I am using COMSOL 4.1 and I am facing a conceptually simple problem with no luck. Hi, i'm running a large parametric sweep which turned out to dramatically slow down during the last few combinations. Review all of the AC/DC Module updates in more detail below. I set the parameter V2 , for instance in a for loop in a Matlab function by " model.param.set('V2',V2); then run the study by "model.sol('sol1').run;" . Hello all! † New Cluster Sweep and Batch Sweep nodes provide tools for starting and stopping cluster jobs and batch jobs for individual parameter combinations, also allowing access to parametric sweep results before completion of full sweep. In this video, we import data from outside of the software into tables and then create and customize graphical results. × Warning Your internet explorer is in compatibility mode and may not be displaying the website correctly. Parametric Sweep Study: For parametric sweep studies where there are multiple inner solutions (for example, a parameter sweep around a time-dependent solution), Inner solutions and Outer solutions are also available, typically corresponding to Time and parameter values, respectively. For a parametric sweep, we can expect what's called "linear scaleup" in HPC lingo. Hi. to compare the results for the different values of the parameter against each other or a benchmark value of the parameter. Browse the threads and share your ideas with the COMSOL community. Using a simple parametric sweep study, we show you how to tabulate your data and display it in an informative way. Features include the 2D Table Surface plot type, tables, and exporting the data to other programs. For users of the Optimization Module, COMSOL Multiphysics ® version 5.4 includes a Density Model feature for topology optimization, the ability to combine a Parametric Sweep study with derivative free optimization, and new models to demonstrate the Density Model feature. by the way, the parametrical sweep is actually at page 107. About the COMSOL Product Suite. Whether you are showing your results in a presentation, on the web, or as a standalone video file, exporting animations will help you get your point across. 3:54. Magnetic gears are the contactless mechanisms for torque-speed conversion using permanent magnets or electromagnets. Hi, i'm running a large parametric sweep which turned out to dramatically slow down during the last few combinations. Read more about these optimization features below. HFIR is a very high flux pressurized light-water-cooled and moderated flux-trap type research reactor. The target of the link above changed since I made the posting above. 2011 г., 12:07 GMT-4 RF & Microwave Engineering, Interfacing, Results & Visualization Version 4.0a, Version 4.1, Version 4.2 0 Replies I have a similar question about exporting data into a file while sweep parameters in COMSOL model through Matlab livelink. I'm running a parametric sweep of my model and in my output for the "Globar variables to evaluate" portion I want to store the velocity of a specific point. Using a parameter you can, for example, animate a sweep of the position of a slice across the geometry in a slice plot using it in the slice coordinates. This video is all about Parametric Sweep in COMSOL Multiphysics. 3:54. The cluster sweep starts multiple COMSOL batch processes, one for each parameter set, that With linear speed-up, using two nodes will be twice as fast compared to a single node, and four nodes four times as fast. I can't figure out how to tell comsol to evaluate the velocity at this point. COMSOL behaves differently depending on how you define a parametric sweep. To find the optimal properties for a product's design, it is sometimes required to test variations of these parameters. You can either wait for the jobs to complete (their status is shown in the External Processes window) or you can detach from the processes, save the model, close COMSOL … When using adaptive mesh refinement, as shown in the screenshot below, the software will compute the solution on an initial mesh and estimate where the error is high. This video uses a parametric sweep (created in a previous video, Performing a Parametric Sweep Study in COMSOL Multiphysics ®) to detail the ways in which tables can be used in simulations that give multiple results. Your external Parametric Sweep node tells COMSOL to loop all around the model, (I believe not rereading Parameters, but all the rest Yes) in this way your parameter sweep can update the geometry, get the mesher to remesh, and then Solve the model. Geometries are defined by sequences of operations, where each operation is able to receive input parameters for easy edits and parametric studies in multiphysics models. donate and download files in full HD here:http://www.soft-hummingbird.com/Tutorial_Comsol_Download_DonateCOMSOL 4.2 Multiphysics. These correspond to experimental durations from almost half-an-hour down to just over one second. A model configured with parametric sweep needs to run under a range of parameters or combinations of parameters, and each set of parameters can be calculated independently. Browse the threads and share your ideas with the COMSOL community. This video uses a parametric sweep (created in a previous video, Performing a Parametric Sweep Study in COMSOL Multiphysics ®) to detail the ways in which tables can be used in simulations that give multiple results. commandline as in the installation and operationsguide. Comsol models configured with parametric sweep can also benefit from parallel computing in different ways. This feature allows you to control how many levels of After running a COMSOL Multiphysics simulation that yields multiple results, there are specific ways to postprocess the data. 2016 г., 01:58 GMT-8 Parameters, Variables, & Functions, Studies & Solvers, Structural Mechanics & Thermal Stresses Version 5.2 … . When using adaptive mesh refinement, as shown in the screenshot below, the software will compute the solution on an initial mesh and estimate where the error is high. Another option for controlling a Parametric Sweep from the command line is to use a model method for reading the desired parameters from an input file. In the following example, the model method reads the input file and extracts the parameter names, the parameter values, and the parameter units. Parcourez les fils de discussion et partagez vos idées avec la communauté COMSOL. Irene Elliot . Features include the 2D Table Surface plot type, tables, and exporting the data to other programs. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. This video is all about Parametric Sweep in COMSOL Multiphysics. I am simulating Heat Transfer in Solid with Surface-to-Surface Radiation. The parametric sweep is discussed starting on page 96 in the 4.3b version of the booklet, but at page 107 in the version 4.4 version of the booklet. I set the parameter V2 , for instance in a for loop in a Matlab function by " model.param.set('V2',V2); then run the study by "model.sol('sol1').run;" . For users of the AC/DC Module, COMSOL Multiphysics ® version 5.3 brings a new Electrostatics, Boundary Elements physics interface, a new Stationary Source Sweep study step, and several new tutorial models. Combining parametric and auxiliary sweep. Posted 29 февр. If you. Parametric sweep Posted 22.07.2011, 01:25 GMT-7 Parameters, Variables, & Functions, Studies & Solvers Version 4.2 1 Reply Norbert Rüther COMSOL behaves differently depending on how you define a parametric sweep. the way COMSOl is set up is to get, in average to THE solution, in the best way, for that it takes into considerations many issues (I expect only "support" could give a full list). Parametric Sweep. So, in a nutshell, I … For a parametric sweep, we can expect what's called "linear scaleup" in HPC lingo. Combining parametric and auxiliary sweep. 3:54. Modeling Magnetic Gears in COMSOL Multiphysics. Actually, I can't seem to get it to store any of the velocity values. We also analyze a polarized circular port for power transmission with respect to port orientation, and then extend the … We explain how to set up a circular waveguide port and review the analytical solution that defines the port mode field. The Parametric Sweep feature in COMSOL Multiphysics® is used to run a parametric study with several parameter cases in a single instance of COMSOL Multiphysics®. The parameter cases are typically handled one after the other and all compute resources (processes and cores) assigned to the single COMSOL Multiphysics® instance are used. The meaning of linear speed-up is the following: we take our model and run it with one, two, and four nodes and compare the compute times. The Parametric Sweep feature in COMSOL Multiphysics® is used to run a parametric study with several parameter cases in a single instance of COMSOL Multiphysics®. Using a simple parametric sweep study, we show you how to tabulate your data and display it in an informative way. The meaning of linear speed-up is the following: we take our model and run it with one, two, and four nodes and compare the compute times. 3:54. After running a COMSOL Multiphysics simulation that yields multiple results, there are specific ways to postprocess the data. Thanks, that helps! The parameterfile must contain the parameter values in Columns. Features include the 2D Table Surface plot type, tables, and exporting the data to other programs. Showing visually engaging animations can be extremely valuable when conveying the results of your COMSOL Multiphysics ® model. During the simulations I want to vary the angles of some conical heat shields. The geometry will then be re-meshed with finer elements in these regions and the model re-solved on this new mesh. The target of the link above changed since I made the posting above. Matlab, parametric sweep and plotting. In this tutorial video, we will teach you how to implement a parametric sweep with the COMSOL ® software. The Port boundary condition in the RF Module, an add-on to the COMSOL Multiphysics® software, can be used to launch and absorb electromagnetic energy. Hi. Your external Parametric Sweep node tells COMSOL to loop all around the model, (I believe not rereading Parameters, but all the rest Yes) in this way your parameter sweep can update the geometry, get the mesher to remesh, and then Solve the model. This video uses a parametric sweep (created in a previous video, Performing a Parametric Sweep Study in COMSOL Multiphysics ®) to detail the ways in which tables can be used in simulations that give multiple results. When I solve the model, the solver generates a solution for all the 4 parameters, but the solution is exactly the same (corresponding to the default value of nodesIn). comsol batch -input -paramfile -pname. by Nirmal Paudel. … After running a COMSOL Multiphysics simulation that yields multiple results, there are specific ways to postprocess the data. Using a simple parametric sweep study, we show you how to tabulate your data and display it in an informative way. Features include the 2D Table Surface plot type, tables, and exporting the data to other programs.

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