Re: [Yade-users] [Question #662791]: Problems compiling loki from sources
Question #662791 on Yade changed: https://answers.launchpad.net/yade/+question/662791 Status: Open => Solved Victor Eijkhout confirmed that the question is solved: Ok, it seems like I can compile Loki by pretending the last 20 years of C++ development never happened. In other words: compile with std=c++98. -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #663459]: Periodic flow: impose gradP such that Paverage!=0
Question #663459 on Yade changed: https://answers.launchpad.net/yade/+question/663459 Status: Answered => Solved Luc Scholtès confirmed that the question is solved: Thank you guys. I guess I need some time to process this with respect to what I want to achieve. Just a final comment: If I can simulate separately: 1) an increase of pressure P in the cell (homogenized pressurization of the medium) 2) an increase of pressure gradient gradP along one direction of the cell (flow along a given direction) and if, by combining the "commands" defining 1) and 2) I happen to obtain a result that seems to make sense in terms of overall response (i.e. cumulative effect of 1) and 2) in effective stress and associated deformation), would that be mechanically/physically correct of is it just wrong because "a problem that would depend both on pressure gradient and pressure average could not be simulated using periodic boundaries"? Cheers Luc -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #663532]: insert flowengine as a partial/global engine??
Question #663532 on Yade changed: https://answers.launchpad.net/yade/+question/663532 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, Q1) It could probably have been a global engine. It is inconsequential to, besides the fact that it made it tempting for you to play with ids. Q2) If you check an example script you'll see that the list of ids is never defined, it will automatically get all spheres in that case. Bruno -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #663459]: Periodic flow: impose gradP such that Paverage!=0
Question #663459 on Yade changed: https://answers.launchpad.net/yade/+question/663459 Bruno Chareyre proposed the following answer: > "a problem that would depend both on pressure gradient and pressure average could not be simulated using periodic boundaries, since such a problem would not show a periodic pattern from one cell (or window) to another." That's absolutely correct. > "-P -- 0 -- +P / -P -- 0 -- +P / -P -- 0 -- +P" The pressure drop per period (i.e. the macroscopic pressure gradient gradP) can be calculated by taking any two points separated by a distance k*L, with L the period length. E.g. starting from the first point in your sequence and going forward by L: > "-P -- 0 -- +P / -P" gradP = -P - (-P) / L = 0 More generally a periodic flow problem necessarily leads to P(x)=a*x + p(x), where a is the macroscopic gradient and p(x) is a periodic fluctuation, so that grap(P)=dP/dx=a+dp/dx is a truly periodic function (and velocity as well since v=-k(grad(P)). Cheers Bruno -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #663441]: some modules fail to be loaded when i call a class from a python file
Question #663441 on Yade changed: https://answers.launchpad.net/yade/+question/663441 Description changed to: Good evening, I have the following problem I have a python script that calls yade functions from another file. When the other file just has the functions defined as functions (def etc) everything runs correctly When i wrap the functions in a class i can run the yade engine and some packings, but for example pred = inGtsSurface(s) this line cases the error message NameError: global name 'inGtsSurface' is not defined And some more seemingly random functionalities fail. Any ideas/tests you want me to run Will be more than welcome Thanks! John -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #663500]: densest packing possible
Question #663500 on Yade changed: https://answers.launchpad.net/yade/+question/663500 Status: Answered => Solved george confirmed that the question is solved: Thank you!! Amazing community -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #663459]: Periodic flow: impose gradP such that Paverage!=0
Question #663459 on Yade changed: https://answers.launchpad.net/yade/+question/663459 Status: Open => Answered Jérôme Duriez proposed the following answer: >From my understanding, I would more consider the pressure field along the infinite problem being something like -infinity -- -infinity + gradP*L -- -infinity + gradP*2L / -infinity + gradP*2L -- -infinity + gradP*3L -- -infinity + gradP*4L / . / -gradP*L -- 0 -- +gradP*L / / infinity -gradP*2L -- infinity - gradP*L -- infinity (from the "left" of the infinite problem, to the "right"...) In your examples #2 or #3 I think you describe pressure discontinuity, with the different values across the cell edges (the "/"). Which is maybe not the way to go ?.. -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
