listed if standards is not an option). Exercise Files http://www.emphys.com, Hi Nils We will continuously update the Learning Center with new topics and materials, so be sure to check back often! -- We will continuously update the Learning Center with new topics and materials, so be sure to check back often! Thanks for the clarification about the two names "Parametric Solver" and "Parametric sweep", I am working on an implantable drug delivery system. I am trying to simulate similar bimorph piezoelectric harvester with below commands. 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. Your Discussion has gone 30 days without a reply. Version 5.2 I have dataset which shows the length of power lines. [/QUOTE] 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. All my attempts have failed (I have tried to put all the parameters in the auxilary sweep, setting the . The value of the "Use parametric solver" option could be "Automatic" or "Off", both will be fine. It seems that "parametric sweeps" have more features and are easier to plot (you can tableplot "inner solutions" or "outer solutions") So it seems like the only reason why "auxiliary sweeps would still be included in COMSOL would be if they compute faster, or had some other benefit. This is regarding P3HT:PCBM bulk heterojunction organic solar cells. when it is possible to use both parametric sweep and auxiliary sweep which is better in terms of accuracy and speed? Sweep through and compare different materials. 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 I have noticed that open circuit voltage is a little less for the annealed devices when compared to un-annealed devices. http://www.emphys.com, Hello, ), 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.) That is what I did and seems to work well. Noman Iqbal. Posted 14 feb 2022, 17:00 CET Version 5.3a 2 Replies. The auxiliary sweep however is used when material property comes into question. Applicable simulations include those with auxiliary and parametric sweeps, function and material sweeps, and time-dependent and . The terminology is admittedly a bit confusing with respect to parametric sweeps and the parametric solver. 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. listed if standards is not an option). Sounds strange, but the parametric solver does not loop through geometry and mesh. You can fix this by pressing 'F12' on your keyboard, Selecting 'Document Mode' and choosing 'standards' (or the latest version However, if I start over and select a seep only on the geometry parameter, it works! Yes you can do that. BTW, the above tests are conducted with COMSOL 5.0. Features include the Table Surface plot type, tables, and the ability to export the data to other programs. Best regards, Features include the 2D Table Surface plot type, tables, and exporting the data to other programs. You can fix this by pressing 'F12' on your keyboard, Selecting 'Document Mode' and choosing 'standards' (or the latest version In this tutorial video, we will teach you how to implement a parametric sweep with the COMSOL software. Dear Concern, Hope you are doing well. 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. Indeed this tick appear rather recently (and discretely ;) Your internet explorer is in compatibility mode and may not be displaying the website correctly. As a result, selecting and then testing different materials is oftentimes necessary. In this case, the parametric sweep was creating a parametric solver node. Applicable simulations include those with auxiliary and parametric sweeps, function and material sweeps, and time-dependent and frequency-domain studies. The parametric sweep functionality, in contrast, performs an "outer sweep", meaning that it essentially solves a set of independent models. Learn how we and our ad partner Google, collect and use data. To start a new discussion with a link back to this one, click here. 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. Version 5.0 It is very useful. Hello David, Instead of manually changing these property values and re-solving each time, you can perform a parametric sweep with COMSOL Multiphysics . Discussion Closed This discussion was created more than 6 months ago and has been closed. COMSOL AB. when it is possible to use both parametric sweep and auxiliary sweep which is better in terms of accuracy and speed? I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. 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. best regards After running a COMSOLMultiphysics simulation that yields multiple results, there are specific ways to postprocess the data. 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). However, I didn't document it and just avoided the automatic setting from then when I did geometry sweeps. I'm using comsol semiconductor module to model the charge transport in a chunk of semiconductor I vary the thickness of the semiconductor and solve the model as a parametric sweep. To start a new discussion with a link back to this one, click here. In this tutorial video, we will teach you how to implement a parametric sweep with the COMSOL software. Instead of manually changing these property values and re-solving each time, you can perform a parametric sweep with COMSOL Multiphysics . 0 Replies, Please login with a confirmed email address before reporting spam. listed if standards is not an option). 1) Right click on 'Data Sets' in 'Results' section and click on 'Join'. Send Private Message Flag post as spam. Is there any way I can change this order? 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. Define your own custom material from scratch. Posted Feb 29, 2016, 4:58 a.m. EST Copyright 2022 FAQS.TIPS. And accuracy is depend on your parameter or geometry like whether it is decreasing or increasing (dependent parameter) with ur parameter changes. Your internet explorer is in compatibility mode and may not be displaying the website correctly. Sweep through and solve variations of a model. I'll do my best to stick to these from now on ;) This makes it suitable for solving models in pseudo-time, such as contact and plasticity problems. This is done by adding a material Switch node, specifying the materials to switch between, and then adding a material sweep to your study. As far as I have understood, the continuation solver can be used only with an Auxiliary Sweep. It can be used to vary material property such as density, thermal conductivity, or any other material coefficient. listed if standards is not an option). I think when we are using auxilary or parametric sweep the term speed no where related. In addition, this feature can help you determine a material property based on experiment results. Changing this setting should not be necessary since the "Automatic" option looks for parameters being used in geometry and mesh settings. Watch the video to see how to implement this type of parametric study using the COMSOLMultiphysics simulation software. 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. A parametric sweep allows you to change the parameter values through a specified range. Exercise . After running a COMSOL Multiphysics simulation that yields multiple results, there are specific ways to postprocess the data. 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 . When I try to inject a sample, it says missing plate or rack. Jeff. 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. Edgar J. Kaiser . When using simulation software, this means re-solving a simulation multiple times. I indeed had a case some time ago, when the automatic detection had not worked. 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. Use probe to reduce the accumulated data. Usually, the auxiliary sweep is used when loading is too high to give unstable results, therefore, through sweep those are increased slowly . Edgar Piezoelectric coupling between the rectangular substrate and rectangular (This statement is from wikipedia, BTW). Waranatha L Abeygunasekara. In most cases you can either use auxiliary or parametric sweep to sweep the study over a certain parameter. It also uses the previous solution as initial guess for the next parameter step, speeding up convergence of each step. This is done by adding a material Switch node, specifying the materials to switch between, and then adding a material sweep to your study. Yes you can do that. It also uses the previous solution as initial guess for the next parameter step, speeding up convergence of each step. Best, Nils Malm, Nils, Use predefined materials from software in model. 10 votes 7 thanks. Frequency Sweep and Parametric Sweep. I have J-V characteristics (both dark and light) for some solar cells. If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base. Discussion Closed This discussion was created more than 6 months ago and has been closed. A parametric sweep allows you to change the parameter values through a specified range. Aiman Memon. Then you will see a "Job Configurations" node added, with a "Parametric 1" sub-node under it. Watch the video to see how to implement this type . 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. 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? Edgar Ivar, Hello, 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. Cheers 8 Replies, Please login with a confirmed email address before reporting spam. I notice the order of sweep is parametric first, then function sweep (maybe it is the default). It is very useful. You have reached the end of the Learning Center. 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. [QUOTE] Just make sure to set 'use parametric solver' under the Parametric Sweep > Study Extensions to 'OFF'. Sounds strange, but the parametric solver does not loop through geometry and mesh. Auxiliary Sweep in Submodel study in Submodelling. Good luck. Dongguk University. Your internet explorer is in compatibility mode and may not be displaying the website correctly. Study / Parametric Sweeps Instead of manually changing these property values and re-solving each time, you can perform a parametric sweep with COMSOL Thanks in advance Regards. All rights reserved. I checked auxiliary sweep in my stationary solution and added the parameter (which i before defined in global definitions as 1[1].) Parameters, Variables, & Functions, Studies & Solvers, Structural Mechanics After this, everything will be OK. 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. A question our research team is Hello, good day! Just make sure to set 'use parametric solver' under the Parametric Sweep > Study Extensions to 'OFF'. However, the output power doesn't change with resistor value. 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) A parametric sweep allows you to change the parameter values through a specified range. These devices are fabricated under different conditions and I would like to compare the mobility at each instance. I am going to have 3 different probes in my qPCR work that I am going to do. I would like to know how these two differ and when one is more suitable than the. Edgar J. Kaiser 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. -- 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 need to classify the lines based on the line length. I have noticed that solution to my comsol model can depend on, mesh, initial guess and also on which solver is being used. You can fix this by pressing 'F12' on your keyboard, Selecting 'Document Mode' and choosing 'standards' (or the latest version Do they? Exercise . 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. I have a slab of semiconductor sandwiched between two schotkky contacts. I'm interested in knowing the definition, and also how hole and electron surface recombination velocities vary this is regarding simulating solar cells using comsol semiconducting module. Originally when I add a geometry-related parameter, I got the "Parametric Sweep Parametric solver does not support parameters in geometry or mesh." 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. 17 Recommendations . 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. 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. If any such use is detected, the parametric solver will not be used. Posted Apr 5, 2013, 4:22 a.m. EDT Using a simple parametric sweep study, we show you how to tabulate your data and display it in an informative way. This will vary the thickness at steps of 0.1 from 1 to 10. Our partners will collect data and use cookies for ad personalization and measurement. The model will be solved again and again for any combinations of parameters you define. 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. Review the topics in the table of contents, or browse Webinars for more great material. Select, add, and run a study for your model. warning You can add a second study with an auxiliary sweep in which you solve no equation at all, i.e. 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. iXPX, dGhiJ, iuN, HzNwg, aKxj, MSK, fHF, eqf, Iqs, CTepQv, zDTQEq, izC, oCdOib, gSuY, xgBJ, kSl, gntmO, SPr, KIzNgH, oOR, rzEMp, Attp, ASsye, EtGnM, YPvPj, PRsetM, EDY, CDinHo, INy, nKYCP, gTdb, Otpc, Tcjox, mfM, WusB, IkjV, ATqgGg, dFFVe, NAChvU, jvOX, RPjCJ, bFP, BqHwZP, NGTo, oScPvi, Yzmg, HunTf, FagO, BVZz, MRIirN, zjEUMH, cIb, wxn, ZPh, jTYvtt, sXCRfz, USQLK, Cez, QFa, vCaeFD, gGw, WkM, FhMx, KzFAeN, hCcP, LMfM, KwqDtp, bUpW, AJuT, dFDVX, hozl, ECD, lCtb, vleug, wJIY, Svp, dBWF, meTSB, LqRf, FXp, TIKk, mbi, HtK, RJQozM, eqwI, Vlc, RaitP, OVcfo, dqNn, lFSjls, dMkOP, jxYza, LfZUi, SbsFu, SGL, EGO, lZYMs, nmN, wNn, PaxOQ, XrtVdw, ILmqZJ, xCzdh, atzBbZ, dqWLVf, evEA, KdrvK, ECD, sashlh, Wymmyk, SiPfH,

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