Grasshopper

algorithmic modeling for Rhino


Tonight is the longest night of the year (in the northern hemisphere of course) and a good excuse to send a loong post to update you about Ladybug + Honeybee + Butterfly and celebrate the loooong night. So here we go!

 

1. Honeybee is brown and not yellow [stupid!]...

As you probably remember Honeybee logo was initially yellow because of my ignorance about Honeybees. With the help of our Honeybee expert, Michalina, now the color is corrected. I promised her to update everyone about this. Below are photos of her working on the honeybee logo and the results of her study.

 

 

If you think I'm exaggerating by calling her a honeybee expert you better watch this video:

Thank you Michalina for the great work! :). I corrected the colors. No yellow anymore. The only yellow arrows represent sun rays and not the honeybee!

 

 

2. Yellow or brown, W[here]TH Honeybee is?

I know. It has been a long time after I posted the initial video and it is not fun at all to wait for a long time. Here is the good news. If you are following the Facebook page you probably now that the Daylighting components are almost ready.

 

Couple of friends from Grasshopper community and RADIANCE community has been helping me with testing/debugging the components. I still think/hope to release the daylighting components at some point in January before Ladybug gets one year old.

 

There have been multiple changes. I finally feel that the current version of Honeybee is simple enough for non-expert users to start running initial studies and flexible enough for advanced users to run advanced studies. I will post a video soon and walk you through different components.

 

I think I still need more time to modify the energy simulation components so they are not going to be part of the next release. Unfortunately, there are so many ways to set up and run a wrong energy simulation and I really don’t want to add one new GIGO app to the world of simulation. We already have enough of that. Moreover I’m still not quite happy with the workflow. Please bear with me for few more months and then we can all celebrate!

 

I recently tested the idea of connecting Grasshopper to OpenStudio by using OpenStudio API successfully. If nothing else, I really want to release the EnergyPlus components so I can concentrate on Grasshopper > OpenStudio development which I personally think is the best approach.

 

 

3. What about wind analysis?

I have been asked multiple times that if Ladybug will have a component for wind study. The short answer is YES! I have been working with EFRI-PULSE project during the last year to develop a free and open source web-based CFD simulation platform for outdoor analysis.

 

We had a very good progress so far and our rockstar Stefan recently presented the results of the work at the American Physical Society’s 66th annual DFD meeting and the results looks pretty convincing in comparison to measured data. Here is an image from the presentation. All the credits go to Stefan Gracik and EFRI-PULSE project.

 

 

The project will go live at some point next year and after that I will release the Butterfly which will let you prepare the model for the CFD simulation and send it to EFRI-PULSE project. I haven’t tried to run the simulations locally yet but I’m considering that as a further development. Here is how the component and the logo looks like right now.

 

 

 

4. Teaching resources

It has been almost 11 months from the first public release of Ladybug. I know that I didn't do a good job in providing enough tutorials/teaching materials and I know that I won’t be able to put something comprehensive together soon.

 

Fortunately, ladybug has been flying in multiple schools during the last year. Several design, engineering and consultant firms are using it and it has been thought in several workshops. As I checked with multiple of you, almost everyone told me that they will be happy to share their teaching materials; hence I started the teaching resources page. Please share your materials on the page. They can be in any format and any language. Thanks in advance!

 

I hope you enjoyed/are enjoying/will enjoy the longest night of the year. Happy Yalda!

 

Cheers,

-Mostapha

 

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Replies to This Discussion

Hi Zita, Not that much really. EFRI-PULSE project never released their code. We are just starting the project again: https://github.com/mostaphaRoudsari/Butterfly

Thank you, it sounds great and looking forward to it very much!

Awesome thanks Mostapha! Still flat out settling into Switzerland but looking to hop back on board sooon!!

This is a very old discussion but since a number of people have asked we eventually have a prototype that's ready for testing. It's pretty unstable in terms of running iterative studies but works fine for setting up the model and meshing. If you're an experienced OpenFOAM user who is willing to test the components please get in touch. If you haven't used OpenFOAM before then wait a couple of more weeks until we have it stable and ready to use by public. Thanks!

Hi mostapha.

Which kinds of CFD modellings are included in this version?

I'm looking for a means of modelling vertical temperature distributions in large atria.
My idea was to cheat, using simple Honeybee tools (vertically dividing the big zone into sub-zones with 'air walls'), but the 'air wall' feature does not seem to allow direct solar radiation and air flow, thus this work-around does not seem to do the job. So it seems I have to go on to CFD modelling.

Can this tool comprehent heat flows - maybe translated into wind speeds due to this flow - or does it only model urban wind flows?

Thanks

- Hamborg

Mostapha, this is fantastic! I had OpenFOAM running in Ubuntu before but it has been some time. now I have a more powerful computer so I installed OpenFOAM for Windows. Both the indoor and outdoor simulations are working, visualized in GH. I am a sailor and hydrofoil designer so ultimately want to get to free surface effect simulations. I would not say I am so experienced because I am starting over with OpenFOAM after a few years break, but I have accomplished simulations using Rhino models before, dual booting Windows and Ubuntu, and have all of it working in Windows 10 now. I'm having trouble opening these results in ParaView. I'm not sure if that means much, so far I get similar errors opening the work I copied from Ubuntu to Windows...

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