Hi Mostapha! Would you update the video for more courses about butterfly? The current videos are great but not enough to completely understand the functions of this plugin Butterfly.
at minute 10:58 I cant preview my visualize mesh. I did see you have it connected to the "butterfly create case from tunnel" component into the "mesh params" but i don't have that section. any clues as to why the definition changed? the more I continue the video the more the definiton changed, is there another updated tutorial? sorry new to butterfly so I cant really know why it changed and what to connect to.
Hello Mostafa, I don't know if you still read the comments for this video. 😅 My question is, can Butterfly simulate the polluted air movement from a chimney? I want to know the effect of the polluted air from a special fixed source. Not the natural air-flow.
Hello Mostapha, thanks a lot for your quite useful tutorials! Regarding outdoor simulations, I've been wondering if there is a way to make the simulation more in a 3d way, like you showed in the example below answering to Alex. What I mean is all the vectors here are being calculated in the same "2d surface" which is cool for flat areas, but I was hoping to use your method with landscape as well. Thank you in advance anyway!
Hi, the video is very good! Great work. But, how can I change the grid where I run the simulation? Because now I have two holes where before there were the solids.
Hi Enrico. The simulation runs for the whole domain. The grid/points are probes to report the values which can be any custom point. You can change them by changing the points that are connected to probes component. Also see the example that I shared in answer to Alex. You can also sample the case afterwards.
@@MostaphaSadeghipour Hello Mostapha great video. I am watching this along time after it was being discussed gut everything working and results but I had this same problem: Dont know how to regenerate the TestMesh. I thought it would automatically detect the new boundary from a new model but it didn't and it keeps showing the empty boundary from the example geometry. I dont know what you mean by 'changing the points that are connected to probes component'. I can see the probe component but I dont see what points I can change. Thank you very much
Hi, Mostapha thanks for your tutorial, really helpful. Just curious that the geometry for this tutorial is prepared in stl.. If I want to add additional buildings into the geometry, must I convert it into stl. as well, or, I can simplily build more buildings through Rhino? I tried to add more buildings, but snappyhexmesh only recognized the initial two buildings.
Hi Weiguo, You can simply build them in Rhino. If you couldn't figure out how to do that then open a discussion on the Grasshopper forum and attach the definition.
Hi Mostapha ! Great work again but this time I'm having a problem... I have followed the openfoam tutorial installation and it looked exactly on my screen the same as on yours.. but now when I run "Blockmesh" I get the following error : "1. Solution exception:Failed to find container id. Do you have the OpenFOAM container running? You can initiate OpenFOAM container by running start_OF.bat: C:\Program Files (x86)\ESI\OpenFoam\1612\\Windows\Scripts\start_OF.bat" I have clicked before OpenFOAM_Start from my desktop and I can check its running properly.. I browsed my openFoam folder and I have a folder 1706 but no 1612 folder. So do I have a version problem here ? Any help would be much appreciated.
Hi Hugo, Your assumption is correct. See this link: github.com/ladybug-tools/butterfly/issues/250 I will be on vacation until 8/19. Meanwhile use the older version and I will get it fixed once I'm back.
hi mostapha, may i ask how long did you take to solve this case? I have run for almost 4 hours and it has only done 255 iterations. I didn't change anything of the example file. And my cpu is i7-7th gen and my pc has a solid disk. I use rhino 6.11 and blueCFD and the latest butterfly plugin for GH. Thanks so much!!
thanks for the video sir, I was wondering, after i run the solution all 600 times how can i go back and access the data visualized in rhino? i need that data to create a presentation. do i have to re run the solution again to screenshot the graphics or is there an easier way to do this?
You don't need to re-run the analysis. You can simply sample the case. Here is an example: hydrashare.github.io/hydra/viewer?owner=mostaphaRoudsari&fork=hydra_1&id=sample_case&slide=0&scale=1&offset=0,0
Hey Mostapha! Could you share any suggestions why this error may occur while trying to sample the case? i.imgur.com/cwvEJSo.jpg Thanks a lot for your help!
When I run the solution with the new airflow file, for grading it keep saying the invalid solution 0.8333. Also what do I need to put for the Brep at genTestPts?
im sorry but i have a question, so the simulation seems runnin pretty fine no red boxes anywhere and the result after simulation is there (the numbers one). But the vector and windflow just shown grey boxes and bunch of grid nothin else. What causes this if i may ask? and the result is always -10000 *sorry for my bad english
Hi Mostapha, I need to simulate an hair flow for natural ventilation. When I open the example of outdoor airflow most of the things are red. I only succeed to set multiple brep, after I'm lost ... I don't understand how to set boudary walls and everything else following that step ... I really need this wind analysis, is it possible to ask for your help ? Like sending you my folder ? You can tell I desperate, I know no one you could help me exept you. It's the only tutorial I found on this topic. The only time I succeed to do this was in class 5 years ago with the help of the teacher. Now I'm lost and I don't have the course anymore ... Please I need your help :) I'm can pay you I needed ;)
I solved by scaling the vectors. So I tried to implement my own 3D model, and i encountered an error. It says :"1. Solution exception: --> snappyHexMesh Failed! --> FOAM FATAL ERROR: Point (15.72323 63.68281 10.59472) is not inside the mesh or on a face or edge. Bounding box of the mesh:(-241 2.334047e+07 0) (69 2.334114e+07 103.5) From function static Foam::labelList Foam::refinementParameters::findCells(bool, const Foam::polyMesh&, const pointField&) in file snappyHexMeshDriver/refinementParameters/refinementParameters.C at line 206. FOAM exiting" I'm not sure what point it is talking about, any idea?
Hi Mostapha! Where can I download examples file in grasshopper(outdoor airflow modelling)? Is it possible to put a geolocation like in LadyBug and does the final wind data depend on the geolocation?
Thanks for the video, but I have a problem at 8:50. I have followed the openfoam tutorial installation and it looked exactly on my screen the same as on yours.. but now when I run "Blockmesh" I get the following error : Butterfly failed to OpenFOAM command! --> FOAM IOWarning : Found [v1012] 'convertToMeters' entry instead of 'scale' in dictionary "/home/ofuser/workingDir/butterfly/outdoor_airflow/system/blockMeshDict" , and this keyword is deemed to be 108 months old. I can not solve this problem...
@Mostapha Sadeghipour Roudsari Hi, I am trying to run this script and I am being caught up on the initial steps, for my meshing_params it is giving me an error saying "simpleGrading' object has no attribute 'x'" though no matter what I plug into the _xgrading, the red won't go away, do you have any solutions to this?
@@jessicazhong7973 I pulled up the python script for that command and had it bypass x in general, which allowed it to create my wind tunnel, but in the end I think my open foam was messed up because I could never get the analysis to run
@Austin Gawrys Ah~~ Thank you so much. Can I ask how did you pull up the python script? Sorry im really new in terms of using grasshopper. Thanks so much with your help.
@@jessicazhong7973 no problem, but same I just started learning it back in August, but if you double click on the middle of the component it should pop up a script, and than at the bottom there will be a section that is red, I think my professor just deleted that part and it end up working for me
Hi guys ! anybody have tried urban analysis with butterfly ? a surface around 1km X 1km. is it too big ? ( I'm looking for something else then flow design..)
Hi Mostapha! Would you update the video for more courses about butterfly? The current videos are great but not enough to completely understand the functions of this plugin Butterfly.
Hi Mostapha!
I have some problem with the BLOCKMESH. After your passages it is still red! How can I solve that problem?!
Thanks
Great video and explanation. Hey Mostapha, can we check age of air and air change effectiveness?
Your videos are just amazing!!!!
at minute 10:58 I cant preview my visualize mesh. I did see you have it connected to the "butterfly create case from tunnel" component into the "mesh params" but i don't have that section. any clues as to why the definition changed? the more I continue the video the more the definiton changed, is there another updated tutorial? sorry new to butterfly so I cant really know why it changed and what to connect to.
Hi mostapha!
Is possible make pressure values in building facade just for representative like radiation analysis examples? Thanks
Hello Mostafa,
I don't know if you still read the comments for this video. 😅
My question is, can Butterfly simulate the polluted air movement from a chimney?
I want to know the effect of the polluted air from a special fixed source.
Not the natural air-flow.
Hi Mostapha, Thanks for your explanation! I would like to ask how to change te units of the solution ,from airpress Pa to windspeed m/s?
can u put the example file here !!. and thanks for ur amazing tutorial
Hello Mostapha, thanks a lot for your quite useful tutorials!
Regarding outdoor simulations, I've been wondering if there is a way to make the simulation more in a 3d way, like you showed in the example below answering to Alex.
What I mean is all the vectors here are being calculated in the same "2d surface" which is cool for flat areas, but I was hoping to use your method with landscape as well.
Thank you in advance anyway!
The solution is calculated for the whole domain (in 3d). We're visualizing the results in 2d but you can visualize them in 3d if needed.
Thank you for the clarification man!
Hi, the video is very good! Great work. But, how can I change the grid where I run the simulation? Because now I have two holes where before there were the solids.
Hi Enrico. The simulation runs for the whole domain. The grid/points are probes to report the values which can be any custom point. You can change them by changing the points that are connected to probes component. Also see the example that I shared in answer to Alex. You can also sample the case afterwards.
Thank you so much.
@@MostaphaSadeghipour Hello Mostapha great video. I am watching this along time after it was being discussed gut everything working and results but I had this same problem: Dont know how to regenerate the TestMesh. I thought it would automatically detect the new boundary from a new model but it didn't and it keeps showing the empty boundary from the example geometry. I dont know what you mean by 'changing the points that are connected to probes component'. I can see the probe component but I dont see what points I can change. Thank you very much
Hi Mostapha, Thanks for your explanation! It would really help with my research project. May I ask if this could be use for permeable facade?
We don't have it built-in for butterfly but if it's possible to do in OpenFOAM then you can get it to work for you with some coding.
Mostapha Sadeghipour Roudsari I will try!
Hi. thanks for the video, how can I have a surface and legend for the velocity of wind?
Hi Mostapha! Is there any advanced video except for 03 04 05?
Tried installing it with Open Foam v1712. Can't get it to work. especially on the Block mesh. Can you please make our lives easier?
Hi, Mostapha thanks for your tutorial, really helpful.
Just curious that the geometry for this tutorial is prepared in stl.. If I want to add additional buildings into the geometry, must I convert it into stl. as well, or, I can simplily build more buildings through Rhino? I tried to add more buildings, but snappyhexmesh only recognized the initial two buildings.
Hi Weiguo, You can simply build them in Rhino. If you couldn't figure out how to do that then open a discussion on the Grasshopper forum and attach the definition.
Hi Weiguo, did you manage to solve this problem? I am having the same issue
Hi I have some issue, i already create a new box but how to recognized the another building in snappyhexmesh? Thx
Hi Mostapha ! Great work again but this time I'm having a problem... I have followed the openfoam tutorial installation and it looked exactly on my screen the same as on yours.. but now when I run "Blockmesh" I get the following error :
"1. Solution exception:Failed to find container id. Do you have the OpenFOAM container running? You can initiate OpenFOAM container by running start_OF.bat:
C:\Program Files (x86)\ESI\OpenFoam\1612\\Windows\Scripts\start_OF.bat"
I have clicked before OpenFOAM_Start from my desktop and I can check its running properly..
I browsed my openFoam folder and I have a folder 1706 but no 1612 folder. So do I have a version problem here ? Any help would be much appreciated.
Hi Hugo, Your assumption is correct. See this link: github.com/ladybug-tools/butterfly/issues/250
I will be on vacation until 8/19. Meanwhile use the older version and I will get it fixed once I'm back.
Thx for the confirmation. I just installed the previous version and everything seems to run !
hi mostapha, may i ask how long did you take to solve this case? I have run for almost 4 hours and it has only done 255 iterations. I didn't change anything of the example file. And my cpu is i7-7th gen and my pc has a solid disk. I use rhino 6.11 and blueCFD and the latest butterfly plugin for GH. Thanks so much!!
It has been a long time and I don't remember. You should post these questions on the forum. I rarely check the RUclips comments.
thanks for the video sir, I was wondering, after i run the solution all 600 times how can i go back and access the data visualized in rhino? i need that data to create a presentation. do i have to re run the solution again to screenshot the graphics or is there an easier way to do this?
You don't need to re-run the analysis. You can simply sample the case. Here is an example: hydrashare.github.io/hydra/viewer?owner=mostaphaRoudsari&fork=hydra_1&id=sample_case&slide=0&scale=1&offset=0,0
thank you so much sir.
Hey Mostapha! Could you share any suggestions why this error may occur while trying to sample the case?
i.imgur.com/cwvEJSo.jpg
Thanks a lot for your help!
When I run the solution with the new airflow file, for grading it keep saying the invalid solution 0.8333. Also what do I need to put for the Brep at genTestPts?
im sorry but i have a question, so the simulation seems runnin pretty fine no red boxes anywhere and the result after simulation is there (the numbers one). But the vector and windflow just shown grey boxes and bunch of grid nothin else. What causes this if i may ask? and the result is always -10000
*sorry for my bad english
can I find Butterfly for Rhino6 Mac version???
Hi Mostapha, I need to simulate an hair flow for natural ventilation. When I open the example of outdoor airflow most of the things are red. I only succeed to set multiple brep, after I'm lost ... I don't understand how to set boudary walls and everything else following that step ...
I really need this wind analysis, is it possible to ask for your help ? Like sending you my folder ?
You can tell I desperate, I know no one you could help me exept you. It's the only tutorial I found on this topic.
The only time I succeed to do this was in class 5 years ago with the help of the teacher. Now I'm lost and I don't have the course anymore ...
Please I need your help :)
I'm can pay you I needed ;)
Is there any link with detailed explanation?
Hi Mostapha!! I would like to ask how to run a simulation on a geometry and not brep?
Yes. You can do both mesh or brep.
Hi Mostapha! How can you rotate the wind tunnel?
The wind tunnel will be perpendicular to wind vector. Change the wind vector and it will rotate
@@MostaphaSadeghipour It seems like when I change the vector to NNW, so Y value is negative the Grading shows error 1.44
Hey Mostapha, I tried your tutorial and everything works. Expect, my wind vectors are small and not really visable. How can i change this?
Which is because my values are really small. The thing is i followed your everystep, so I don't see how I can get a different result?
I solved by scaling the vectors. So I tried to implement my own 3D model, and i encountered an error. It says :"1. Solution exception:
--> snappyHexMesh Failed!
--> FOAM FATAL ERROR:
Point (15.72323 63.68281 10.59472) is not inside the mesh or on a face or edge.
Bounding box of the mesh:(-241 2.334047e+07 0) (69 2.334114e+07 103.5)
From function static Foam::labelList Foam::refinementParameters::findCells(bool, const Foam::polyMesh&, const pointField&)
in file snappyHexMeshDriver/refinementParameters/refinementParameters.C at line 206.
FOAM exiting"
I'm not sure what point it is talking about, any idea?
Hi Christoffer, Thank you for opening an issue [github.com/ladybug-tools/butterfly/issues/233]. I will check and reply there.
Hello....I have an problem in initial steps......this shows an error in installing butterfly plugin 🙄
Hi Mostapha!
Where can I download examples file in grasshopper(outdoor airflow modelling)? Is it possible to put a geolocation like in LadyBug and does the final wind data depend on the geolocation?
Thanks for the video, but I have a problem at 8:50. I have followed the openfoam tutorial installation and it looked exactly on my screen the same as on yours.. but now when I run "Blockmesh" I get the following error : Butterfly failed to OpenFOAM command! --> FOAM IOWarning : Found [v1012] 'convertToMeters' entry instead of 'scale' in dictionary "/home/ofuser/workingDir/butterfly/outdoor_airflow/system/blockMeshDict" , and this keyword is deemed to be 108 months old. I can not solve this problem...
Could you solve it ? I have the same 😩
@@franciscotellezbuitrago5302 I think the problem is my CPU doesn't allow the virtualization.. so I am going to buy a new laptop ..😭
@Mostapha Sadeghipour Roudsari
Hi, I am trying to run this script and I am being caught up on the initial steps, for my meshing_params it is giving me an error saying "simpleGrading' object has no attribute 'x'" though no matter what I plug into the _xgrading, the red won't go away, do you have any solutions to this?
Lol im having the exact same problem as you. Do you know any solutions you can fix that error?
@@jessicazhong7973 I pulled up the python script for that command and had it bypass x in general, which allowed it to create my wind tunnel, but in the end I think my open foam was messed up because I could never get the analysis to run
@Austin Gawrys Ah~~ Thank you so much. Can I ask how did you pull up the python script? Sorry im really new in terms of using grasshopper. Thanks so much with your help.
@@jessicazhong7973 no problem, but same I just started learning it back in August, but if you double click on the middle of the component it should pop up a script, and than at the bottom there will be a section that is red, I think my professor just deleted that part and it end up working for me
Its okay hahaha I found it. Really, thank you so much with your help.
the“u”stand for what？
velocity
Hi guys ! anybody have tried urban analysis with butterfly ? a surface around 1km X 1km. is it too big ? ( I'm looking for something else then flow design..)