Posted Feb 29, 2016, 4:58 a.m. EST Usually, the auxiliary sweep is used when loading is too high to give unstable results, therefore, through sweep those are increased slowly . We will continuously update the Learning Center with new topics and materials, so be sure to check back often! Instead of manually changing these property values and re-solving each time, you can perform a parametric sweep with COMSOL Multiphysics . You have reached the end of the Learning Center. The parametric solver performs an "inner sweep", which is optimized for performance in the sense that it tries to avoid reassembling and refactorizing the Jacobian or reassembling other constant vectors. This is done by adding a material Switch node, specifying the materials to switch between, and then adding a material sweep to your study. Therefore, I would like to know if it possible to combine a Parametric sweep (concerning the geometric parameters) with an auxiliary one (containing the displacement only), or if there is any other way to efficiently tackle this problem. listed if standards is not an option). . COMSOL AB. Results of single-case research designs (i.e., n-of-1 trials) are often evaluated by visually inspecting the time-series graph and computing quantitative indices. [/QUOTE] Ant this time, what is created from the parametric sweep is a "Parametric 2" node just under and at the same level than the Solver 1. Review the topics in the table of contents, or browse Webinars for more great material. The auxiliary sweep is suitable to use if you are not having any geometry change, parametric sweep is suitable it you are to change a thickness, length, diameter etc. Your internet explorer is in compatibility mode and may not be displaying the website correctly. I am guessing: the sweeps over the geometry and mesh need to go on the parametric sweep; the ones over other parameters (inputs, change on boundary conditions) on the parametric solver. Sweep through and compare different materials. Your internet explorer is in compatibility mode and may not be displaying the website correctly. The parametric solver performs an "inner sweep", which is optimized for performance in the sense that it tries to avoid reassembling and refactorizing the Jacobian or reassembling other constant vectors. The auxiliary sweep is suitable to use if you are not having any geometry change, parametric sweep is suitable it you are to change a thickness, length, diameter etc. To start a new discussion with a link back to this one, click here. Instead of manually changing these property values and re-solving each time, you can perform a parametric sweep with COMSOL Multiphysics . If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. When I try to inject a sample, it says missing plate or rack. I think when we are using auxilary or parametric sweep the term speed no where related. I indeed had a case some time ago, when the automatic detection had not worked. I need to classify the lines based on the line length. You can add a second study with an auxiliary sweep in which you solve no equation at all, i.e. Parameters, Variables, & Functions, Studies & Solvers, Structural Mechanics If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base. Instead of having to manually change the materials specified in your model and re-solve your simulation each time, you can automate this process in the COMSOLMultiphysics software by performing a material sweep. Therefore, I would like to know if it possible to combine a Parametric sweep (concerning the geometric parameters) with an auxiliary one (containing the displacement only), or if there is any other way to efficiently tackle this problem. When using simulation software, this means re-solving a simulation multiple times. But when I do a parametric sweep on this parameter the solver re-does the physics each time (not the mesh thankfully), even though the parameter only effects the variables in the model, and I have parametric solver set to automatic already. 1) Right click on 'Data Sets' in 'Results' section and click on 'Join'. Dongguk University. When I tried to add a geometry parameter to a sweep already containing other parameters, I obtained the same problem than you (even turning the study extensions off). Cheers A Material Sweep study solves your model with materials that you specify and provides you with comparative results of how those materials affect your model. This video uses a parametric sweep (created in a previous video, Performing a Parametric Sweep Study in COMSOLMultiphysics) to detail the ways in which tables can be used in simulations that give multiple results. http://www.emphys.com, Hi Nils Define your own custom material from scratch. Sounds strange, but the parametric solver does not loop through geometry and mesh. Any ideas? Use predefined materials from software in model. These devices are fabricated under different conditions and I would like to compare the mobility at each instance. You can fix this by pressing 'F12' on your keyboard, Selecting 'Document Mode' and choosing 'standards' (or the latest version For example, if you want to monitor stress on a film as thickness increases, instead of changing the thickness every time for each simulation, use a parametric sweep i.e range(1,0.1,10). However, if I start over and select a seep only on the geometry parameter, it works! when it is possible to use both parametric sweep and auxiliary sweep which is better in terms of accuracy and speed? Indeed this tick appear rather recently (and discretely ;) regards, A Material Sweep study solves your model with materials that you specify and provides you with comparative results of how those materials affect your model. Sounds strange, but the parametric solver does not loop through geometry and mesh. Discussion Closed This discussion was created more than 6 months ago and has been closed. Please login with a confirmed email address before reporting spam Hello All, I am trying to run a parametric sweep under a frequency sweep study. A question our research team is Hello, good day! All my attempts have failed (I have tried to put all the parameters in the auxilary sweep, setting the . Sweep through and solve variations of a model. Visualize the results from a parametric sweep. Applicable simulations include those with auxiliary and parametric sweeps, function and material sweeps, and time-dependent and . Posted Apr 5, 2013, 4:22 a.m. EDT If any such use is detected, the parametric solver will not be used. Watch the video to see how to implement this type . Exercise Files I have a slab of semiconductor sandwiched between two schotkky contacts. Good luck. 2)When "joining", or comparing, solutions, you will be asked to choose . 17 Recommendations . Your internet explorer is in compatibility mode and may not be displaying the website correctly. I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. I'm running COMSOL simulations in a 64GB RAM workstation. Our partners will collect data and use cookies for ad personalization and measurement. Changing this setting should not be necessary since the "Automatic" option looks for parameters being used in geometry and mesh settings. Discussion Closed This discussion was created more than 6 months ago and has been closed. Instead of manually changing these property values and re-solving each time, you can perform a parametric sweep with COMSOL Multiphysics . However, the output power doesn't change with resistor value. Frequency Sweep and Parametric Sweep. The auxiliary sweep is suitable to use if you are not having any geometry change, parametric sweep is suitable it you are to change a thickness, length, diameter etc. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 It also uses the previous solution as initial guess for the next parameter step, speeding up convergence of each step. The terminology is admittedly a bit confusing with respect to parametric sweeps and the parametric solver. Use probe to reduce the accumulated data. I checked auxiliary sweep in my stationary solution and added the parameter (which i before defined in global definitions as 1[1].) when it is possible to use both parametric sweep and auxiliary sweep which is better in terms of accuracy and speed? Then you will see a "Job Configurations" node added, with a "Parametric 1" sub-node under it. Applicable simulations include those with auxiliary and parametric sweeps, function and material sweeps, and time-dependent and frequency-domain studies. Hi, im trying to make a projection in a 3d comsol model. Copyright 2022 FAQS.TIPS. Please help to find the reason. So far I have been using the default settings. I would like to know how these two differ and when one is more suitable than the. I have noticed that solution to my comsol model can depend on, mesh, initial guess and also on which solver is being used. Sankha Mukherjee . Send Private Message Flag post as spam. I am going to have 3 different probes in my qPCR work that I am going to do. It may also be that it was still the 4.2 or 4.1 version, not sure here. COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH), www.comsol.com/blogs/maximum-evaluations-on-parallel-sections/, Running parametric sweeps, batch sweeps, and cluster sweeps from the command line, How to Use the Cluster Sweep Node in COMSOL Multiphysics. Thanks for the clarification about the two names "Parametric Solver" and "Parametric sweep", It is very useful. I used release rate ks=1e-6, 5e-6 and 25e-6 in parametric sweep, but all the time I get only one plot even though I select all . http://www.emphys.com, Hello, Version 5.2 Deciding which materials will perform best, subject to your design and performance requirements, is an important part of product development. Hello David, Auxiliary Sweep in Submodel study in Submodelling. I have dataset which shows the length of power lines. Posted 13 aot 2012, 00:06 UTC+2 Version 5.2, Version 5.2a 2 Replies . And accuracy is depend on your parameter or geometry like whether it is decreasing or increasing (dependent parameter) with ur parameter changes. ), About the parametric sweep, after some tests, I found that this "parametric sweep" can be applied to any parameters, no matter geometry/mesh-related or not (input, source, etc.) Thank you all for sharing useful information. Send Private Message Flag post as spam. Study / Parametric Sweeps Instead of manually changing these property values and re-solving each time, you can perform a parametric sweep with COMSOL That is what I did and seems to work well. Features include the Table Surface plot type, tables, and the ability to export the data to other programs. I would like to know how these two differ and when one is more suitable than the other, and also about the performance (which is faster) when you can use both. Using a simple parametric sweep study, we show you how to tabulate your data and display it in an informative way. A parametric sweep allows you to change the parameter values through a specified range. Jeff. BITS Pilani, K K Birla Goa. After this, everything will be OK. best regards In most cases you can either use auxiliary or parametric sweep to sweep the study over a certain parameter. [QUOTE] This is regarding P3HT:PCBM bulk heterojunction organic solar cells. It is very useful. Yes you can do that. Cheers Having fun COMSOLing In most cases you can either use auxiliary or parametric sweep to sweep the study over a certain parameter. -- In addition, this feature can help you determine a material property based on experiment results. When I make changes to this parameter, COMSOL is able to apply the change to these variables when I press the update button without re-solving the physics. After full wave simulation, i am not getting desired results i.e Radiation pattern More Waranatha L Abeygunasekara's questions. It also uses the previous solution as initial guess for the next parameter step, speeding up convergence of each step. Piezoelectric coupling between the rectangular substrate and rectangular (This statement is from wikipedia, BTW). Best regards, However recently I have noticed that when I have a much finer mesh, computation time is .This is regarding the numerical solving of the drift diffusion equations. Review the topics in the table of contents, or browse Webinars for more great material. Your internet explorer is in compatibility mode and may not be displaying the website correctly. Suppose I have a parameter that I know will change neither the mesh nor the physics (magnetic fields no current and electrostatics), but only the definition of some variables in the model. Parametric Sweep. BTW, the above tests are conducted with COMSOL 5.0. I am trying to simulate similar bimorph piezoelectric harvester with below commands. You have reached the end of the Learning Center. Watch the video to see how to implement this type of parametric study using the COMSOLMultiphysics simulation software. Thanks in advance Regards. After running a COMSOL Multiphysics simulation that yields multiple results, there are specific ways to postprocess the data. Ivar, Hello, Waranatha L Abeygunasekara. I even get How to do Piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch? Do they? Abhilash Kumar Tilak. -- Originally when I add a geometry-related parameter, I got the "Parametric Sweep Parametric solver does not support parameters in geometry or mesh." After running a COMSOLMultiphysics simulation that yields multiple results, there are specific ways to postprocess the data. Edgar J. Kaiser When I make changes to this parameter, COMSOL is able to apply the change to these variables when I press the update button without re-solving the physics. the technique explained here: http://www.comsol.com/blogs/maximum-evaluations-on-parallel-sections/ . Posted 14 feb 2022, 17:00 CET Version 5.3a 2 Replies. If you find a case where this automatic detection does not work, please report it to COMSOL support. Select, add, and run a study for your model. I changed the needle and calibrated its position but I still get the same problem. listed if standards is not an option). 8 Replies, Please login with a confirmed email address before reporting spam. Yes you can do that. The parametric sweep functionality, in contrast, performs an "outer sweep", meaning that it essentially solves a set of independent models. You can fix this by pressing 'F12' on your keyboard, Selecting 'Document Mode' and choosing 'standards' (or the latest version I would really like to be able to plot quantities against this parameter and have access to a drop-down menu in the results section like I would if I did a parametric sweep study. The auxiliary sweep however is used when material property comes into question. [/QUOTE] A parametric sweep allows you to change the parameter values through a specified range. I don't know if this can be generalized, but I have noticed this in What is given by the term 'surface recombination velocity" in terms of a contact? Parameters, Variables, & Functions, Studies & Solvers, Structural Mechanics, Error: Failed to compute elastoplastic strain variables, Running parametric sweeps, batch sweeps, and cluster sweeps from the command line, How to Add Stop Conditions to Solvers in COMSOL Multiphysics. 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. Switch between mold materials in results. I have noticed that open circuit voltage is a little less for the annealed devices when compared to un-annealed devices. listed if standards is not an option). But on the other hand, this makes it possible to change geometry and mesh between steps, as well as distribute steps, e.g., over nodes in a cluster. Edgar Version 5.0 I notice the order of sweep is parametric first, then function sweep (maybe it is the default). Aiman Memon. Just make sure to set 'use parametric solver' under the Parametric Sweep > Study Extensions to 'OFF'. [QUOTE] You can fix this by pressing 'F12' on your keyboard, Selecting 'Document Mode' and choosing 'standards' (or the latest version 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. I chose Specified combinations, gave a range of 4 steps and chose run continuation for last parameter (but it is the same for no parameter and then reuse solution yes) 10 votes 7 thanks. All rights reserved. Edgar J. Kaiser This will vary the thickness at steps of 0.1 from 1 to 10. The model will be solved again and again for any combinations of parameters you define. Features include the 2D Table Surface plot type, tables, and exporting the data to other programs. Exercise . lvaro, About the parametric sweep, after some tests, I found that this "parametric sweep" can be applied to any parameters, no matter geometry/mesh-related or not (input, source, etc. Your Discussion has gone 30 days without a reply. I'll do my best to stick to these from now on ;) As a result, selecting and then testing different materials is oftentimes necessary. This makes it suitable for solving models in pseudo-time, such as contact and plasticity problems. 0 Replies, Please login with a confirmed email address before reporting spam. Exercise . In this tutorial video, we will teach you how to implement a parametric sweep with the COMSOL software. Just make sure to set 'use parametric solver' under the Parametric Sweep > Study Extensions to 'OFF'. Use the same materials for multiple components. I want to have function sweep first, then parametric sweep (I notice there might be some convergence issue on the order as I am using reuse solution from previous step). Is there any way I can change this order? Parametric sweep is used to perform a sweep on (change) geometric properties such as thickness, length etc. This is only possible as long as the degrees of freedom stay the same; so it cannot be used when the geometry or mesh is modified. I am working on an implantable drug delivery system. Suppose I have a parameter that I know will change neither the mesh nor the physics (magnetic fields no current and electrostatics), but only the definition of some variables in the model. The parametric solver is also a "continuation solver", meaning that it can control the parameter steps taken in a way similar to a transient solver with automatic time step control. 28th Sep, 2020. You can fix this by pressing 'F12' on your keyboard, Selecting 'Document Mode' and choosing 'standards' (or the latest version Edgar Noman Iqbal. This is done by adding a material Switch node, specifying the materials to switch between, and then adding a material sweep to your study. A parametric sweep allows you to change the parameter values through a specified range. It can be used to vary material property such as density, thermal conductivity, or any other material coefficient.
Custom Filter Pipe In Angular 8 Stackblitz, Kendo Grid Page Size Dropdown, Skyrim The Gray Cowl Of Nocturnal Mod, Kendo-grid Group By Column Angular, Went Fifty-fifty World's Biggest Crossword, A Piece Of Furniture That Might Be Handmade, Spider Tie Concrete House Cost, Fire Alarm Testing Requirements, Iwaki Fc Giravanz Kitakyushu, How To Remove Captcha On Chrome,
