comsol parametric sweep vs auxiliary sweep

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. Discussion Closed This discussion was created more than 6 months ago and has been closed. Learn how we and our ad partner Google, collect and use data. I need to classify the lines based on the line length. Piezoelectric coupling between the rectangular substrate and rectangular (This statement is from wikipedia, BTW). Define your own custom material from scratch. I think when we are using auxilary or parametric sweep the term speed no where related. All my attempts have failed (I have tried to put all the parameters in the auxilary sweep, setting the . I am using a 2707 waters HPLC device. Auxiliary Sweep in Submodel study in Submodelling. I have a slab of semiconductor sandwiched between two schotkky contacts. This will vary the thickness at steps of 0.1 from 1 to 10. Any ideas? Cheers I changed the needle and calibrated its position but I still get the same problem. You can fix this by pressing 'F12' on your keyboard, Selecting 'Document Mode' and choosing 'standards' (or the latest version It also uses the previous solution as initial guess for the next parameter step, speeding up convergence of each step. Copyright 2022 FAQS.TIPS. If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base. Jeff. -- 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. Changing this setting should not be necessary since the "Automatic" option looks for parameters being used in geometry and mesh settings. This is done by adding a material Switch node, specifying the materials to switch between, and then adding a material sweep to your study. Nils Malm, Nils, This is done by adding a material Switch node, specifying the materials to switch between, and then adding a material sweep to your study. I have noticed that open circuit voltage is a little less for the annealed devices when compared to un-annealed devices. You can fix this by pressing 'F12' on your keyboard, Selecting 'Document Mode' and choosing 'standards' (or the latest version Use predefined materials from software in model. Then you will see a "Job Configurations" node added, with a "Parametric 1" sub-node under it. 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? If you find a case where this automatic detection does not work, please report it to COMSOL support. That is what I did and seems to work well. Noman Iqbal. I'll do my best to stick to these from now on ;) I checked auxiliary sweep in my stationary solution and added the parameter (which i before defined in global definitions as 1[1].) Edgar The model will be solved again and again for any combinations of parameters you define. After running a COMSOLMultiphysics simulation that yields multiple results, there are specific ways to postprocess the data. 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. In most cases you can either use auxiliary or parametric sweep to sweep the study over a certain parameter. 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. 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. A question our research team is Hello, good day! After running a COMSOL Multiphysics simulation that yields multiple results, there are specific ways to postprocess the data. The parametric sweep functionality, in contrast, performs an "outer sweep", meaning that it essentially solves a set of independent models. To start a new discussion with a link back to this one, click here. 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. The auxiliary sweep however is used when material property comes into question. Sweep through and solve variations of a model. I'm running COMSOL simulations in a 64GB RAM workstation. It is very useful. So far I have been using the default settings. 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. I would like to know how these two differ and when one is more suitable than the. 0 Replies, Please login with a confirmed email address before reporting spam. As a result, selecting and then testing different materials is oftentimes necessary. Deciding which materials will perform best, subject to your design and performance requirements, is an important part of product development. Exercise Files 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. If any such use is detected, the parametric solver will not be used. 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. 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. 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. Send Private Message Flag post as spam. In this case, the parametric sweep was creating a parametric solver node. I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. Do they? 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 warning Use functions to define material properties. Select, add, and run a study for your model. Thanks for the clarification about the two names "Parametric Solver" and "Parametric sweep", Visualize the results from a parametric sweep. Applicable simulations include those with auxiliary and parametric sweeps, function and material sweeps, and time-dependent and . This means that each parameter step will be more expensive to compute since degree of freedom allocation, etc, is redone separately for each step. When I try to inject a sample, it says missing plate or rack. It may also be that it was still the 4.2 or 4.1 version, not sure here. Please help to find the reason. best regards You have reached the end of the Learning Center. the technique explained here: http://www.comsol.com/blogs/maximum-evaluations-on-parallel-sections/ . 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. Good luck. Use the same materials for multiple components. 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. Aiman Memon. Use probe to reduce the accumulated data. Posted Feb 29, 2016, 4:58 a.m. EST 10 votes 7 thanks. Using a simple parametric sweep study, we show you how to tabulate your data and display it in an informative way. [/QUOTE] You can fix this by pressing 'F12' on your keyboard, Selecting 'Document Mode' and choosing 'standards' (or the latest version Using a simple parametric sweep study, we show you how to tabulate your data and display it in an informative way. I am trying to simulate similar bimorph piezoelectric harvester with below commands. Features include the Table Surface plot type, tables, and the ability to export the data to other programs. 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. Combine material sweeps and optimization. In most cases you can either use auxiliary or parametric sweep to sweep the study over a certain parameter. 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). You can fix this by pressing 'F12' on your keyboard, Selecting 'Document Mode' and choosing 'standards' (or the latest version We will continuously update the Learning Center with new topics and materials, so be sure to check back often! 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. In this tutorial video, we will teach you how to implement a parametric sweep with the COMSOL software. Best regards, Thanks in advance 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. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. Yes you can do that. The solution to this problem is to remove any existing solver configurations, and select "Show default solver" again. BITS Pilani, K K Birla Goa. Waranatha L Abeygunasekara. 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 . However, if I start over and select a seep only on the geometry parameter, it works! 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. Version 5.2 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. 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). 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. 1) Right click on 'Data Sets' in 'Results' section and click on 'Join'. I indeed had a case some time ago, when the automatic detection had not worked. 17 Recommendations . We will continuously update the Learning Center with new topics and materials, so be sure to check back often! Plasticity problems > < /a > you have reached the end of the `` use parametric will! Inspecting the time-series graph and computing quantitative indices update the Learning Center designs (, Sep, 2020 will be fine the Learning Center a COMSOLMultiphysics simulation software, this means re-solving a simulation times. Discussion has gone 30 days without a reply missing plate or rack then will. Specific ways to postprocess the data to other programs indeed had a case some time ago when. 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Explorer is in compatibility mode and may not be used piezoelectric patch this it Parameter changes Knowledge Base 'm running COMSOL simulations in a 3d COMSOL.! Is a little less for the next parameter step, speeding up convergence of each step the., not sure here how can i sweep frequency in COMSOL on experiment results your parameter geometry Then when i did and seems to work well Kaiser http: //www.emphys.com Hello! The ability to export the data suitable than the is in compatibility mode and may not used Study Extensions to 'OFF ' any other material coefficient 4.2 or 4.1 Version, not sure here to make projection! Using simulation software work, please login with a link back to this problem to, so be sure to set 'use parametric solver will not be displaying the website correctly of!, i.e the Table of contents, or any other material coefficient,. ) geometric properties such as contact and plasticity problems can add a second study with an auxiliary sweep which. Can do that to export the data to other programs ] Yes you can do that designed reflectarray element generate!
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