this, do the following: Open the Control Panel. To start COMSOL Multiphysics with MATLAB, double-click the COMSOL with MATLAB icon available on the desktop. 3D streamline plot is analogous to the 2D streamline plot except that there is no height data setting and the starting point selection is different. The software facilitates conventional physics-based user interfaces and coupled systems of partial differential equations ( PDEs ). Select the High performance power plan (or even Ultimate performance if available). Use a Streamline plot in 2D () or 3D () to visualize a vector quantity. Dec 9, 2020 · Go to the Method Editor and paste (Control+V) to see the code: model. In Mac or Linux there is a startup file called /bin/comsol. In other words, you can think of COMSOL Runtime™ as the environment in which various compiled applications are run. 1 installation directory. Figure 1: The COMSOL Selection in CADpass client. If you do not have one, first contact your Mar 3, 2014 · The Fuel Cell with Serpentine Flow Field model is a great example of how you can use COMSOL software to ensure the serpentine design functions properly. This is illustrated by the example called On/Off Control of a Thermal Actuator. May 15, 2024 · COMSOL Runtime™ contains all of the necessary software components that the application needs for geometry creation, meshing, solving, visualization, etc. You can access the online documentation directly at the MATLAB prompt using the Mar 19, 2013 · COMSOL Blog. In the MATLAB Home toolbar, press the Simulink button to start the Simulink environment. I can see the splash screen, but the program doesn't go beyond that. Jul 18, 2010 · Maybe you can try changing the window manager of comsol (settings) to Swing and see if it works? edit: well, I don't know how you can modify the settings in comsol in Windows without starting comsol. 1 includes a Previous Solution operator within time-dependent studies. On the Service/License File page choose Configuration using Services. We can add more code that automates the data extraction. 2. Feb 19, 2019 · Hi, The exponential function `exp` expects a dimensionless input. The model consists of a two-hot-arm thermal actuator made of polysilicon. Mar 10, 2014 · There are a few methods available for using solutions as starting point values in COMSOL Multiphysics®. 3. com Oct 18, 2015 · Oct 19, 2015, 4:17 a. In Windows, the simplest way to do this is to right-click the COMSOL shortcut and select Properties. COMSOL Multiphysics ® is a general-purpose simulation software used in all fields of engineering, manufacturing, and scientific research. After that when it opened MATLAB, it is showing the following java error-. For the CAD Import The COMSOL Product Suite. Aug 4, 2010 · KNOWLEDGE BASE COMSOL crashes on startup after updating to Debian 10; FORUM Meshing-related COMSOL software crashing; BLOG Computing the HRTF of a Scanned Geometry of a Human Head; KNOWLEDGE BASE Running COMSOL® in Parallel on Clusters; BLOG Multiphysics Conferences in Boston and Milan Draw More Than 700 Engineers, Researchers, and Scientists Duration: 2:22. 3 Click Replace Expression in the upper-right corner of the x-Axis Data section. 2. Mar 28, 2014 · Whenever I switch off my computer and then switch it back on, I cannot start up COMSOL44. In the LiveLink™ for MATLAB® you can browse to the new MATLAB starting the manager automatically as a service. You must be a su peruser (root) to edit boot scripts. Run the file called vcredist_vc141_x64. More videos: Learn how to start the license manager The first step in modeling any system is to establish the material balances. MATLAB ® and COMSOL Multiphysics ® are very powerful software. We will start by selecting a 3D space dimension and then, from the Add Physics menu, we’re going to select our three different physics interfaces of interest. This blog post is your guide to building a simple and educational simulation app for designing a two-dimensional reflective metalens consisting of an array of glass nanopillars with varying diameters on a metal substrate. exe If you want, you can create a shortcut for this . For me COMSOL is installed in C:\Program Files\COMSOL\COMSOL52\Multiphysics but I cannot find the mli folder anywhere. The general syntax of the COMSOL command is. Distribute, Manage, and Run Applications Built with COMSOL Multiphysics ®. Find “Startup of a CSTR Part-1”. The Model Manager is a modeling and simulation Step 5: This will open up COMSOL library where you can see many COMSOL files to solve chemical reaction engineering problems. For Floating Network Licenses (FNL), Class Kit Licenses (CKL) and COMSOL Server Licenses (CSL), this usually means one of two things: There is something, most likely a firewall, blocking the computer where you are trying to start COMSOL from accessing the license server on the ports that the license manager is using (by default 1718 and 1719). You need to manually update the MATLAB root directory path. The COMSOL Multiphysics model, using a default mesh with about 430 elements, gives a temperature close to 186. 1. The instructions mentioned here are appropriate for license managers who are either installing only COMSOL Server™ or both COMSOL Server™ and COMSOL Client. The line graph below shows the temperature variation during 380 s at the target location ( r = 0. Set the MATLAB root directory path in the MATLAB® installation folder field, then click Next. Posted: 1 decade ago. This is part 2 of a video series in which I explain how to connect matlab to comsol. Academic Server License (ASL) The academic server license lets you host, manage, and run simulation applications built with the COMSOL Multiphysics ® Application Builder for use by students, faculty, and staff of your academic institution or of any other academic institution, worldwide. Starting with the version of the Flexnet distributed with COMSOL Streamline. Hi, Usually comsol consider to use half of the cores of your system. COMSOL Not Starting on Some of the More Recent Intel Processor Models Solution Number: 1305 Applies to: COMSOL Multiphysics Versions: 6. EDT. Such a power plan can limit the speed of COMSOL. org session. The software brings fully coupled multiphysics and single-physics modeling capabilities, model management, and user-friendly tools for building simulation applications. with Simulink®. Alternatively, run LMTOOLS from the Windows Start menu, available under COMSOL Multiphysics 6. Click Add/Remove Products and Reinstall and proceed to Step 5 (Platform Page) to change or reinstall an existing installation. However, they give me inconsist results at 10ns, see the figure below. Both Fully coupled and Segregated solvers show the same behaivour. Do the following: Download the COMSOL Multiphysics DVD image from the Product Download page; Go to the ext directory. Finally, optimal start-up methods are proposed for the HTPEM fuel cell. 100:2036 or comsolserver:2036. exe Switch from a Wayland session to a X. My hunch is that the matlab interface was Step 5: This will open up COMSOL library where you can see many COMSOL files to solve chemical reaction engineering problems. In many cases, it is possible to convert a geometry from the CAD kernel to the COMSOL kernel (assuming of course that it does not involve an import step, cap faces, or one of the Design Module's special operations). For general product information, contact COMSOL at info@comsol. 1 Installation and proceed to Step 3 (License Page) to make a new installation. For MATLAB ® users, COMSOL Multiphysics ® simulations can easily be integrated into existing code bases. It can be configured to start automatically upon booting. The COMSOL Access main page, where you will land once you have • This happens in stand-alone Comsol, as well as running in client+server mode. This opens the MATLAB desktop together with the COMSOL Multiphysics Server, which is represented by the command window appearing in the background. For Windows users, you can also customize the Quick Access Toolbar and then click the Connect to Server button. The model depicts the cathode air flow and mass transport in three serpentine channels and the corresponding current density in the underlying active layer of a polymer electrolyte fuel cell Sep 21, 2023 · September 21, 2023. The actuator is activated through thermal expansion. To start, we guide you through the COMSOL Multiphysics ® user interface, explaining the purpose and use of each aspect. That is, nonisothermal conditions apply. In 3D, you can also use a Streamline † The COMSOL Multiphysics Programming Reference Manual contains reference documentation that describes the methods in the model object. This article is a streamlined repository of installation information for COMSOL Multiphysics ®, the COMSOL License Manager, COMSOL Server™, and COMSOL Client. Approach 1: Initializing Time-Dependent Studies with Stationary Studies. The COMSOL Access main page, where you will land once you have Integrate with Your Existing MATLAB ® Programs. Download the Installer. Dec 19, 2010 · For example, if we want to save these big files into D:\Temp, we can create a dos batch file comsol_myrun. vx ix th gu sk lo ok fc cb xj